35,0(6Original Instructions

FocusMonitor FMW+
LaserDiagnosticsSoftware LDS

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IMPORTANT!
READ CAREFULLY BEFORE USE.
KEEP FOR FUTURE USE.

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Table of contents
1

Basic safety notes

72

Icons and conventions

10

3

About this operating manual

114

System description

12

4.1
4.2
4.3
4.4
4.5

Functional description..............................................................................................................12
Measuring principle..................................................................................................................13
Status display..........................................................................................................................13
Explanation of the product safety labels...................................................................................14
Scope of delivery and accessories...........................................................................................15

5

Transport and storage

15

6Installation and settings on the PC

16

6.1
6.2
7

Mounting
7.1
7.2

7.3
8

9.4

9.5
9.6

4

20

Overview of the connections....................................................................................................20
Power supply...........................................................................................................................21
Ethernet...................................................................................................................................21

Measuring with the LaserDiagnosticsSoftware LDS
9.1
9.2
9.3

17

Conditions at the installation site..............................................................................................17
Installation in the laser system..................................................................................................17
7.2.1
Prepare mounting......................................................................................................17
7.2.2
Possible mounting positions......................................................................................18
7.2.3
Align the device.........................................................................................................18
7.2.4
Mount the device.......................................................................................................19
Removal from the laser system................................................................................................19

Connections
8.1
8.2
8.3

9

Install LaserDiagnosticsSoftware LDS......................................................................................16
Set IP address of PC................................................................................................................16

22

Warning messages...................................................................................................................22
Establish measurement readiness............................................................................................23
Connect/disconnect the device to the LDS..............................................................................24
9.3.1
Switch on the device and connect it to the LDS.........................................................24
9.3.2
Changing the IP address of a connected device........................................................25
9.3.3
Disconnect device from the LDS and turn off.............................................................25
General information about working with the LDS......................................................................26
9.4.1
Enter user-defined device name.................................................................................26
9.4.2
Open „Device control“ menu......................................................................................26
9.4.3
Open a measuring mode...........................................................................................27
9.4.4
Enter parameters and activate...................................................................................28
9.4.5
Saving options...........................................................................................................29
Settings that apply in all measuring modes...............................................................................30
9.5.1
Move axes.................................................................................................................30
9.5.2
Entries for the measuring tip used..............................................................................31
Device control..........................................................................................................................32
9.6.1
Settings.....................................................................................................................32
9.6.2
Advanced..................................................................................................................34

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9.7

Linescan..................................................................................................................................36
9.7.1
Search laser beam automatically................................................................................36
9.7.2
Adjust the measurement track manually.....................................................................37
9.7.3
Start measurement....................................................................................................38
9.7.4
Display measurement results.....................................................................................38
9.8 Single planes............................................................................................................................39
9.8.1
Search laser beam automatically................................................................................39
9.8.2
Adjust the measurement window manually................................................................40
9.8.3
Measure manual caustics with the single plane measurement mode..........................41
9.8.4
Start measurement....................................................................................................43
9.8.5
Display measurement results.....................................................................................43
9.9 Monitor....................................................................................................................................44
9.9.1
Search laser beam automatically................................................................................44
9.9.2
Adjust the measurement window manually................................................................45
9.9.3
Start measurement....................................................................................................46
9.9.4
Display measurement results.....................................................................................46
9.10 Determining the tool center point (TCP)....................................................................................47
9.10.1 Distance from the pinhole to the reference plane........................................................47

10

Troubleshooting

48

10.1 Messages in the LaserDiagnosticsSoftware LDS during measurement.....................................48
10.2 Connection error when using the LDS......................................................................................49
10.3 Other errors..............................................................................................................................50
11

Maintenance and service
11.1
11.2
11.3
11.4
11.5

51

Maintenance intervals...............................................................................................................51
Cleaning...................................................................................................................................51
Check/replace the measuring tip..............................................................................................51
Replace detector......................................................................................................................54
Selection of the measuring tip and the detector........................................................................59

12

Measures for the product disposal

60

13Declaration of conformity

61

14

Technical data

62

15

Dimensions

63

16

Appendix

65

A
B

GNU GPL license notice...........................................................................................................65
Determine the speed of the measuring tip used.......................................................................65

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35,0(6FocusMonitor FMW+PRIMES - the company
PRIMES is a manufacturer of measuring devices used to analyze laser beams. These devices are employed
for the diagnostics of high-power lasers ranging from CO2-, fiber- and solid-state lasers to diode lasers.
A wavelength range from infrared to near UV is covered, offering a wide variety of measuring devices to determine
the following beam parameters:•

Laser power•

Beam dimensions and position of an unfocused beam•

Beam dimensions and position of a focused beam•

Beam quality factor M²

Development, production and calibration of the measuring devices is performed at PRIMES.
This guarantees optimum quality, excellent service, and a short reaction time, providing the basis for us tomeet all of our customers’ requirements quickly and reliably.

PRIMES GmbH
Max-Planck-Str. 264319 Pfungstadt
Deutschland
Tel +49 6157 9878-0
info@primes.dewww.primes.de

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Basic safety notes

Intended use
The device has been designed exclusively for measurements in the beam of high-power lasers.
Use for any other purpose is considered as not intended and is strictly prohibited. Furthermore, intended
use requires that all information, instructions, safety notes and warning messages in this operating manualare observed. The specifications given in chapter x, „Technical Data“, on page y apply. Any given limit values
must be complied with.
If not used as intended, the device or the system in which the device is installed can be damaged or destroyed.
In addition, there is an increased risk to health and life. Only use the device in such a way that there is no riskof injury.
This operating manual is an integral part of the device and must be kept in the immediate vicinity of the placeof use, accessible to personnel at all times.
Every person who is responsible for the installation, start-up or operation of the device must have read andunderstood the operating manual and, in particular, the safety instructions.
If you still have questions after reading this operating manual, please contact PRIMES or your supplier foryour own safety.
Observing applicable safety regulations
Observe the safety-relevant laws, guidelines, standards and regulations in the current editions published by
the state, standardization organizations, professional associations, etc. In particular, observe the regulations
on laser safety and comply with their requirements.

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Laser radiation warning
During the measurement the laser beam is reflected from the rotating measuring tip. This produces scatteredor directed reflection of the laser beam (laser class 4). Depending on the wavelength of the laser, the reflectedbeam is usually invisible.
To avoid injury from the reflected laser beam, no one should be in the hazardous area where the measurement
is taking place. The hazardous area must be defined before operation of the FMW+.
Before switching on the laser, ensure that the measuring tip is not in the measuring range. Wear suitable
gloves and move the measuring tip out of the measuring range if necessary.
During operation of the device, the laser radiation must be fully absorbed after passing through the measurement zone.
The radiation is absorbed within the FocusMonitor FMW+. The power range is limited to 1 000 W.
When working with the device, people in the hazardous area must protect themselves by taking the following
protective measures.

Fig. 1.1:

8

Risk of injury due to scattered or directed reflections of the laser beam

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Necessary safety measures

DANGER
Serious eye or skin injury due to laser radiation
The device measures direct laser radiation, but does not emit any radiation itself. However, during
the measurement the laser beam is reflected at the rotating measuring tip. This produces scatteredor directed reflection of the laser beam (laser class 4). The reflected beam is usually not visible.
X In measurement mode, a safety distance of one meter to the device must be maintained even when
wearing safety goggles and safety clothing.
X Protect yourself from direct and reflected laser radiation while working with the device by taking thefollowing measures:•

Never leave the device unattended when taking measurements.

•

Wear safety goggles adapted to the power, power density, laser wavelength and operating mode of thelaser beam source in use.

•

Wear suitable protective clothing or protective gloves if necessary.

•

If possible, also protect yourself from direct laser radiation and scattered radiation by using separating
protective devices that block or attenuate the radiation.

•

If the device is moved from its aligned position, increased scattered or directed reflection of the laser beamoccurs during measuring operation. Mount the device in such a way that it cannot be moved unintentionally,i.e. by bumping or pulling the cables.

•

Install safety switches or emergency safety mechanisms that allow the laser to be switched off immediately.

•

Use suitable beam guidance and beam absorber elements which do not emit any hazardous substances
when irradiated.

Employing qualified personnel
The device may only be operated by qualified personnel. The qualified personnel must have been instructed in
the installation and operation of the device and must have a basic understanding of working with high-power
lasers, beam guiding systems and focusing units.
Conversions and modifications
The device may not be modified in terms of design or safety without the explicit consent of the manufacturer.
The same applies to unauthorized opening, dismantling and repair. The removal of covers is only permitted
within the scope of the intended use.
Liability disclaimer
Manufacturer and distributor exclude any liability for damages and injuries which are direct or indirect consequencesof using the device not as intended or modifying the device or the associated software withoutauthorization

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Icons and conventions

Warning messages
The following icons and signal words indicate possible residual risks in the form of warnings:

DANGER
Means that death or serious physical injuries will occur if necessary safety precautions are not taken.

WARNING
Means that death or serious physical injuries may occur if necessary safety precautions are not taken.

CAUTION
Means that minor physical injury may occur if necessary safety precautions are not taken.

NOTICE
Means that property damage may occur if necessary safety precautions are not taken.

Product safety labels
The following icons are used on the device itself to indicate imperatives and possible dangers:

Read and understand the operating manual before using the device!

Labeling according to WEEE directive:
The device must not be disposed of with household waste, but in a separate WEEE collection
in an environmentally friendly way.

Hand injuries warning

General warning sign

Do not touch!

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35,0(6Further icons and conventions in this operating manual
Here you will find useful information and helpful tips.

Indicates a single instruction.
If several of these instructions appear one below the other, the order in which they are executed isirrelevant or they represent alternative courses of action.

1.

A numbered list identifies a sequence of instructions that must be executed in the specified order.

2.
...


Indicates the result of an action to explain processes that take place in the background.
Indicates an observation prompt to draw attention to visible feedback from the device or the software.
Observation prompts make it easier to check whether an instruction was executed successfully.
Often they also guide to the next instruction.
Points to a control element that is to be pressed / clicked.

Points to an element described in the text (for example an input field).

3

About this operating manualThis manual describes the installation and operation of the FocusMonitor FMW+ and how to perform measurements with the LaserDiagnosticsSoftware LDS version 3.0 or higher.
In this operating manual, the abbreviations FMW+ and LDS are used.
For measurement operation with a PC, the LDS must be installed on the PC. The LDS included in the delivery.
PRIMES will also be happy to provide you with a current download link.
For this purpose, contact your sales partner or send an e-mail to: support@primes.de
The software description includes a brief introduction on using the device for measurements. For a detailed
description of the software installation, file management and evaluation of the measurement data, pleaserefer to the separate instructions for the LDS.
This operating manual describes the software version valid at the time of printing. Since the LDS is
subject to continuous development, the supplied data medium may have a newer version number.

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4

System description

4.1

Functional description

The FMW+ measures the beam properties of focused laser beams. In addition to the geometric dimensions of the
focused laser beam, the focus position in space, the beam parameter product as well as the beam quality factor
M² are determined.
The laser beam is scanned along the x-axis with a rotating measuring tip. The integrated horizontal carrier isused to move the measuring tip along the y-axis so that the beam properties of the focused laser beam canbe measured in the plane.
The FMW+ does not have its own z-axis. The z-axis of the laser system must therefore be used for caustic
measurements.
The FMW+ can be used to measure both NIR and CO2 beams up to 1,000 W laser power.
The device has an internal absorber that is not actively cooled. The maximum capacity is 90 kJ.
The maximum 8 x 8 mm measurement window can be scanned with a resolution of up to 1 024 x 1 024 pixels.
The FMW+ works with the PRIMES LDS and is equipped with an Ethernet interface for fast and secure dataexchange.
Measuring tip

Status display

y-axisx-axisFig. 4.1:

12Main components FMW+

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4.2

Measuring principle

The FMW+ is an opto-mechanically scanning measuring system.
The laser beam is scanned using a specialized measuring tip. A small pin hole (typical diameter: 25 μm) inthe measuring tip samples a small part of the laser beam. The sampled part of the laser beam is guided onto
a detector element
The detector is selected depending on the wavelength of the laser radiation to be measured. In this way,different laser beam sources and systems can be measured by optimally selecting the measuring tip and theassociated detector.
The high angular velocity of the rotating measuring tip allows the analysis of high power densities.
Due to the dynamics of the analog-to-digital converters used, a very good signal-to-noise ratio is achieved.
Very low intensities as well as high peak intensities are recorded with equal precision.
4.3

Status display

The optical display consists of three LEDs, which use different colors to show different states of the FMW+.

Tab. 4.1:

Color

Device status

Meaning

White

Power

The supply voltage is connected

Yellow

Rotation

The measuring tip is rotating

Red

Measuring

The measuring tip is rotating and the y-axis is moving.
The measurement is in progress.

States of status display

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FocusMonitor FMW+

Explanation of the product safety labels

A potential hazard area for hand injuries is marked with a symbol “Hand injuries warning“ on the device.
Warning of hand injuries due to the rotating measuring tip
The rotating disk with the mounted measuring tip rotates at high speed during measuring operation.
Even after a measurement or after switching off the device, the rotational disc will continue to rotate for acertain period of time.
To avoid hand injury, do not reach into the device aperture when the measuring tip is rotating.
If the rotating measuring tip hits an obstacle, the measuring tip will be damaged. In this case, the device
must be sent in for service. Therefore, no objects may be held in the beam path of the device.
After switching off the rotation or the device, wait for the measuring tip to come to a standstill. Observe the„Rotation“ status display, see chapter 4.3 „Status display“ on page 13).
Roting measuring tip

Fig. 4.2:

Risk of injury due to a rotating measuring tip

Warning of hand injuries in the device openings
Rotating gears and the horizontal carrier are located in the device opening.
Do not reach into the movement range of the carrier.

Fig. 4.3:

14

Risk of injury due to a rotating parts

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Scope of delivery and accessories

The following parts are included in the scope of delivery:
•

FMW+

•

PRIMES power supply•

Power cable•

Patch cable Cat.5e, Cross-Over, 5 m•

Patch cable Cat.5e, 5 m•

PRIMES USB flash drive (PDF of operating manual, software, etc.)•

Operating manual FMW+•

Operating manual LDS

The following accessories are available:•

Transport and storage case•

Measuring tip in a membrane box•

Detectors with box and screwdriver for mounting

5

Transport and storage
NOTICE
Damage/Destruction of the device
The device’s axes and carriers may be damaged if the device is subjected to hard shocks.
X Handle the device carefully when transporting or installing it.

NOTICE
Damage/Destruction of the device
Imbalance of the rotational disc can damage the device.
X Never operate the device without the measuring tip.

Remove measuring tip to avoid contamination
It is recommended to remove the measuring tip from the FMW+ and place it in the supplied membrane box.
X Remove the measuring tip according to chapter 11.3 „Check/replace the measuring tip“ on page 51.

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6

Installation and settings on the PC

6.1

Install LaserDiagnosticsSoftware LDS
The basic version of LDS is included with the device. PRIMES will also be happy to provide you witha link to download the current version. Please contact your sales partner or contact us by email:support@primes.de1.

Please ensure:

System requirements:•

System requirements are met.

•

Intel Pentium Core i3 or better•

You have administrator rights.

•

Windows 10 (64-bit version)

2.

Close all programs on your PC.

•

At least 4 GB RAM; 8 GB RAM recommended

3.

Insert the PRIMES thumb drive into
your PC and open the directory.
In the standard configuration, Windows
automatically opens the removablestorage device.

•

Display resolution: Full HD (1 920 x 1 080) at 100 % scaling•

An Ethernet port for connecting the measuring device

4.

Double-click the LDS_Setup exe file
to start the installation.

5.

Follow the instructions on the screen.

x If no other Iocation is specified, thenthe main program LDS.exe
will be copied to the directory
C:\Programs\Primes\LaserDiagnosticsSoftware.

6.2

Set IP address of PC
The PC must be in the same IP address range as the PRIMES device.

Choose one of the following options to establish a connection between the PRIMES device and the PC.
The IP address of the PRIMES device can only be changed once this connection has been established(see chapter 9.3.2 „Changing the IP address of a connected device“ on page 25).
Integration of a PRIMES device into a network
Within the PRIMES device, the option DHCP (Dynamic Host Configuration Protocol) is activated by default.
The device obtains its IP address from the DHCP server.
Direct connection of a PRIMES device to a PC
In Windows > Control panel > Network and Sharing Center, assign an IP address to your PC that is in
the same address range as the PRIMES device (e.g. 192.168.116.xyz). The first three number blocks mustbe identical, the last number block can be freely selected. The IP address should be entered by a systemadministrator.
The IP address of your PRIMES device can be found on the identification label.

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7

Mounting

7.1

Conditions at the installation site•

The device must not be operated in a condensing atmosphere.

•

The ambient air must be free of gases and aerosols that interfere with the laser radiation(e.g. organic solvents, cigarette smoke, sulfur hexafluoride).

•

Protect the device from splashes of water and dust.

•

Operate the device in closed rooms only.

7.2

Installation in the laser system

7.2.1

Prepare mounting

Mounting preparation
To prevent damage during transportation, the measuring tip is removed when delivered. It is installed with thecurved side facing the laser beam.
X Mount the measuring tip according to chapter chapter 11.3 „Check/replace the measuring tip“ on page 51.
PinholeFig. 7.1:

Measuring tip

1. Switch off the laser beam.
2. Ensure that moving parts, e.g. robot arms, etc. are at a standstill and that they cannot be set in motion
unintentionally.
3. Check the space available before installing the device, especially the required space for the connection
cables and hoses.

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FocusMonitor FMW+

Possible mounting positions

The FMW+ is designed for vertical beam incidence from above
7.2.3

Align the device
Only use a pilot laser for alignment.

DANGER
Serious eye or skin injury due to laser radiation
If the laser beam hits the stationary measuring tip located in the measurement aperture, scattered or
directed reflection of the laser beam occurs (laser class 4).
X Wear suitable gloves and move the measuring tip out of the measurement aperture.

CAUTION
Risk of injury caused by rotating or moving parts
The hand or fingers can be crushed in the travel range of the horizontal and vertical carrier.
There is a risk of injury due to the rotating measuring tip.
X Do not reach into the device openings.
X Do not reach into the measuring range of the device or hold objects into it.
X Only align the device while the measuring tip is stationary.

For the FMW+, a vertical beam incidence is requiredwith respect to the x-y plane.
1.

Position the device in the x and y directions so thatthe pilot laser beam hits the geometric center ofthe semicircle in the entrance opening.

2.

Move the system to the lower measuring positionof the z-axis.

18

Position of the laser beam

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7.2.4

Mount the device

DANGER
Serious eye or skin injury due to laser radiation
If the device is moved from its aligned position, increased scattered or directed reflection of thelaser beam occurs during measuring operation (laser class 4).
X Mount the device so that it cannot be moved by an unintentional contact or cables being pulled
accidentally.
There are three M5 threaded holes on the bottom of the housing for fastening.
Fasten the device with 3 screws. The total length of the screws depends on the dimensions of the customer’s
support bracket.
M5

M5

11
125
10,5

60,5

51

51

23

M5
Fig. 7.2:

7.3

Mounting threads on the bottom of the FMW+

Removal from the laser system

1. Switch off the laser beam.
2. Ensure that moving parts, e.g. robot arms, etc. are at a standstill and that they cannot be set in motion
unintentionally.
3. Switch off the device.
4. Disconnect all connections.
5. Unscrew the fastening screws.
6. Remove the device from the laser system.

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35,0(68Connections

8.1

Overview of the connections

FocusMonitor FMW+

Establish all electrical connections and switch on the device before starting the LDS.

Ethernet

On/Off switch
Power supply
connection

Fig. 8.1:

20

FMW+ connections

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8.2

Power supply

The device requires a voltage supply of +24 V ± 5 % (DC) for operation.
A suitable power supply is included in the scope of delivery.
Only use the provided PRIMES power supply and connection lines.

8.3

Ethernet

Data between the FMW+ and PC is transmitted via Ethernet. Connect the FM+ to the PC via a crossovercable or to the network via a patch cable.
.

PC

LAN
or
Crossover cable

Patch cable

PRIMES PowersupplyFig. 8.2:

Connect the FMW+

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Measuring with the LaserDiagnosticsSoftware LDS

This chapter describes measurements with the LDS. For a detailed description of the software installation,
file management and evaluation of the measured data, please refer to the separate operating manual “LDS”.
9.1

Warning messages

DANGER
Serious eye or skin injury due to laser radiation
Depending on the measuring principle used, the laser beam is reflected at the measuring tip (laser class 4).
The reflected beam is usually not visible.
X Please wear safety goggles adapted to the power, power density, laser wavelength and operating
mode of the laser beam source in use.
X Wear suitable protective clothing and protective gloves.
X Protect yourself from laser radiation by separating protective devices(e.g. by using appropriate shielding).
X During measurements, a safety distance of one meter to the FMW+ must be maintained even when
wearing safety goggles and safety clothing.

DANGER
Serious eye or skin injury due to laser radiation
If the device is moved from its aligned position, increased scattered or directed reflection of the laser
beam can occur during measuring operation (laser class 4).
X Mount the device so that it cannot be moved by an unintentional contact or cables being pulled
accidentally.

CAUTION
Risk of injury caused due to the rotating measuring tip
The measuring tip of the FMW+ rotates at high speed during measurements. Even after the rotationor the device has been turned off, the measuring tip will continue to rotate for a certain period of time.
If the rotating measuring tip hits an obstacle, the device must be sent in for service to readjust themeasuring tip.
X Do not reach into or hold any objects into the beam entrance of the device.
X Wait for the measuring tip to come to a standstill (observe the „Rotation“ status display)

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CAUTION
Risk of injury caused due to the rotating or moving parts
The hand or fingers can be crushed in the device openings by rotating gears and the carrier.
Do not reach into device oppenings
Do not reach into or hold any objects into the beam entrance of the device.

NOTICE
Damage/Destruction of the absorber
An acoustic warning signal is triggered when the temperature of the absorber reaches 60 °C.
In the event of the alarm, switch off the laser immediately and allow the absorber to cool down!

NOTICE
Damage/Destruction of the measuring tip
In case of very high power densities (CO2 > 15 – 30 MW/cm²; NIR > 8 – 10 MW/cm²), plasma
may be ignited on the surface of the measuring tip, which could destroy the measuring tip.
X Increase the speed according to appendix B on page 65 and purge it with inert gas, if necessary.

9.2

Establish measurement readiness1. Check whether the mounted measuring tip and the mounted detector are suitable for your measuringtask, see chapter 11.5 „Selection of the measuring tip and the detector“ on page 59.
2. Determine the required speed of the measuring tip according to appendix B on page 65.

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9.3

Connect/disconnect the device to the LDS

9.3.1

Switch on the device and connect it to the LDS

1.

Switch on the device.

2.

Start the LDS by double-clicking on the program iconin the start menu group or on the desktop icon.

The start screen appears.
3.

Select the operating mode Measure.

If the Show start screen option isdisabled or the window Connections is
closed:X

Click on the Devices tab and then on
the + Connect to device button.

The Connections window appears.
4.

Click on the desired device.

5.

Click on the Connect to device button.

If the device does not appear:
X

Click on the Search the network
button.

If the device still does not appear in theConnections window, see chapter 10.2
„Connection error when using the LDS“on page 49.

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9.3.2

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Changing the IP address of a connected device

Within the device a static IP address is stored and the function Use DHCP is activated. When establishing aconnection, the device will first wait to be assigned a suitable IP address via DHCP. If this prooves unsuccessful,it will revert to the static IP address.
If Use DHCP is disabled, the device will directly use the static IP address. As a result, the connection can beestablished faster.
For a connected device, both the IP address and the activation of DHCP can be changed.
Change the IP address of a device asfollows:
1.

Click on the Devices tab.

2.

Right-click on the device and selectthe Device settings menu point.

3.

Enter the desired IP address in theStatic IP address input field.

4.

Deactivate Use DHCP.

5.

Confirm the entry with OK.

The Confirmation window appears.
6.

In the Confirmation window, placea check mark at Acknowledge andclick OK.

7.

Switch the device off and on again.

9.3.3

Disconnect device from the LDS and turn off

1.

Click on the Devices tab.

2.

Right-click on the device and selectthe Disconnect menu point.

3.

Switch off the device.

4.

If applicable, disconnect the electricalconnections.

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FocusMonitor FMW+

General information about working with the LDS

This chapter contains general information about the LDS, irrespective of the respective measuring task.
Read this general information before turning to the following chapters on the various measurement modes.
9.4.1

Enter user-defined device name

If you want to assign a user-defined device name to a device, proceed as follows:
1.

Click on the Devices tab.

2.

Right-click on the device and selectthe Device settings menu point.

3.

Enter the desired device name in the
Device name input field(max. 18 characters).

4.

In the Device settings window, confirm the entry with OK.

The Confirmation window appears.
5.

Place a check mark at Acknowledge
and click OK.

6.

Switch the device off and on again.

x The device name is displayed in theConnections window.
x After connecting, the device name isdisplayed in the Devices tab.

9.4.2

Open „Device control“ menu

1.

Click on the Devices tab.

2.

Select the device and click on thedevice function Scanner below thedevice name.
The Device control menu with thefollowing sections opens.

•

Measuring modes(see chapter 9.4.3 on page 27)

Measuring modes
Device function

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Open a measuring mode

The desired measuring mode is selected in the Device control menu. The following measuring modes are available:•

Linescan (see chapter 9.7 „Linescan“ on page 36)•

Single planes (see chapter 9.8 „Single planes“ on page 39)•

Monitor (see chapter 9.9 „Monitor“ on page 44)
X

After opening the Device control
menu, click the button of the desired
measuring mode, for example Single
planes.

A drop-down list for changing themeasuring mode appears in the upper area of the Device control menu.
Change measuring mode:
1.

Click on the button to open the dropdown list.

2.

Select measuring mode.
After selecting the measuring mode,the corresponding toolbench is
opened.

If the toolbench has been closed, re-open
it by clicking the Open measurement
toolbench button.

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FocusMonitor FMW+Enter parameters and activate

Be aware when settings are made in one measuring mode, some options are also available in other modes
as well.
For example, if you enter a parameter in the Single planes mode, it will automatically be applied to all othermeasuring modes that use this same parameter.
Transfer an entered parameter value
with the Enter key:
1.

Enter the desired value in the input
field.

Example: blue input field

The background color of the input
field changes to blue.
2.

Confirm the entry by pressing theEnter key.
The field returns to its original background color.

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Saving options

The LDS offers (up to) three different options for saving. They differ by the storage location and the selectionof the data to be saved.
When saving/loading a configuration, note that the command is called in a certain measurement mode, but
the saved/loaded data set also includes the settings of the other measurement modes.
Save data with asterisk (*) to a file /load from a file:All data marked with an asterisk in the
Device control menu can be saved to apreset file with the extension .pre on thePC.
X

To save a configuration, click on the
icon
.

X

To load a configuration click on theicon.

Save data with an asterisk (*) in the
EEPROM of the device:
All options marked with an asterisk in the
Device control menu can be saved in the
EEPROM in the device.
In this case, the settings will be retainedeven if the device is switched off or disconnected from the power supply.
1.

Click on the Advanced tab.

2.

Click on the Save device settings
button.

Save all settings in the LDS:With these buttons you can save or load
all settings of the Device control menu.
The storage is made device-related in thelocal installation of the LDS.
1.

Click on the Settings tab.

2.

Use one of the following options:X

Click the Save current parameters
button to save the settings of theconnected device.

X

Click on the Load last parameters
button to load the last saved settings.

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Settings that apply in all measuring modes

9.5.1

Move axes

FocusMonitor FMW+

In all measuring modes, the measuring tip
can be moved to a defined y-position.
1.

Click in the device control > Advanced.

2.

Click on the arrow to open the dropdown list.

Use one of the following options:
X

Enter a value in the parameter fieldand confirm the entry with the Enterbutton.

X

Use the slider below the input field.

3.

Click on the button
Move to y position.

The Confirmation window appears.
4.

Switch off the laser if necessary.

5.

Check the Acknowledge box andclick OK.

x The measuring tip is moved to theentered y-position.

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Entries for the measuring tip used

For traceability of the measurements performed with a specific measuring tip, the specifications of the measuring
tip used can be entered into the LDS.
The specifications are indicated on the packaging of the measuring tip. Missing entries have no effect on themeasurements performed.
1.

After opening the Device Control
menu, click the Advanced button.

2.

Select the Type of measuring tip usedfrom the drop-down list.

3.

Enter the serial number S/N of themeasuring tip used.

4.

Enter the Sensitivity in cts/(MW/cm²) of the measuring tip used.

5.

Enter the Pinhole diameter in μm ofthe measuring tip used.

6.

Click the Save device parameters
button.

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Device control

9.6.1

Settings

FocusMonitor FMW+

The options listed below in alphabetical order are not available in all measuring modes.
1.

Click on the Settings tab.

2.

Enter the options according to the
explanations in the following table.

X

Data with (*) can be saved, seechapter 9.4.5 „Saving options“ onpage 29.

OptionExplanation# Pixel in x

The number of pixels determines the resolution of the measurement.
Use one of the following options:

autom. Gain

XEnter a value in the input field.

X

Use the slider below the input field.

When using a CO2 detector, this option is not available and will not be
displayed.
If this option is enabled, the gain is set automatically.
X

autom. Measurement window

If this option is enabled, then the measurement window size will be set
automatically.
X

Find beam

Set the check mark to enable the option.

Set the check mark to enable the option.

This option enables an automatic beam search with an automated measuring window size and measurement. The laser beam is automaticallysearched for in the entire measuring range. Measurement window sizeand gain are set automatically.
The measured plane is then displayed in the graphic display.
X

Click on the button to start the beam search.

Note that the determined measurement data will not be saved in the
project tree of the Projects tab.
Gain in dB

When using a CO2 detector, this option is not available and will not be
displayed.
If the autom. Gain option is disabled, the gain can be set manually.
The option can be used to control the sensitivity of the detector.
Use one of the following options:
X

Enter a value in the input field.

X

Use the slider below the input field.

Interval between measurements in s *Enter the pause between the single plane measurements of the timeseries. This is the pause between the end of one measurement and thestart of the next.

Line center in mm

Use one of the following options to adjust the position of the measuring line:

32

X

Enter the x-/y-position of the line center in the corresponding input
fields.

X

Position the mouse pointer within the measurement window.
Then drag while holding down the right mouse button.

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Line width in mm

Use one of the following options to adjust the line width (length) and position:
X

Enter the width (length) of the line.

X

Position the mouse pointer at any point within the measurement
area and drag while holding down the left mouse button. Keep themouse button pressed until the length of the measuring line meets
your requirements.

Load last parameters

X

Click this button to load the last saved device configuration.

Manual z-Position in mm

This option defines the position of the next measurement on the z-axis(see chapter 9.8.3 „Measure manual caustics with the single plane measurement mode“ on page 41).
X

Set the check mark at Deactivate z-axis.

X

Enter the Manual z-position in mm.

Measurement duration in s

X

Enter the duration of the measurement in s.

nominal power P in W *To calculate the power density, the laser power used must be entered.
Otherwise, the measured amplitudes are given directly in counts.
X

Enter the nominal laser power used during measurement.

Number of measurements *X

Enter the desired number of single plane measurements of the timeseries.

Parameter settings

All settings in the Device control menu can be individually saved foreach device. The settings are saved to the local installation of the LDS.
This and other options for saving/loading configurations are described inchapter 9.4.5 „Saving options“ on page 29.

Position in mm

Use one of the following options to adjust the position of the measurement
window:
X

Enter the x-/y-position in the corresponding input fields.

X

Position the mouse pointer within the measurement window.
Then drag while holding down the right mouse button.

Reset measurement window

X

Click this button to maximize the measurement window and simultaneously center it in the measurement range.

Save current parameters

X

Click this button to save all current settings of the connected device.

Time series

A time series consists of several single plane measurements with thesame settings.

Window size in mm

If the autom. Measurement window option is disabled, the size of themeasurement window can be set manually. Use one of the following
options:

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X

Enter the length and width in the corresponding input fields.

X

Position the mouse pointer anywhere within the measurement
range and drag while holding down the left mouse button. Keep themouse button pressed until the measurement window meets yourrequirements.

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FocusMonitor FMW+

Advanced

The options listed below in alphabetical order are not available in all measuring modes.
1.

Click on the Advanced tab.

2.

Enter the options according to the
explanations in the following table.

X

Data with (*) can be saved, seechapter 9.4.5 „Saving options“ onpage 29.

OptionExplanation# Pixel in x/y *The number of pixels determines the resolution of the measurement.
Enter the resolution in x-/y-direction in the corresponding input fields.

Arithmetic Average *The default algorithm for averaging the plane measurements is Arithmetic
Average. Averaging over several measurements can be useful, for example,
when measuring a laser with significant power fluctuations.
X

Select an algorithm from the drop-down list:•

Arithmetic Average: The measured values for each pixel are added
together and divided by the number of planes.

•

Max. intensity per pixel: The values from all the measurements arecompared for each pixel and only the maximum value for each one isdisplayed.

•

Max. Lines: The values from all the measurements are comparedfor each line (meaning the line measured by the device in x-direction)and only the maximum value for each one is displayed.

Calibrated wavelength(s) in nm *The “calibrated wavelength” is the wavelength at which the device has
been validated. This is stored in the device and is displayed in the LDS.

Focal length of focusing optics in mm *If several planes of a caustic have been measured, the caustic fit and theentered focal length are used to calculate the raw beam diameter on thefocusing optics.
X

Measuring tip

Enter the focal length used by the focusing optics of the laser system.

Documentation of the measuring tip used
With these options, the specifications of the measuring tip used can beentered into the LDS for documentation of the measurements performed.
This option is described in chapter 9.5.2 „Entries for the measuring tip used“
on page 31.

Move axes

With this option, the horizontal carriers can be moved in a defined manner. There are 2 options to choose from:X

Enter a value in the input field.

X

Use the slider below the input field.

This option is described in chapter 9.5.2 „Move axes“ on page 39.
nominal Power P in W *To calculate the power density, the laser power used must be entered.
Otherwise, the measured amplitudes are given directly in counts.
X

Number of averaged planes *Number of planes *34

Enter the nominal laser power used during measurement.

With the default setting of 1 in the input field, no averaging takes place.
X

Enter the number of plane measurements >1 for averaging

X

The predefiend number of planes is 21.

X

Enter the desired number of single plane measurements of the timeseries.

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OptionExplanation

Rotational speed in rpm *The required speed of the measuring tip used must be determined according
to appendix B on page 65.
X

Save device settings

Select the speed of the measuring tip from the drop-down list.

All options marked with an asterisk in the Device control menu can besaved in the EEPROM of the device.
These and other options for saving/loading configurations are describedin chapter 9.4.5 „Saving options“ on page 29.

Used wavelength in nm *To calculate the beam quality factor M², the used wavelength must beentered. Depending on the display in the option Calibrated wavelength(s)in nm, the used wavelength can be entered in a defined range.
For example, with a „calibrated wavelength“ of 1 064 nm, the used wavelength can be entered from 1 000 - 1 100 nm.
Use one of the following options to set the wavelength of the laser used:

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X

Enter a value in the input field.

X

Use the slider below the input field.

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FocusMonitor FMW+

LinescanIn measuring mode Linescan, the laser beam is measured at a defined position on the y-axis over a specificperiod of time. The line width, line center and position on the y-axis are freely adjustable.
The measuring tip of the FM+ is moved to a fixed y-position. At this position, it measures the power density
on a single measuring path with every rotation of the measurement tip.
The measurement is carried out over a defined period of time or until it is manually aborted.
9.7.1

Search laser beam automatically1.

Observe the warning messages inchapter 9.1 „Warning messages“ onpage 22.

2.

Click on the Settings tab.

3.

Switch on the laser.

4.

Click on the Find beam button.

x The laser beam is automaticallysearched for in the entire measuring
range. The measurement window andgain are set automatically.
If the search is successful, the laser
beam is displayed in the graphic
representation.
If the beam is not displayed:
X

Check for correct alignment of thedevice on the x-y plane according tochapter 7.2.3 „Align the device“ onpage 18.

X

Check the direction of the beam
entrance.

X

Adjust the gain.

X

Choose a different z-position.

X

Increase the laser power (step by step).

5.

If necessary, adjust the measurement
track manually according to the following.
chapter 9.7.2 „Adjust the measurement track manually“ on page 37 .

6.

Start the measurement according tochapter 9.7.3 „Start measurement“
on page 38.

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Adjust the measurement track manually

In a window in the upper area of theSettings tab, the measurement plane isdisplayed graphically:•

the entire measurable area (thin lines)•

the measurement track to be recorded(thick lines)•

the measuring position on the z-axis•

after performing a beam find and during
the measurements, a false color view of
the recorded area

Measuring range(thin line)

Measurement track(thick line)
Create a measurement track:
X

Position the mouse pointer anywhere
within the measurement range.
Drag while holding down the left
mouse button.
Keep the mouse button pressed until
the measurement track meets yourrequirements.

Adjust the position:
X

Enter the x-/y-position of the trackcenter in the corresponding input
fields.

X

Position the mouse pointer over themeasurement track.
Drag while holding down the rightmouse button.

With a laser beam displayed:X

To zoom to the center of the graphic
representation, first move the mousepointer over the graphic representation
until the plus/minus buttons appear.
Then press the buttons.

X

To zoom in on the position of themouse pointer, position the mousepointer anywhere within the graphic
representation.
Then turn the mouse wheel.

X

To zoom to the size of the measuring
range. Position the mouse pointerwithin the measuring range.
Then double-click left.

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FocusMonitor FMW+

Start measurement

1.

Observe the warning messages inchapter 9.1 „Warning messages“ onpage 22.

2.

Click the Start button.

3.

Switch on the laser.

x The measurement begins.
Optional:
X

Click the Stop button to abort themeasurement.

X

Click the Stop Rotation button tostop the rotation of the measuring tip.
During the measurement, the progress is shown in the following indicators:

Measurement:
While the indicator is rotating, the measurement is performed.
Measurement completed:
After successful measurement, the indicator lights up green.
4.

9.7.4

Switch off the laser after the measurement is completed, unless you wantto perform further measurements.

Display measurement results

The measurement results are displayedin the opened tool during and after thecompleted measurement.
X

PRIMES recommends checking thequality of the results after a measurement.
Depending on the results, it may
seem necessary to repeat the measurement with improved measurement setup or changed parameters.

X

38

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management and evaluation of themeasured data, please refer to theseparate operating manual LDS.

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Single planes

In single planes measuring mode, single planes are measured at selected z-positions.
Measurement window size and the gain can be set automatically or determined manualy.
You can also have the software search for the laser beam automatically in the entire measurement range.
To measure a manual caustic, several planes can be measured — either individually or by means of a serial
measurement.
An increment along the z-axis can be configured for this, see chapter 9.8.3 „Measure manual caustics withthe single plane measurement mode“ on page 41.
The FMW+ does not have its own z-axis. The z-axis of the laser system must therefore be used for caustic
measurements.
9.8.1

Search laser beam automatically1.

Observe the warning messages inchapter 9.1 „Warning messages“ onpage 22.

2.

Click on the Settings tab.

3.

Switch on the laser.

4.

Click on the Find beam button.

x The laser beam is automaticallysearched for in the entire measuring
range. The measurement window andgain are set automatically.
If the search is successful, the laser
beam is displayed in the graphic
representation.
If the beam is not displayed:
X

Check the correct alignment of thedevice on the x-y plane again according to chapter 7.2.3 „Align the device“
on page 18.

X

Check the direction of the beam
entrance.

X

Adjust the gain.

X

Choose a different z-position.

X

Increase the laser power (in small
increments).

5.

If necessary, adjust the measurement
window manually according to thefollowing. chapter 9.8.2 „Adjust themeasurement window manually“ onpage 40 an.

6.

Start the measurement according tochapter 9.8.4 „Start measurement“
on page 43.

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FocusMonitor FMW+

Adjust the measurement window manually

In a window in the upper area of theSettings tab, the measurement plane isdisplayed graphically:•

the entire measurable area (thin lines)•

the measurement window to berecorded (thick lines)•

the measuring position on the z-axis•

after performing a beam find and during the measurements, a false color
view of the recorded area

Measuring range(thin line)

Make sure that the autom. measurement
window option is not activated. Otherwise, the manual setting may be overwritten when starting a measurement.

Measurement window(thick line)

Create a measurement window:
X

Position the mouse pointer anywhere
within the measurement range. Drag
while holding down the left mousebutton. Keep the mouse buttonpressed until the measurement window meets your requirements.

Adjust the position:
X

Enter the x-/y-position in the corresponding input fields.

X

Position the mouse pointer anywhere
within the measurement window.
Drag while holding down the rightmouse button.

With a laser beam displayed:X

To zoom to the center of the graphic
representation, first move the mousepointer over the graphic representation until the plus/minus buttons appear. Then press the buttons.

X

To zoom in on the position of themouse pointer, position the mousepointer anywhere within the graphic
representation.
Then turn the mouse wheel.

X

To zoom to the size of the measuring
range. Position the mouse pointerwithin the measuring range.
Then double-click left.

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Measure manual caustics with the single plane measurement mode

In single planes measurement mode, further measurements can be performed at any z-positions.
With this procedure, a caustic can be measured manually.
The FMW+ does not have its own z-axis. The z-axis of the laser system must therefore be used for caustic
measurements.
For stigmatic and single astigmatic beams, at least 10 different positions on the z-axis must be measured
according to ISO 11146-1. About half of the measurements must be distributed within one Rayleigh length on
both sides of the beam waist and about half must be distributed beyond two Rayleigh lengths starting fromthe beam waist.
An odd number of measurement planes makes it more likely that one of the measurement planes will be ator close to the focal plane. PRIMES recommends measuring at least 21 planes within ± 3 Rayleigh lengths
around the focus.
For generally astigmatic and unknown beams, ISO 11146-2 requires measurements to be made at a minimumof 20 uniformly distributed points on the z-axis within a range of at least three times the Rayleigh length bothbehind and in front of the beam waist.
PRIMES recommends measuring at least 21 planes within ± 3 Rayleigh lengths around the focus. An odd
number of measurement planes makes it more likely that one of the measurement planes will be at or close
to the focal plane will be measured.
Single measurement with manual input of the z-position:
This procedure is used when the laser system moves tothe position of the next measurement.
1.

Click on the Settings tab.

2.

In the z-position in mm field, enter the desired positionof the next plane to be measured.

3.

Start and stop the measurement according tochapter 9.8.4 „Start measurement“ on page 43.

Single measurements using z-increment spacing:
1.

Click on the Settings tab.

2.

Enter the spacing for the further measurements in thez-Increment in mm field.

3.

Start the measurement according to chapter 9.8.4„Start measurement“ on page 43 and wait until themeasurement is completed.

x The measured plane is one z‑increment away fromthe previously measured plane.
4.

Move the laser or device according to the entered value.

5.

Start a measurement again and wait until the measurement is finished.

6.

Repeat the last 2 step as often as you like.

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Series measurement using z-increment spacing:
The combination of the Time series and z‑Increment in
mm options enables measuring a free caustic in one run.
1.

Click on the Settings tab.

2.

Enter the spacing for the planes to be measured in
the z-Increment in mm field.

3.

In the Number of measurements and Interval
between measurements in s input fields, enter thenumber of measurements and the interval. The intervalis the time between the end of one measurement andthe start of the next.

4.

Make sure that the laser or device moves within thevalue entered in the Interval between measurements in s input field according to the value enteredin the z-step size input field.

5.

Start the series measurement according tochapter 9.8.4 „Start measurement“ on page 43
and wait until the measurement is finished.

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Start measurement

1.

Observe the warning messages inchapter 9.1 „Warning messages“ onpage 22.

2.

Click the Start button.

3.

Switch on the laser.

x The measurement begins.
Optional:
X

Click the Stop button to abort themeasurement.

X

Click the Stop Rotation button tostop the rotation of the measuring tip.
During the measurement, the progressis shown in the following indicators:

Measurement:
While the indicator is rotating, the measurement is performed.
Measurement completed:
After successful measurement, the indicatorlights up green.
Averaging (if enabled):
The indication shows the measured planes
that are used to average a measured value.
4.

9.8.5

Switch off the laser after the measurement is completed, unless you wantto perform further measurements.

Display measurement results

The measurement results are displayedin the opened tool during and after thecompleted measurement.
X

PRIMES recommens checking thequality of the results after a measurement.
Depending on the results, it may benecessary to repeat the measurementwith improved measurement setup orchanged parameters.

X

For a detailed description of the file
management and evaluation of themeasured data, please refer to theseparate operating manual LDS.

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MonitorIn Monitor measuring mode, measuring planes are continuously viewed in a false-color image. The laser
beam can be automatically searched by the software in the entire measurement range.
After a successful search the measurement will be run as long as desired. During the measurement, data is
continuously read out and displayed in the graphical view. Measurement data are not saved in the projecttree of the Projects tab.
9.9.1

Search laser beam automatically1.

Observe the warning messages inchapter 9.1 „Warning messages“ onpage 22.

2.

Click on the Settings tab.

3.

Switch on the laser.

4.

Click on the Find beam button.

x The laser beam is automaticallysearched for in the entire measuring
range. The measurement window andgain are set automatically.
If the search is successful, the laser
beam is displayed in the graphic
representation.
If the beam is not displayed:
X

Verify the correct alignment of thedevice on the x-y plane according tochapter 7.2.3 „Align the device“ onpage 18.

X

Check the direction of the beam
entrance.

X

Adjust the gain.

X

Choose a different z-position.

X

Increase the laser power (in small
increments).

5.

If necessary, adjust the measurement
window manually according to thefollowing. chapter 9.9.2 „Adjust themeasurement window manually“ onpage 45 an.

6.

Start the measurement according tochapter 9.9.3 „Start measurement“
on page 46.

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Adjust the measurement window manually

In a window in the upper area of theSettings tab, the measurement plane isdisplayed graphically:•

the entire measurable area (thin lines)•

the measurement window to berecorded (thick lines)•

the measuring position on the z-axis•

after performing a beam find and during
the measurements, a false color view of
the recorded area

Measuring range(thin line)

Measurement window(thick line)

Create a measurement window:
X

Position the mouse pointer anywhere
within the measurement range. Drag
while holding down the left mousebutton. Keep the mouse buttonpressed until the measurement window
meets your requirements.

Adjust the position:
X

Enter the x-/y-position in the corresponding input fields.

X

Position the mouse pointer over themeasurement track. Drag while holding
down the right mouse button.

With a laser beam displayed:X

To zoom to the center of the graphic
representation, first move the mousepointer over the graphic representation
until the plus/minus buttons appear.
Then press the buttons.

X

To zoom in on the position of themouse pointer, position the mousepointer anywhere within the graphic
representation.
Then turn the mouse wheel.

X

To zoom to the size of the measuring
range. Position the mouse pointerwithin the measuring range.
Then double-click left.

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FocusMonitor FMW+

Start measurement

DANGER
Serious injury to the eyes or skin due to laser radiation
If you use a continuous plane measurement to align the device in Monitor measurement mode,
note the following:
X Align the device preferably with a pilot laser that cannot cause dangerous reflections.
X Aligning the device with a class 4 laser can result in dangerous reflections. In this case, the alignment
must be remotely controlled behind a separating protective device. The protective device must block
the radiation or reduce it to a non-hazardous level.
1.

Follow the warning messages inchapter 9.1 „Warning messages“ onpage 22.

2.

Click the Start button.

3.

Switch on the laser.

x The measurement begins.
Optional:
X

Click the Stop button to abort themeasurement.

X

Click the Stop Rotation button tostop the rotation of the measuring tip.
During the measurement, the progressis shown in the following indicators:

Measurement:
While the indicator is rotating, the measurement is performed.
4.

9.9.4

Switch off the laser after the measurement is completed, unless you wantto perform further measurements.

Display measurement results

During the measurement, measurement
data is continuously read out and displayedin the graphical view.
The determined measurement data are notsaved in the project tree of the Projects tab.
X

46

For a detailed description of the file
management and evaluation of themeasured data, please refer to theseparate operating manual LDS.

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9.10

Determining the tool center point (TCP)The tool center point (TCP) is usually located on the beam axis on the focus plane.
1.

Set up the FMW+ as described inchapter 7.2.3 „Align the device“ onpage 18.

2.

Install the FMW+ as described inchapter 7.2.4 „Mount the device“ onpage 19.

Beam axis

3.

Determine the focus position with the
FMW+.

4.

Measure the distance between thereference plane and the reference
plane of the laser processing head.

The distance in the z-direction from thepinhole to the reference point on the topedge of the device is indicated on thedevice as an offset of 10.6 mm.

Laserprocessing headyx

x-axisy-axis

TCP coordinate system

9.10.1z

Device coordinate system

Distance from the pinhole to the reference plane

10,6 mm offset

Reference plane at the plus sign ofthe y-axis

PinholeFig. 9.1:

Distance from the pinhole to the reference plane

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Troubleshooting

10.1

Messages in the LaserDiagnosticsSoftware LDS during measurement

FocusMonitor FMW+

If problems occur during a measurement, the LDS displays them in different categories and different colors.
Note
Notes provide assistance in interpreting the measurement
results and are displayed in a blue window.
Use one of the following options:X

Click on the warning triangle in the footer to display/hide
the window.

X

If applicable, click the Next message button to display
more messages of the same category.

X

Click the Confirm button to remove the displayed message.

Warning
Non-safety-critical problems that influence the quality of themeasurement results, for example, are displayed in a yellow
window.
Use one of the following options:X

Click on the warning triangle in the footer to display/hide
the window.

X

If applicable, click the Next message button to display
more messages of the same category.

X

Click the Confirm button to remove the displayed message.

Device error
Device errors that can result in damage of the device are displayedin an orange window.
In this case, proceed as follows:1.

Fix the problem.

2.

Click the Confirm button to remove the message.
The message disappears. If the problem is not fixed, thenthe message appears again shortly afterwards.

3.

Do not proceed with the measurement until the problem issolved.

Safety critical note
Safety-critical problems that can result in damage/destructionof the device are displayed in a red window.
In this case, proceed as follows:1.

Fix the problem immediately.

2.

Click the Confirm button to remove the message.
The message disappears. If the problem is not fixed, thenthe message appears again shortly afterwards.

3.

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Do not proceed with the measurement until the problem issolved.

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10.2

Connection error when using the LDS

The firewall may block the connection between the device andthe LDS:XThe UDP port should be enabled by a systemadministrator.

In Windows > Control panel > Firewall, enable the UDP
port 20034.

The IP address of the PC is not within the range of the device.
X

35,0(6

In Windows > Control panel > Network and Sharing Center,assign an IP address to the PC that is in the same address
range as the PRIMES device (e.g. 192.168.116.xyz).
The IP address of the PRIMES device can be found on theidentification plate.

The IP address should be set by a system administrator.

If several network cards or a USB3-to-Ethernet card are installed in
the PC, the connection between device and LDS may be blocked
by the selection of the wrong network card.
1.

Select the appropriate network card in the Connections >All window.
The device is displayed in the Connections window

2.

Click on the device.

3.

Click on the Connect to device button.

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FocusMonitor FMW+

Other errors

Error

Possible cause

RemedyError during a measurement•

Data transmission error

1.

Restart the software.

•

Processor crash in themeasuring system

2.

Turn off the supply voltage, turn it on again, andstart another reset cycle.

•

Program execution error

3.

Restart the computer

Apart from the ambient
noise and zero offset,
no measuring signal isavailable.

The device is not aligned
correctly.

Check the device alignment to the laser beam.

The power density in thefocus is too low.

Increase the laser power. The absolute power density inthe focus typically has to be several hundred kW/cm² toachieve a significant measuring signal with a standard
measuring tip.

The selected resolution is too
low for smaller focus spots(e.g. rf = 80 µm) and a maximum measuring window.

First measure outside the direct focus area. If thisdoes not lead to a result, increase the resolution(e.g. 256 x 256).

The measuring tip is defective.

Insert a new measuring tip, see chapter 11.3 „Check/
replace the measuring tip“ on page 51.

The measuring tip is installed
incorrectly.

Turn the measuring tip around.

The signal enhancement is
too low.

Set the maximum enhancement and select the maximum
measuring range.

The measuring tip isdestroyed during themeasurement.

The power density is too
high, igniting plasma on thesurface of the measuring tip.

Increase the speed of the measuring tip, see appendix
B on page 65 and purge the measuring area withinert gas.

When measuring small
beams, an offset of therecorded measuring
tracks to one another isobserved.

Fluctuations in the synchronisation of the rotation discand delays in triggering thetrigger signal.

Position the beam as close to the left edge of the window
as possible. The time interval between the trigger signal
and start of the measurement is then smaller and errors
can thus be reduced. Averaging is also often helpful inthis case.

A lag of the signal in thex-direction can become
visible in some caseswith the DFY-PS+ detector
and very small beams in
combination with a highmeasuring tip velocity.

The response time of theused photodiode of the DFYPS+ detector.

For such measurements, PRIMES recommends the useof the DFIG-PS+ detector.

Slight differences in sensitivity may occur when using
the DFY-PS+ detector
in the wavelength range
1,064 - 1,080 nm.

The upper limit of sensitivityof the DFY-PS+ detector isclose to the wavelength ofsolid-state lasers.

For such measurements, PRIMES recommends the useof the DFIG-PS+ detector, which provides a broader
wavelength range.

Tab. 10.1:

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Other errors

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11

Maintenance and service

11.1

Maintenance intervals

35,0(6The operator is responsible for determining the maintenance intervals of the measuring device.
PRIMES recommends a maintenance interval of 12 months for inspection and validation.
If the device is used sporadically (less than once a day), the maintenance interval can be extended up to
24 months.
Please note that the safety and warning functions of the device must be checked regularly.
11.2

Cleaning

Cleaning the device surface
1. After a measurement let the device cool down for an adequate period of time.
2. First clean the device surface with clean and oil-free compressed air.
3. For further cleaning, use a mixture of distilled water and isopropanol in a ratio of approx. 5:1.
Use lint-free cleaning cloths that do not cause scratches.
4. If these steps are not sufficient, please contact PRIMES or your PRIMES distributor.
11.3

Check/replace the measuring tip

NOTICE
Damage/Destruction of the measuring tip
The very small pinhole of the measuring tip can quickly become blocked by dirt particles or whentouched with bare hands.
X Wear suitable gloves when installing/removing the measuring tip from the FM+ and make sure thatthe environment is free of dirt and dust
X Do not disassemble the measuring tip, otherwise it will become non-functional.

NOTICE
Damage/Destruction of the device
Imbalance of the rotation disc can damage the device.
X Never operate the device without the measuring tip.
Check measuring tip
The pinhole of a measuring tip can be checked using a HeNe laser.
Remove the measuring tip and shine a 0.5 to 1.0 mW laser into the measuring tip from behind.
The opening in the measuring tip (pinhole) should provide a clear red reflection on the outside.

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Remove the measuring tip
1.

Unplug the power cord to prevent the device from being accidentally switched on again.

2.

Turn the rotational disc until themeasuring tip becomes visible in the
housing recess.

3.

Turn the drive wheel counterclockwise
until the rotation disk protrudes approximately 15 mm into the housing
opening.

Measuring tip
Rotation disc

Retaining plate

Drive wheel

4.

Remove the fastening screws of theretaining plate (Torx T8).

5.

Carefully push the measuring tip andretaining plate upwards through the
housing bore using a screwdriver

6.

Pull the retaining plate up slightly andthen forwards until it loosens and canbe removed easily.

7.

Carefully remove the measuring tip.

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35,0(6

Install the measuring tip

DANGER
Serious eye or skin injury due to laser radiation/Destruction of the measuring tip
If the laser beam hits the measuring tip in the beam path, it could be destroyed and scattered or
directed reflection of the laser beam (laser class 4) occurs.
After installation, move the measuring tip out of the beam path.

1.

Insert the new measuring tip
The inlet aperture is located on
the convex side (see Fig. 7.1 on
page 17).

2.

Use up and down movements toinsert the retaining plate into therotational disc at an angle of about
45 degrees, ensuring that the guidegroove is pointing upwards. Thenpush it down into the recess

X

Check whether the retaining plate is
positioned correctly by lightly pressing
the front edge.

3.

Insert the fastening screws (Torx T8)
and tighten hand-tight.

4.

Move the measuring tip out of thebeam path.

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FocusMonitor FMW+

Replace detector

Generally, the FMW+ is equipped with a DFIG-PS+ detector.
Detectors with different sensitivity or different time behavior can be used for special applications.
More information regarding the variety of detectors to ensure an optimum configuration of the FMW+ is provided
in chapter 11.5 „Selection of the measuring tip and the detector“ on page 59.

CautionRisk of burns
The absorber is hot after a measurement!
Accidentally touching the absorber can cause burns.
Do not change the detector directly after a measurement.
Allow the device to cool down for an appropriate period of time. The cooling time varies depending on the laser power and irradiation time.

NOTICE
Damage of the detector
Touching the sensor surface will damage the detector. This can negatively affect the measuring results.
X Do not touch the detector with your fingers on the sensor surface.
X Do not place the detector on the sensor surface to avoid scratches.

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Replace detector
1.

Unplug the power cord to prevent the device from being accidentally switched on again.

2.

Turn the drive wheel counterclockwise until it
stops.
The detector is now in a position where it canbe dismantled.

3.

Carefully detach the black plug (A) and then the
gold-colored angled plug (B) from the detector(e.g. using needle-nose pliers).

X

Don’t pull the cables!

B A

4.

Remove the retaining screws on both sides ofthe base plate.

X

Note that the screws are of different lengths.

5.

Tilt the housing backwards.

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FMW+ when unfolded.
X

The absorber is hot after a measurement!
Accidentally touching the absorber can causeburns.
Detector

Absorber

6.

Remove the plastic screws (D) of the detector
using the short screwdriver (included).

X

Never remove the two Torx screws.

D

D

7.

Remove the detector.

X

Do not touch the detector with your fingers on
the sensor surface.

X

Do not place the detector on the sensor surface
to avoid scratches.
Sensor surface

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Assemble detector

NOTICE
Blocking the rotational disc
Do not forget the foam rubber spacer during installation, otherwise the rotational disc could bemechanically blocked by the screws.
The foam rubber spacer also ensures mechanical isolation of the detector.
X Only tighten the plastic screws hand-tight. The foam rubber spacer must only be compressed tono less than half its original thickness.
Only use isolating plastic screws to fasten the detector to prevent any electric noise signals frombeing interspersed.
Install the new detector in reverse order.
1.

To install the new detector, first place the foamrubber spacer (C) (included in the scope of delivery)on the mounting surface of the detector.

C
D
D

2.

Center the detector to the housing.

3.

Fasten the detector with the two plastic screws (D).

X

Only tighten the plastic screws hand-tight.
The foam rubber spacer must not be compressed
to more than half its original thickness.

Maintain distances!

D
D

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Tilt the housing forward.

5.

Screw in the retaining screws on both sides ofthe base plate.

X

Note that the screws are of different lengths.

6.

Then first connect the gold-colored right-angle
connector (B) and then the black connector (A).

FocusMonitor FMW+

B A

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11.5

Selection of the measuring tip and the detector

Depending on the laser type, you must use the appropriate measuring tip and detector. The measuring tips
and detectors are available for different wavelengths, power density ranges, or beam divergences so thatmeasurements can be recorded at a maximum power in each case.
This ensures that an optimum configuration of the FMW+ is achieved. Only one value can be exploited fully
for the power or power density.
The service life of the measuring tips depends not only on the power density but also on the cleanliness ofthe surface (dust, particles, fingerprints). Therefore, the measuring tips must be treated very carefully.
Measuring tips specifications and selection of suitable detectors
The measuring tips are suitable for different power densities depending on the design. The power density
depends on the laser power and focus size.
Observe the destruction limits of the measuring tips in appendix B on page 65.
Measuring tips

CO2 high power

NIR high div

Diode

Typical pinhole diameter in µm

20 – 2520

50

Beam divergence/acceptance angle in mrad

< 240

< 200

< 500

Typical wavelength in nm

9 000 − 12 000

400 − 1 700

400 − 1 700

CO2-laser

Max. power density in MW/cm

Laser power up to 1 kW

20

NIR-laser

Max. power density in MW/cm

Laser power up to 1 kW—

VIS-laser

Max. power density in MW/cm

Laser power up to 1 kW

—

5

—

DFC+

DFIG-PS+, DFY-PS+

DFIG-PS+, DFY-PS+

—

5

—

2.5

Suitable detectors
Detector types
Tab. 11.1:

Measuring tips specifications and selection of suitable detectors

Detector specifications
Detector typs

DFC+

DFY-PS+

DFIG-PS+

Laser

CO2

NIR/VIS

NIR

Sensor typ

Pyroelectric

PhotodiodePhotodiode

Amplification

1

Automatic adjustment

Automatic adjustment

Wavelength range in nm

9 000 − 12 000

400 − 1 100

800 − 2 100—

100 (800 − 1 100 nm)

100Min. beam diameter at 1 875/3 750 min-1

Tab. 11.2:

Detectors specifications

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Measures for the product disposal

As a B2B device, this PRIMES measuring device is subject to the European Waste Electrical and Electronic
Equipment (WEEE) Directive and the corresponding national laws. The WEEE directive obliges the operatingcompany to dispose of the device in an environmentally sound manner, not with household waste, but in a
separate WEEE collection.
PRIMES gives the opportunity to return PRIMES measuring devices for free disposal within the scope of the
Waste of Electrical and Electronic Equipment (WEEE Directive). This service does not include shipping costs.
Send PRIMES measuring devices to be disposed of within the EU to our address:
PRIMES GmbH
Max-Planck-Str. 264319 Pfungstadt
Germany
If you are located outside the EU, please contact your local PRIMES distributor to discuss the disposal procedurefor your PRIMES measuring device.
PRIMES is registered at the german „joint body“ for producers „Stiftung Elektro-Altgeräte Register“ (Stiftung EAR).
Our number is: WEEE-reg.-no. DE65549202.

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1335,0(6

Declaration of conformity

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FocusMonitor FMW+

Technical data

Measurement parameters
Power range 1)

up to 1 000 W

Wavelength range

400 – 12 000 nm

Beam dimensions

100 – 3 000 µm

Max. power density range CO2- and NIR laser

90 kJ

Max. power density(depending on measuring tip)

CO2 laser (10 600 nm)

20 MW/cm²

Nd:YAG laser (1 000 – 1 100 nm)

5 MW/cm²

VIS laser (515 – 550 nm)

5 MW/cm²

Dioden laser (800 – 1 000 nm)

2.5 MW/cm²

NIR high div

240 mradCO2 high power

200 mradDiode

500 mradMax. beam divergence(depending on measuring tip)

Determined parameters
Focus position x, y, z

yes (with external z-axis)

Focus radius x, yyesBeam quality factor M²

yes

Raw beam diameter at the focusing element

yes

Beam parameter productyes

Divergence angle

yesPower density distribution

2D, 3D

Device parameters
Working range x-y

8 x 8 mm

Resolution

32 x 32 to 1 024 x 1 024 pixel

Speed of measuring tip

1875, 3750 min-1

Supply data
Power supply

24 V DC ± 5 %, max. 1.8 A

Communication
Interface

Ethernet

Dimensions and weight
Dimensions (L × B × H)

185.5 x 153 x 208.5 mm

Weight (approx.)

8 kg

Environmental conditions

1)

Operating temperature range

10 – 40 °C

Storage temperature range

5 – 50 °C

Reference temperature

22 °C

Permissible relative humidity (non-condensing)

10 – 80 %No general performance limit. It is not permissible to exhaust the extremes of individual technical data at the same time.

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Dimensions

If not otherwise stated, all dimensions are in millimeters (mm).

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16

AppendixA

GNU GPL license notice35,0(6The software of this product contains software code that is licensed subject to the GNU General Public
License (GPL) Version 2 or later. The license terms of the GNU GPL Version 2 or later are available on thefollowing websites:•

https://www.gnu.org/licenses/old-licenses/gpl-2.0•

https://www.gnu.org/licenses/

B

Determine the speed of the measuring tip used

The calculations assume a Gaussian profile.
The maximum power density in real beams with the same dimensions is often slightly smaller (typically minus
10 – 20%, minus 50% for a tophat distribution).
In case of doubt, start with a lower laser power.

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Limits for measuring operation

Table elemet

White

Green

Red

Speed in min-1

1875

3750

Risk of destruction!

Focus diameter in µm

CO2 high power measuring tip

NIR high div measuring tip

Diode measuring tip

70

5,20

25,98

51,97

5,20

25,98

51,97

5,20

25,98

51,97

80

3,98

19,89

39,79

3,98

19,89

39,79

3,98

19,89

39,79

90

3,14

15,72

31,44

3,14

15,72

31,44

3,14

15,72

31,44

100

2,55

12,73

25,46

2,55

12,73

25,46

2,55

12,73

25,46

125

1,63

8,15

16,30

1,63

8,15

16,30

1,63

8,15

16,30

150

1,13

5,66

11,32

1,13

5,66

11,32

1,13

5,66

11,32

175

0,83

4,16

8,32

0,83

4,16

8,32

0,83

4,16

8,32

200

0,64

3,18

6,37

0,64

3,18

6,37

0,64

3,18

6,37

225

0,50

2,52

5,03

0,50

2,52

5,03

0,50

2,52

5,03

250

0,41

2,04

4,07

0,41

2,04

4,07

0,41

2,04

4,07

275

0,34

1,68

3,37

0,34

1,68

3,37

0,34

1,68

3,37

300

0,28

1,41

2,83

0,28

1,41

2,83

0,28

1,41

2,83

325

0,24

1,21

2,41

0,24

1,21

2,41

0,24

1,21

2,41

350

0,21

1,04

2,08

0,21

1,04

2,08

0,21

1,04

2,08

375

0,18

0,91

1,81

0,18

0,91

1,81

0,18

0,91

1,81

400

0,16

0,80

1,59

0,16

0,80

1,59

0,16

0,80

1,59

425

0,14

0,70

1,41

0,14

0,70

1,41

0,14

0,70

1,41

450

0,13

0,63

1,26

0,13

0,63

1,26

0,13

0,63

1,26

475

0,11

0,56

1,13

0,11

0,56

1,13

0,11

0,56

1,13

500

0,10

0,51

1,02

0,10

0,51

1,02

0,10

0,51

1,02

525

0,09

0,46

0,92

0,09

0,46

0,92

0,09

0,46

0,92

550

0,08

0,42

0,84

0,08

0,42

0,84

0,08

0,42

0,84

575

0,08

0,39

0,77

0,08

0,39

0,77

0,08

0,39

0,77

600

0,07

0,35

0,71

0,07

0,35

0,71

0,07

0,35

0,71

625

0,07

0,33

0,65

0,07

0,33

0,65

0,07

0,33

0,65

650

0,06

0,30

0,60

0,06

0,30

0,60

0,06

0,30

0,60

675

0,06

0,28

0,56

0,06

0,28

0,56

0,06

0,28

0,56

700

0,052

0,26

0,52

0,052

0,26

0,52

0,052

0,26

0,52

725

0,048

0,24

0,48

0,048

0,24

0,48

0,048

0,24

0,48

750

0,045

0,23

0,45

0,045

0,23

0,45

0,045

0,23

0,45

775

0,042

0,21

0,42

0,042

0,21

0,42

0,042

0,21

0,42

800

0,040

0,20

0,40

0,040

0,20

0,40

0,040

0,20

0,40

850

0,035

0,18

0,35

0,035

0,18

0,35

0,035

0,18

0,35

900

0,031

0,16

0,31

0,031

0,16

0,31

0,031

0,16

0,31

950

0,028

0,14

0,28

0,028

0,14

0,28

0,028

0,14

0,28

1000

0,025

0,13

0,25

0,025

0,13

0,25

0,025

0,13

0,25

1500

0,011

0,06

0,11

0,011

0,06

0,11

0,011

0,06

0,11

2000

0,006

0,03

0,06

0,006

0,03

0,06

0,006

0,03

0,06

3000

0,003

0,01

0,03

0,003

0,01

0,03

0,003

0,01

0,03

0,1

0,5

1

0,1

0,5

1

0,1

0,5

1

Power in kW
Tab. B.1:

66

Power density in MW/cm²

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