Touch Probes
For Machine Tools

www.heidenhain.com/touch-probes

09/2024

Touch probes for machine tools

Contents

Touch probes from HEIDENHAIN are
designed for use on machine tools—
particularly milling machines and machining
centers. Touch probes help reduce setup
times, increase machine usage time andimprove the dimensional accuracy of thefinished workpieces. Setup, measuring andmonitoring functions can be performed
manually or—in conjunction with most
CNC controls—can be controlled by aprogram.

Touch probes from HEIDENHAIN

Application examples

6

Workpiece measurement

7

Tool measurement

8

Inspecting and optimizing machine accuracy

9

Selection guide for TS workpiece touch probes• Workpiece alignment• Preset setting• Workpiece measurement• Digitizing or inspecting 3D surfaces

10

Principle of operation

12

Mounting

18

Probing

21

Specifications

24

Tool measurement
Selection guide for TT tool touch probes

Tool measurement
Successful series production hinges on
the prevention of scrap or rework and on
the attainment of consistently high-quality
manufacturing. The tool is a decisive
factor in this. Wear or tool breakage that
goes undetected for extended periods,
especially during unattended operation,
results in defective parts and an
unnecessary increase in costs. Therefore,
exact measurement of the tool dimensions
and the periodic inspection of the tool forwear are absolutely essential.
HEIDENHAIN offers the TT touch probes
for tool measurement on the machine.

30

Principle of operation

33

Mounting

34

Probing

35

Specifications

36

Electrical connection

38

Power supply
Interfaces

HTL trigger signals

39

EnDat for touch probes

41
42

Connection to CNC controls

With the TT triggering touch probes, theprobe contact is deflected from its rest
position, sending a trigger signal to the NC
control during three-dimensional probing ofa stationary or rotating tool.

2

Aligning the workpiece and setting the preset

Workpiece measurement

Workpiece measurement
HEIDENHAIN offers TS triggering touchprobes for workpiece measurement righton the machine. The touch probes areinserted into the tool holder either manually
or by the tool changer. Depending on the
probing functions of the NC control, they
can automatically or manually perform thefollowing:

Worldwide presence
In whichever country your machine
equipped with a touch probe may befound, HEIDENHAIN is there to support
you on site.

4

Highly effective and accurate

Cable overviews

Further information:
Comprehensive descriptions of cables
and connectors can be found in the
Cables and Connectors brochure.

Touch probes

44

Touch probes with EnDat or HTL interface

45

Touch probes for other interfaces

46

Highly effective and accurate

HEIDENHAIN has been developing andmanufacturing touch probes for workpieceand tool measurement on machine tools
for over 35 years now. It has set standards,
for example, with• its wear-free optical sensor,• its integrated flushers/blowers forcleaning the measuring point withcompressed air or coolant lubricant,• its SE 540 transceiver, which is capableof being fully integrated into the spindle
housing,• its collision protection for the TS 460, and• its EnDat interface for the TS 460, TS 760
and TS 460 touch probes.

Collision protection and thermal
decoupling (option for TS 460)
Collision protection is a major topic at
HEIDENHAIN. The touch probes feature asizable deflection path and offer additionalsafety through rated break points in thestylus and in the connecting pin for theprobe contact. For expanded collision
protection, including for the touch probehousing of the TS 460, HEIDENHAIN offers
an optional mechanical adapter between
the touch probe and the taper shank. In theevent of a light collision against a fixture or
workpiece, the touch probe is capable ofyielding to absorb the shock. An integrated
switch simultaneously deactivates theready signal, and the control stops themachine.

Wear-free optical sensor
Because the optical sensor is free of wear,
it is able to provide the specified probing
repeatability even after a large number ofprobe measurements (over 50 million
switching cycles). This means that touchprobes from HEIDENHAIN are also
excellently suited for grinding machines.
The optical sensor features an optimized
lens system and an integrated preamplifier
for stable output signals.

Reliable measurement results
High process reliability requires clean
measuring points. That is why all wireless
TS workpiece touch probes from
HEIDENHAIN have flushers/blowers
for cleaning the workpiece by meansof compressed air or coolant lubricant.

3
2.5
2
1.5
1
0.5

1 measuring block with F 3000
2 measuring blocks with F 1000 and F 500

4

0.480

0.440

0.400

0.360

0.320

0.280

0.240

0.200

0.160

0.120

0.080

0.040

0
0.000

Distance in mm Time savings and increased
performance
The high probe repeatability of typically2 σ < 0.5 µm enables setting up andcalibration in just one measuring blockwith the TS 460. Not only can the second
measuring block be omitted, but touchprobes from HEIDENHAIN also permit highprobing speeds at a consistent level ofaccuracy.

Furthermore, the collision protection
adapter functions as a thermal decoupler,which protects the touch probe from being
heated by the spindle.

Time in s

EnDat for touch probes
The TS 460, TS 760 and TT 460 touchprobes support the EnDat output interface
for touch probes. In addition to providing
the trigger status, the EnDat interface
supplies the control with various types ofadditional data and diagnostic information.
As a result, connecting touch probes to the
TNC is particularly easy, and daily operation
becomes even more reliable.

5Application examples
Aligning the workpiece and setting the preset

Workpiece alignment
Exact workpiece alignment parallelto the axes is particularly important forworkpieces that have already been partiallymachined so that their existing reference
surfaces are in an accurately defined
position. With the TS touch probes from
HEIDENHAIN, you can avoid this timeconsuming procedure and forgo theclamping devices that would otherwise
be needed:• The workpiece is clamped in any
position.
• The touch probe ascertains theworkpiece misalignment by probing asurface, two holes or two studs.
• The CNC compensates for the
misalignment by rotating the coordinate
system. Compensation is also possible
through rotation of a rotary table.

Workpiece measurement

The TS touch probes from HEIDENHAIN
are suited for program-controlled
workpiece measurement between two
machining steps, for example. The resulting
position values can be used for tool-wearcompensation.

Compensating for misalignment through a basicrotation of the coordinate system

Compensating for misalignment through rotationof a rotary table

Upon completion of the workpiece,
the measured values can be used to
document dimensional accuracy or tomonitor machine trends. The CNC canoutput the measurement results throughits data interface.

With the aid of external software—for
example, FormControl (software package
from Blum-Novotest) or digitizing
software—you can digitize models
or measure free-form surfaces rightin the machine tool. In this way, you can
immediately detect machining errors andcorrect them without reclamping. Thanks
to their mechanical design and wear-free
optical switch, TS touch probes from
HEIDENHAIN are particularly well suitedfor this purpose.

Preset setting
Programs for machining a workpiece arereferenced to presets. Finding this point
quickly and reliably with a workpiece touchprobe reduces nonproductive time andincreases machining accuracy. Dependingon the probing functions of your CNC, theTS touch probes from HEIDENHAIN enable
the automated setting of presets.

Measuring individual positions in an axis

Measuring the angle of a line

Length measurement

6

Center of a rectangular studCenter of a circular studMeasuring a rectangular pocket

Measuring a circular pocket/holeCenter of a bolt hole circle

Outside corner

Measuring a diameter

Measuring the angle of a plane

Measuring a bolt hole circle

7

Tool measurement

Consistently high machining accuracy
requires an exact measurement of tool
data and cyclical inspection of tool wear.
The TT tool touch probes can measure awide variety of tools right on the machine.
For milling cutters, length and diameter

Inspecting and optimizing machine accuracy

are measured and it is also possible
to measure individual teeth. The CNC
automatically saves the measured tool
data in the tool memory for later use
in the part program.

Using a cuboid probe contact, you can alsomeasure lathe tools and check them forwear or breakage. For effective tool-tip
radius compensation, you need only add
the cutter radius to your entries in the CNC.

Calibrating rotary axes*
Accuracy requirements are becoming evermore stringent, particularly in the realm of
5-axis machining. Complex parts must be
manufactured with both precision andreproducible accuracy, including overextended periods of time.
With a TS touch probe and a KKH
calibration sphere from HEIDENHAIN,
you can calibrate the rotary axes of yourmachine and minimize measurement error
in the machine’s kinematic description. This
capability makes sustained high-accuracy
machining possible—from one-off parts all
the way to large production series. For
kinematics measurements, it plays no role
whether the rotary axis is a swivel head,rotary table or tilting table.

Tool length and radius measurement withstationary or rotating spindle

Individual tooth measurement, such as forinspecting indexable inserts (not for brittle
materials)

A particularly rigid calibration sphere should
be used for kinematics measurements. This
helps to reduce deformations that occur
as a result of probing forces. The KKH
calibration spheres from HEIDENHAIN,
which are specially designed for this typeof application, exhibit particularly highrigidity and are available in various lengths.
Calibration spheres:
KKH 80; height: 80 mm ID 655475-03
KKH 250; height: 250 mm ID 655475-01

These calibration spheres are also well
suited for 3D calibration* of the touchprobe. This kind of calibration is necessary,for example, when 3D geometries are to
be measured with exactness. Following
3D calibration, the individual triggering
behavior of the touch probe can becompensated for in any direction. By thismeans, highly accurate three-dimensional
measured values can be attained.

* These functions must be implemented
in the machine and control by the machine
manufacturer.

Lathe tool measurement

Tool wear measurement

Tool breakage monitoring

89

Selection guide for TS workpiece touch probes

The TS workpiece touch probes from
HEIDENHAIN help you perform setup,measuring and inspection functions directlyon the machine tool.
The stylus of a TS touch trigger probe isdeflected upon contact with a workpiecesurface. At that moment the TS generates
a trigger signal that, depending on themodel, is transmitted to the control either
by cable or by radio or infrared transmission.
The control simultaneously saves the actual
position values as measured by the machine
axis encoders and uses this information forfurther processing.

TS workpiece touch probes
TS 460Area of application

2 σ  1 μm

Power supply

Rechargeable or nonrechargeable batteries

Connection overSE 660, SE 540,
SE 640,1) SE 6612)

SE 540, SE 640,
SE 660HTL or EnDat 2.2
via the SE

HTL via the SE

2)Touch probes with wireless signaltransmission for machines equippedwith automatic tool changers:

Infrared

Probe repeatability

1)

TS 760Machining centers; milling, drilling and boring machines;
lathes with automatic tool changers

Signal transmission Radio/infrared

Interface to control

HEIDENHAIN touch probes are available invarious versions for the measurement of
workpieces on machining centers, milling,
drilling and boring machines, as well as on
CNC lathes:

TS 642

Contents1)

TS 260TS 150TS 750Principle of operation

Grinding machines
Milling, drilling andboring machineswith manual toolchanging, as well as
lathes and grinding
machines

Radio/infrared

Axial or radial cable2 σ  0.25 μm

2 σ  1 μm

2 σ  0.25 μm

DC 10 V to 30 V

DC 10 V to 30 V (via UTI 150)

SE 660, SE 540,1)
SE 640,1) SE 6612)–

UTI 150

HTL or EnDat 2.2
via the SE

HTL and floating switching output

Mounting

Probing

Only for infrared transmission
For EnDat
Specifications

Sensor12

Accuracy13

Signal transmission

14

Transmission range

16

Optical status indicator

17

Workpiece touch probes

18

Transceiver

20

General information

21

Collision protection andthermal decoupling

22

Styli

23

TS 260, TS 150 and TS 750

24

TS 460, TS 642 and TS 760

26

SE 661, SE 660, SE 640 and
SE 54028

TS 460: universal touch probe for radio andinfrared transmission, featuring compact
dimensions
TS 642: infrared transmission, activation byswitch in the taper shank, and compatibility
with previous generations of touch probes
TS 760: high probing accuracy andrepeatability, low probing force, featuring
radio and infrared transmission
Touch probes with cable-bound signaltransmission for machines with manual
tool changing, as well as for grinding
machines and lathes:
TS 150/TS 750: high probing accuracy(TS 750), with axial or radial cableconnection on its baseTS 260: axial or radial cable connection

10

11

Principle of operation
Sensor

Accuracy

TS 150, TS 260, TS 460, TS 642
These touch probes from HEIDENHAIN
operate with an optical switch as their
sensor. A lens system collimates the lightemitted by an LED and focuses it onto a
differential photocell. Upon deflection of
the stylus, the differential photocell
produces a trigger signal.

TS 760, TS 750
The TS 760 and TS 750 use a high-precisionpressure sensor. The trigger pulse is
obtained through force analysis. The forcesthat arise during probing are processed
electronically. This method delivers
extremely homogeneous probing accuracy
over 360°.

The stylus of the TS is rigidly connected
to a plate that is integrated in the probehousing on a three-point bearing. This
three-point bearing ensures the physicallyideal rest position.

With the TS 760 or TS 750, the deflection of
the stylus is measured by multiple pressure
sensors arranged between the contact
plate and the probe housing. During
probing of a workpiece, the stylus isdeflected and a force acts on the sensors.
The resulting signals are processed and thetrigger signal is generated. The relatively
low probing forces involved provide highprobing accuracy and repeatability, virtually
without any effect on the measured object.

Thanks to the non-contacting optical switch,
the sensor is free of wear. As a result,
HEIDENHAIN touch probes ensure highlong-term stability with constant probe
repeatability even after a high number ofmeasuring cycles (e.g., as with in-processapplications).

Probing accuracy
The probing accuracy is the measurement
error that is determined based on themeasurement of a test object fromdifferent directions.
The probing accuracy also includes theeffective ball radius. The effective ball radius
is calculated based on the actual ball radius
and the stylus deflection required forgenerating the trigger signal. Stylus
bending is also taken into account.
The probing accuracy of a touch probe ismeasured at HEIDENHAIN on precision
measuring machines. The reference
temperature is 22 °C. Refer to thespecifications for the stylus that is used.

Probe repeatability
Probe repeatability represents themeasurement errors that result after the
repeated probing of a test object from one
direction. Typical values can be maintainedor even improved on with optimum
orientation.
Influence of probe styli
Stylus length and stylus material directly
influence the trigger characteristics of atouch probe. Styli from HEIDENHAIN meethighest quality requirements and ensure
exceptional probing accuracy.

The TS 760 and TS 750 touch probes arecharacterized particularly by high probing
accuracy and repeatability. These features,
together with the low probing force, makethese touch probes suitable for highly
demanding measuring tasks on machine
tools.

Contact plate

Lens system

Pressure sensors
LED

HousingDifferential
Photocell

Stylus

Stylus

Probe accuracy grade S [micrometers]

Contact plate
Probe accuracy grade X and Y axis: ±0.25 µm
Probe repeatability
X and Y axis: 2 s 0.13 µm

Probing speed:		
1 mm/sReference temperature: 22 °C ±1 °C

Probing direction
Excerpt from a calibration chart

12

13

Signal transmission

Cable-bound signal transmission
The TS 150, TS 750 and TS 260 touchprobes feature a plug-in cable over which
the voltage is supplied and the trigger
signal is transmitted.

Infrared transmission
Infrared transmission is ideal for compact
machines with closed working spaces.
Thanks to reflection, the signal is received
even in otherwise inaccessible locations.
Infrared transmission has a range of up to
7 m. The carrier frequency method used by
the TS 460 and the TS 760 provides highnoise immunity with extremely shorttransmission times of approximately
0.2 ms for the trigger signal.

TS 260
Supply voltage

When the TS 260 is used for milling, drillingand boring machines, the machine operator
manually inserts the touch probe into thespindle. The spindle must be locked before
the touch probe can be inserted (spindlestop). The CNC’s probing cycles can run
with both vertical and horizontal spindles.

Trigger signal

Radio transmission (only TS 460, TS 760
and TT 460)
Radio transmission is used primarily forlarge machine tools. The range is usually
15 m, but much larger ranges are possible
in practice under ideal circumstances.
Radio transmission operates in the free
ISM band at 2.4 GHz and features
16 channels. The transmission times forthe trigger signal are approximately 10 ms.
Each touch probe is uniquely addressed.

Wireless signal transmission

In the case of wireless touch probes,
signals are transmitted to the SE
transceiver as follows:• For the TS 460 and TS 460, by radio or
infrared transmission• For the TS 642, by infrared transmission

TS 460TT 460SE 660As a result, these touch probes are well
suited for use on machines with automatic
tool changers.

Start signal
Ready signal

The following transceivers are available:• SE 660 and SE 661 for radio and infraredtransmission; SE shared by TS 460,
TS 760 and TT 460• SE 540 for only infrared transmission;for installation in the spindle head
• SE 640 for only infrared transmission
The SE 660 and SE 661 communicate with
the TS 460, TS 760 and TT 460. The SE 540
and SE 640 can be used in any combination
with the TS 460, TS 642 and TS 760 touchprobes.
The following signals are transmitted: thestart signal activates the touch probe. The
touch probe indicates operability by meansof a ready signal. A deflection of the stylus
produces the trigger signal. When thebattery capacity becomes low, a battery
warning is output. The falling edge of thestart signal switches the touch probe off.

Supply voltage

Trigger signal
Battery warning

SE 660TS 460TS 760Radio/infrared

TS 642

Infrared

SE 661

SE 540Infrared

Signal transmission types and combinations between TS and SE

SE 640Hybrid technology: signal transmission
via radio or infrared signals (only TS 460,
TS 760 and TT 460)
The dual signal transmission of the touchprobes combines the advantages of radio
signals (high range and large quantities ofdata) with infrared signals (fast signaltransmission). You can switch between
three possibilities: pure infraredtransmission (factory default setting), pureradio transmission or mixed operation. This
arrangement offers the following benefits:• You save time per measuring cycle
without sacrificing accuracy if you
activate the touch probe by radio while
it is still in the tool changer (i.e., outsideof the working space). Measurement
is then conducted with infraredtransmission, thereby enabling
short transmission times.
• You can operate a single touch probe
version on different types of machines(milling machines, lathes, grinding
machines) and on any machine size (fromsmall and enclosed to large and open).

Infrared

Regardless of whether you work with radioor infrared transmission, you require only
one SE 660 or SE 661 transceiver.

15 m(typical)
Radio

14

15

Transmission range

Optical status indicator

Infrared transmission

Touch probes and transceivers from
HEIDENHAIN are equipped with LEDs
that indicate not only the output signals
but also the respective state of the device(stylus deflection, readiness, etc.). You cantherefore check the touch probe status andthe transmission at a single glance. Thisfeature simplifies both installation andoperation.

The transmission area between the SE
transceiver and touch probes with infraredtransmission exhibits a lobe shape. To
ensure optimum signal transmission inboth directions, you should mount thetransceiver such that the touch probe islocated within this area during all of its
operating positions. If the infraredtransmission is disturbed or the signal
becomes too weak, the SE notifies the
CNC by means of the ready signal. The sizeof the transmission area depends on boththe touch probe and the transceiver being
used.

Transmission range of the TS 460, TS 642 and TS 760

2)
64
S
ly T
(on

360° emission
The LEDs and receiver modules for infraredtransmission are distributed in such a waythat uniform emission is available over theentire circumference (360°). This ensures a
360° emission range for reliable reception
without prior spindle orientation.

SE 540 transceiver
The SE 540 transceiver features a single
multicolor LED indicator that continuously
displays the state of the touch probe(readiness, deflection and battery capacity).

Angle of emission
The TS 642 wireless touch probe is available
with horizontal emission angles of 0° or+30° for adaptation to the given machine
design. The TS 460 and TS 760 permit
communication with the SE 540 in thenormal version.

Radio transmission

The radio transmission of the TS 460
and TS 760 touch probes is directionindependent. The transmission range
is typically 15 m, but much larger ranges
are possible under optimum conditions.

Transmission signal quality

The signal quality of the infrared or radiotransmission is shown on the SE by meansof a multicolor LED (see Optical statusindicator). It can thus be immediately seen
whether the touch probe is still within thetransmission range of the SE.

TS touch probes
The TS touch probes feature multiple LEDs
arrayed along their circumference (although
not on the TS 150 / TS 750) such that they
are visible at any angle. These LEDs
indicate stylus deflection and, in the caseof wireless touch probes, also display theirreadiness.

Transmission range of the TS 460, TS 642 and TS 760

SE 640 transceiver
The SE 640 is equipped with multiple
multicolor LED indicators that, in addition
to indicating status, also facilitate
diagnostics. These LEDs indicate
the following:• Readiness• Active touch probe• Deflection• Battery capacity• Quality of infrared transmission• Disturbances and faults
SE 660 and SE 661 transceivers
In addition to featuring LEDs, the SE units
for radio and infrared transmission also
feature segment and bar displays. These
provide comprehensive information oncommissioning, operation and diagnostics:• Readiness• Active touch probe• Deflection• Battery capacity• Quality of the radio or infrared signal• Connection setup• Channel utilization for radio signal• Collision and faults• Channel• Mode of operation

Infraredtransmission

Infraredtransmission

StatusStatusOperating mode
ChannelOperating buttons

Radio transmission

TT touch probe

TS touch probe

Channel utilization

16

17

MountingWorkpiece touch probes

Tool holders

The TS workpiece touch probes from
HEIDENHAIN are suitable for use on awide variety of machine tools and featurea corresponding selection of mounting
options:• Taper shanks for machining centers andfor milling, drilling and boring machines• Tool holders for special solutions• Fastening screw threads for custom
mounting solutions (e.g., on lathes orgrinding machines)

If you use other shanks, the touch probes
can be held by standardized cylindricalshanks in commercially available collet
chucks. Cylindrical shanks are available forthe following tool holders:• Weldon or shrink-fit chuck as per
DIN 6535‑HB16• Whistle notch as per DIN 6535-HE16

DIN 6535-HB16

DIN 6535-HE16

For hexagon head,with width A/F 17

DIN 69871
Taper		SK-AD/B 30
SK-AD/B 401)
SK-AD/B 45
SK-AD/B 501)
SK-AD/B 60

Also available in extended length

JIS B 6339
Taper		BT/BBT 30
BT/BBT 40
BT/BBT 50

D
M12
M16
M24

The TS touch probes can also be supplied
without taper shanks. In this case, a thread
is used for mounting.
• M16x1 for the TS 150/TS 750• M28x0.75 for the TS 260• M12x0.5 for the TS 460/TS 760• M30x0.5 for the TS 642/TS 760/TS 460

Rotatable

Accessories:
Coupling joint for TS 260
ID 643089-01
The M22x1 coupling joint with external
thread is used for simple attachment of theTS 260 to a machine element, or mounting
base, or via a tilting device (e.g., on lathes
or grinding machines). With the aid of thecoupling joint, the TS can also be rotatedas desired on a rigid fastening element.
This allows you, for example, to align theTS with an asymmetric or cuboid probe
contact exactly parallel to the machineaxes.
Mounting wrench
For mounting a taper shank to the
TS 460, TS 760: ID 1034244-01
TS 642: ID 519833-01
Mounting base for TS 150/TS 750
ID 1184715-10 axial
ID 1213408-10 radial
ID 1279419-09 axial

1)

20.5

The mounting base with integrated cableoutlet is required for installation of theTS 150 or TS 750.

 4.5
4

 4.5

 25

SW24
 25

Also available in extended length

BIG PLUS is a registered trademark of BIG DAISHOWA SEIKI CO., LTD.

18

ASME B5.50
Taper D
SK 40 UNC 1x000-8
SK 50 UNC 1x000-8

M22x1

22.8

DIN 69893
Taper
HSK-E 25
HSK-E 32
HSK-A 40
HSK-A 50
HSK-A 631)
HSK-B 63
HSK-A 80
HSK-A 1001)

22.5

Only for the TS 260

4.15

1)

D
M16
M20
M24
UNC 1.000-8

D
M12
M16
M20
M24
M30

23

DIN 20801)
Taper		SK-A 40
SK-A 45
SK-A 50
SK-A 501)

Threaded mounting hole

15.7

The TS workpiece touch probes areinserted directly into the machine spindle.
An assortment of taper shanks is delivered
with the TS for use with various clamping
systems. A selection is listed here. Allother commercially available taper shanks,
such as BIG PLUS, are available uponrequest.

4.6

Taper shanks

19

Probing
Transceiver

The SE transceiver for infrared transmission
should be mounted such that it remains
within the transmission range of the touchprobe across the machine's entire range oftraverse. For radio transmission, sufficient
clearance from sources of interference
must be ensured. The lateral clearance tometal surfaces must be at least 60 mm.

The workpiece geometry or position is
ascertained by the TS workpiece touchprobe through mechanical probing. To
ensure correct measurement, theworkpiece should be free of chips andother foreign matter.
Upon deflection of the stylus, a trigger
signal is transmitted to the control. In
addition, the deflection is indicated byLEDs on the circumference of the touchprobe.

SE 660, SE 661 and SE 640 transceivers
Thanks to their high IP68 rating, these SE
units can be mounted as desired in theworking space and can be exposed tocoolant. If the SE 660 or SE 661 is to be
used for both a workpiece touch probe anda TT 460 tool touch probe, then it must be
ensured during mounting that the SE cancommunicate with both touch probes.
The transceiver is fastened from the sideby two M5 threaded holes. Appropriate
holders are available as accessories for
simple mounting. It is also easy to retrofit.
Accessories
Holder for SE 660 and SE 661
ID 744677-01 3-point mounting
ID 1141230-01 Angle bracket
The holder for the SE units is secured to amachine element with two M4 screws,
while the SE itself is simply clipped in.

M4

The wireless touch probes feature an
integrated flusher/blower system: theprobing point can be cleaned of coarse
contaminants by means of compressed
air or cooling lubricant through jets atthe bottom of the probe. Even chipaccumulation in pockets is no problem.
This feature allows automatic measuring
cycles during unattended operation. In
order to use the flushing/blowing feature,
the machine and the control must be
adapted to this function by the machine
manufacturer.

Holder for SE 640
ID 370827-01 Angle bracket
SE 540 transceiver
The SE 540 is intended for integration in
the spindle head. Except for a few cases,
such as on machines with quills, this fact
ensures transmission on machines withvery large traverse ranges or with swivel
heads. The transmission range of theinfrared signal is appropriate to themounting situation. Because the SE 540 isalways located above and to the side of theTS, HEIDENHAIN recommends the use of
touch probes with a +30° emission angle.
The machine must be designed to support
the SE 540.

Cleaning with compressed air

Probing speed
Signal propagation times of the CNC, aswell as infrared transmission and especially
radio transmission, influence the probe
repeatability of the touch probe. In addition
to the signal propagation time, thepermissible stylus deflection must also
be taken into account for the maximum
probing speed. The mechanicallypermissible probing speed is shownin the specifications.

Cleaning with cooling lubricant

Deflection of
the stylus

Deflection of the probe contact
The maximum permissible deflection of
the stylus is 5 mm in every direction (for astylus length of 40 mm). The machine muststop moving within this distance in order toavoid damage to the touch probe.

20

21Collision protection and thermal decoupling(option with TS 460)

Styli

Damage protection for spindles
A mechanical adapter between the touchprobe and taper shank is used for collision
protection. The touch probe is thus capableof giving slightly during light collisions of
its housing against a fixture or workpiece.
An integrated switch simultaneously
deactivates the ready signal, and thecontrol stops the machine. Thus, collision
protection works only when the touchprobe is activated.

Styli for the TS
HEIDENHAIN offers styli featuring ruby balltips and a variety of lengths and geometric
designs. All styli are attached to the TS
touch probes by means of an M3 thread.
Starting from a ball-tip diameter of 4 mm, a
rated break point protects the touch probefrom mechanically induced damage causedby operator error. The following styli are
included in delivery with the TS touchprobes:• TS 150:
T404• TS 750:
T434• TS 760:
T434• TS 260:
2 x T404• TS 460:
T404• TS 642:
T404 and T424

The undamaged touch probe is recalibrated(via the control’s calibration cycle), and you
can then continue working. The collision
protection adapter does not cause any
additional error—not even at highaccelerations (e.g., during tool change).
The machine and the cycles must be
prepared for this function.

The collision protection adapter protects the spindle and touch probe

Ball-tip stylus with carbon-fiber shaft

By using the coupling joint, the TS 260 canbe rotated into position in order to alignasymmetric or cuboid probe contacts
exactly.
Generally the TS touch probes can be
accelerated by up to 10 m/s2 without any
spurious deflections, if the styli listed here
are attached directly. Only the T409, with alength of 60 mm, should be accelerated by
no more than 8 m/s2 when oriented
horizontally.

Ball-tip styli with steel shaft
Model ID
Length l Ball
diameterD
T421 295770-21 21 mm 1 mm
T422 295770-22 21 mm 2 mm
T423 295770-23 21 mm 3 mm
T424 352776-24 21 mm 4 mm
T403 295770-03 40 mm 3 mm
T404 352776-04 40 mm 4 mm
T405 352776-05 40 mm 5 mm
T406 352776-06 40 mm 6 mm

Thermal decoupling
The collision protection adapter alsofunctions as a thermal decoupler. Thisfeature protects the touch probe frombeing heated by the spindle.
If the spindle heats up strongly due toprevious machining operations—particularly
during long measuring cycles—then thetouch probe can become hot as well.
Faulty measurements may be the result.
Yet thanks to its collision protection feature,
the touch probe with thermal decoupling
reduces heat conduction from the spindle
to the touch probe.

Ball-tip styli with 3 mm steel shaft
Model ID
Length l Ball
diameterD
T434 295770-34 40 mm 4 mm
T408 352776-08 40 mm 8 mm
T409 352776-19
60 mm 4 mm

Thermal decoupling (with collision protection adapater on the left)

Star-type insert
For up to five styli(e.g., T404 or T421)
ID 1090725-01

Ball-tip styli with carbon-fiber shaft
Model ID
Length l Ball
diameter
D
T510
805228-01 100 mm 5 mm
T515
805228-02 150 mm 5 mm
T520 805228-03 200 mm 5 mm
T530 805228-05 300 mm 5 mm
T615
805228-10 150 mm 6 mm
T610
805228-07 100 mm 6 mm

Styli

Additional styli, including special shapes,
are available upon request.

Stylus extension
Model ID
Length l Material
T490 296566-90 50 mm Steel
T790 1213836-06 60 mm Titanium

Extension

The stylus extension may be used only in
conjunction with the short styli (21 mm inlength).

Stylus adapters
For the fastening of styli
with M4 thread
ID 730192-01

22

23

TS 260, TS 150 and TS 750
Workpiece touch probes

Cable

M22x1
20.5

20.5

Deflection of probe
contact

 5 mm in all directions (with stylus length L = 40 mm)

Deflection forces

Axial:  8 N or 3 N
Radial:  1 N or 0.3 N

Axial:  8 N
Radial:  1 N

Probing speed(recommended) 3 m/min

 1 m/minProtection EN 60529

IP68

Operating temperature

10 °C to 40 °C

Storage temperature–20 °C to 70 °C

Mass without taper shank 0.15 kg

Fastening*• With taper shank (only withradial flange socket)• Via M28x0.75 external thread• Via coupling joint with M22x1
external thread• Base with M22x1 thread and axial cable outlet• Base with three M3 screws and axial cable outlet• Base with four M3 screws and axial cable outlet• Optional: touch-probe extension with M16x1 thread

Electrical connection*

8-pin M12 flange socket, axial orradial

Two-pole sliding contact on the mounting base

Cable length 25 m

6.3

7.3

 37

DC 10 V to 30 V/ 100 mA(without load)

3.4
4

DC 10 V to 30 V/ 85 mA (without load)

22.5

4.15

UH  20 V at –IH  20 mA
UL  2.8 V at I25
L  20 mA
at rated
voltage of DC 24 V
M16x1

 25

 37
 20

Cable

Signal transmission* Please select when ordering
See Mounting on page 18
2)
With the TS 150 and TS 750: via UTI 150 30 37

 0.1 kg

• Trigger signals S and S (square-wave signal and its inverted signal)• Floating trigger output

HTL signal levels2)
M16x1

5 °C to 54 °C

1)

Output signals2)

1)

37.25

(43.55)36.25(43.55)

4

1.5

56.8

Axial:  1.5 N
Radial:  0.2 N

 4.5

TS 750

 3.4

M16x1

M16x1

 30

40

M12

Axial:  7 N or 3 N
Radial:  1 N or 0.3 N

 4.5

 37
 44
 20

 4.5

17.8

 44 M16x1

TS 150

6.7

SW24
6.7

M16x1

6.7

16.8

Probing force

6.7

SW24
 25

SW24

1.5

2 s  0.25 µm

50/100

 25

SW24
 25

40

2 s  1 µm
Typical values: 2 s  0.5 µm

4
4.6
4.15

23

22.8

15.7

4
4.6

22.8

 25

 25

24

Probe repeatability
Repeated probing fromone direction

Supply voltage2)

 4.5

 4.5

 4.5

SW28

 ±1 µm with use of the T434
standard stylus (at a probing
speed of 500 mm/min)With mounting base

M22x1

54.2

 ±5 µm with use of the T404 standard stylus (at a probing speed of1000 mm/min)23

Radial flange socket

Probe accuracy

15.7

Axial flange socket

TS 750TS 26050/100TS 15022.5

TS 260Workpiece touch probe

 25

25

TS 460, TS 642 and TS 760
Workpiece touch probes

TS 642TS 460TS 760With collision protection

M30x0.5
M30x0.5

M30x0.5
M30x0.5

Workpiece touch probe

TS 460 (radio and infrared)

TS 760 (radio and infrared)

TS 642 (infrared)

Probe accuracy

 ±5 µm with use of the T404
standard stylus (at a probing
speed of 1000 mm/min)

 ±1 µm with use of the T434
standard stylus (at a probing
speed of 500 mm/min)

 ±5 µm with use of the T404
standard stylus (at a probing
speed of 1000 mm/min)

Probe repeatability
Repeated probing fromone direction

2 s  1 µm
Typical values: 2 s  0.5 µm

2 s  0.25 µm

2 s  1 µm
Typical values: 2 s  0.5 µm

Probing force

Axial:  7 N; radial:  1 N

Axial:  1.5 N; radial:  0.2 N

Axial:  7 N; radial:  1 N

Deflection of probe
contact

 5 mm in all directions (with stylus length L = 40 mm)

Deflection forces

Axial:  8 N; radial:  1 N

Probing speed(recommended) 3 m/min

 1 m/min

Collision protection

Optional–

Integrated workpiececleaning function

With collision protection: Purge air Purge air and lubricant
W/o collision protection: Purge airand lubricant

Protection EN 60529

IP68

Operating temperature

5 °C to 54 °C

Storage temperature–20 °C to 70 °C

Mass without taper shank 0.2 kg

Fastening*• With taper shank• Via M30x0.5 or M12x0.5 external thread• With taper shank• Without taper shank (M30x0.5
connecting thread)

Signal transmission

Radio and infrared transmission (selectable) with 360° emission
to the SE

Infrared transmission with 360°
emission

Emission angle of theinfrared signal*

0°0° or +30°

TS switch-on/off

Radio or infrared signal (selectable) from the SE

Via switch in the taper shank or
infrared signal from the SE

Power supply

Two rechargeable or nonrechargeable batteries, 1 V to 4 V each;1
4)
size /2 AA or size LR1

Two rechargeable ornonrechargeable batteries,
1 V to 4 V each; size C or size A4)

Operating time

Typically 90 h3) with alkaline
batteries (included in delivery);typically 400 h3) possible withlithium batteries

Typically 400 h with alkaline
batteries (included in delivery);typically 800 h possible withlithium batteries

Transceiver*• SE 6612)/SE 660 for radio and infrared transmission• SE 640 for infrared transmission• SE 540 for infrared transmission; for integration in the spindle head

SE 540, SE 640 or SE 660 (onlyinfrared)Interface

HTL or EnDat 2.2 via the SE

HTL

8

8.5
55.8

 40

10.5

With collision protection

10 °C to 40 °C

 1.1 kg
1)

M12x0.5

40

55.8
10.5
40

18.5
55.8
10.5
40

 40 40

 41 4126

18.5

M12x0.5
M12x0.5

8.5

8.5

8

M30x0.5

 41* Please select when ordering
1)
See Mounting on page 18
2)
With EnDat interface

 3 m/min

Typically 65 h with alkaline
batteries (included in delivery,see Power supply);
typically 300 h possible withlithium batteries

1)3)	Reduced operating time in the presence of high ambient radio traffic
or with frequent, short probing intervals
4)
Via adapter, included in delivery27

SE 661, SE 660, SE 640 and SE 540
Transceivers

SE 660SE 661

Radio and infrared
SE 661

SE 660SE 640SE 540

Use with

TS 460, TS 760 and
TS 460, TS 760 and
TT 460; any number may TT 460; up to four eachbe connected
may be connected(depending on version)

TS 460, TS 642, TS 760

Signal transmission

Radio or infrared

Infrared

Area of application

In working space of machineInterface

Serial data (EnDat 2.2)
• Activation• Trigger signal• Ready signal• Diagnosis

Optical status indicator

For infrared transmission, radio transmission,
radio channel quality, channel, operating mode
and whether workpiece or tool touch probe

Electrical connection*

8-pin M12 flange socket

12-pin M12 flange socket Cable, 0.5 m or 2 m with 8-pin M9 flange socket
7-pin M23 connector

Cable length 50 m 20 m with adapter cable ¬ 6 mm
 50 m with adapter cable ¬ 6 mm andadapter cable ¬ 8 mm for extension

 30 m with adapter
cable ¬ 4.5 mm
 50 m with adapter
cable ¬ 4.5 mm andadapter cable ¬ 8 mm
for extension

Supply voltage

DC 15 V to 30 V

Current consumption
without load1)
Infrared
Normal operation
Transmission
Radio

3.8 Weff ( 220 mAeff)
12 WPK ( 755 mAPK)
2.4 Weff ( 135 mAeff)

3.4 Weff ( 200 mAeff)
10.7 WPK ( 680 mAPK)
2.1 Weff ( 120 mAeff)

3.7 Weff ( 150 mAeff)
4.3 WPK ( 210 mAPK)–

Protection EN 60529

IP68

Operating temperature

10 °C to 40 °C

10 °C to 60 °C

Storage temperature–20 °C to 70 °C–20 °C to 70 °C

Mass without cable 0.3 kg

SE 640SE 540InfraredTransceiver

In location holein the spindle head

Square-wave signals (HTL)
Square-wave signals• Start signal R(HTL)• Start signals R(-TS) and • Ready signal B• Trigger signal S
R(-TT)• Battery warning W• Ready signals
B(-TS) and B(-TT)• Trigger signals S and S• Battery warning W
For infrared transmission For touch-probe status
and errors

5.1 Weff ( 250 mAeff)
8.3 WPK ( 550 mAPK)–

 0.2 kg 0.1 kg* Please select when ordering
1)
At minimum supply voltageÀ = If L1 > 100: provide a drain hole;
L2 = 10 mm to 100 mm

28

29

Selection guide for TT tool touch probes

Tool measurement on the machine
shortens non-productive times, increases
machining accuracy and reduces the
scrapping and reworking of machinedparts. The tactile TT touch probes allow
you to measure your tools efficiently andreliably.
Due to their rugged design and highdegree of protection, these tool touchprobes can be installed directly within
the machine tool’s work envelope.

TT touch probes
The TT 160 and TT 460 tool touchprobes are touch trigger probes forthe measurement and inspection oftools. The TT 160 uses cable-boundsignal transmission, while the TT 460
communicates wirelessly with the
SE 660 or SE 661 via a radio or infraredtransmission path. The TT 460 is alsoavailable with a quick release system.
The disk-shaped probe contact of the TT
is deflected during the tactile probing ofa tool. In that instant, the TT generates a
trigger signal that is transmitted to thecontrol, where it is then processed further.
The trigger signal is generated by means ofa wear-free optical sensor featuring a highlevel of reliability.

Contents
32

General information
Principle of operation

Sensor33

Mounting

TT tool touch probe

34
35

ProbingSpecifications

TT 160, TT 460

36

The probe contact is easy to exchange.
The connecting pin for the probe contact
features a rated break point. This protects
the touch probe from mechanically induced
damage due to operator error.

TT tool touch probes
TT 160Probing forces

Axial: 8 N, radial: 1 N

Sensitivity to unclean
tools

Very low

TT 460

Possible measuring cycles Length, radius, breakage, individual teeth
Signal transmission

Cable

Radio/infrared to SE 660 and SE 661;
infrared to SE 640

Interface

HTL

HTL, EnDat 2.2 via SE

Repeatability

2 s  1 µm

Minimum tool diameter3 mm

Maximum tool diameter

Unlimited

1)

1)

Probing force must not result in tool damage

30

31

General information

Principle of operation
SensorIn conjunction with the measuring cyclesof the CNC control, the TT tool touchprobes enable the control to measuretools automatically while they are in themachine spindle. The control saves thevalues measured for tool length and radiusin the central tool file. By inspecting thetool during machining, you can quickly anddirectly measure wear or breakage so as toprevent scrap or rework. If the measured
deviations lie outside the tolerances, or if
the monitored life of the tool is exceeded,
the control can lock the tool or automaticallyinsert a replacement tool.

Touch probes from HEIDENHAIN operatewith an optical switch as sensor. A lenssystem collimates the light emitted by an
LED and focuses it onto a differential
photocell. Upon deflection of the probe
contact, the differential photocell producesa trigger signal. The probe contact of the TT
is rigidly connected to a plate that is
integrated in the probe housing on a threepoint bearing. This three-point bearing
ensures the physically ideal rest position.

With the TT 460, all signals are conveyed
to the control via radio or infraredtransmission through the transceiver:• Greatly increased mobility• Rapid installation at any location• Deployable on rotary and tilting tables
as wellYour benefit is that with the TT 160 or
TT 460 tool touch probe, you can haveyour CNC machine be productive during
unattended shifts without expecting scrap
or even any loss in accuracy.

32

Due to its contact-free optical switch, thesensor operates without wear, thereby
ensuring the high long-term stability of
HEIDENHAIN touch probes.
Repeatability
For tool measurement, the repeatabilityof the probing process is of primary
importance. The probe repeatability
specifies the error that is determinedthrough repeated probing of a tool fromone direction at an ambient temperatureof 20 °C.

Probe contact

Connecting pin with rated break point

Lens system
Differential
photocell

SwitchLED

The probing accuracy of a touch probe ismeasured at HEIDENHAIN on precision
measuring machines.

33

Mounting
TT tool touch probe

The tool touch probes feature an IP68
rating and can thus be installed within theworking space of the machine. The TT is
mounted with two fixing clamps or on a
space-saving mounting base that isavailable as an accessory. The TT 460 isavailable with a quick release system,
which uses a premounted magnetic basefor repeated attachment. This reduces thevolume of interfering contours in themachine, thus increasing the available
working space.
The TT with 40 mm probe contact shouldbe operated vertically to ensure reliableprobing and optimum protection against
contamination. Like the cuboid probe
contact, the 25 mm diameter SC02 probe
contact can also be operated when
mounted in a horizontal position.

Probing

Horizontal mounting

Fastening with
fixing clamps

The maximum permissible deflection of
the probe contact is 5 mm in any direction.
The machine must stop moving within thisdistance.
Fixing clamp

Fastening withmounting base

The probe contact of the TT features a
rated break point in order to protect thetouch probe from mechanically induced
damage due to operator error. The rated
break point is effective in all probing
directions. A rubber sleeve offers
protection from splinters. A defective
connecting pin can easily be replaced
without needing to readjust the TT.

Pressure ring

During workpiece machining, the TT
must be switched off in order to ensurethat the vibrations that accompany normal
machining do not trigger a probe signal andcause an interruption.
Accessories:
Mounting base for TT
For fastening with a central screw
TT 160: ID 332400-01
TT 460: ID 651586-01
Mounting base with flusher/blower
For cleaning the tool
Air connection for ¬ 4/6 tube
ID 767594-01

Supply voltage and signal transmission
For the TT 160 touch probe, both the
supply voltage and the trigger signal areprovided over the touch probe’s cable.
The TT 460 wirelessly transmits the trigger
signals to the SE 660 or SE 661 transceiver(see page 14/15).

Mounting base

Mounting base withflusher/blower

Flusher/blower

Optical deflection display
LEDs on the TT 160 additionally indicate
deflection of the probe contact. On the
TT 460, the state of the touch probe is also
shown by LEDs on the SE transceiver. This
characteristic is especially useful for testingcorrect operation, since you can see at a
glance whether the TT is currently
deflected.

TT 160

Supply voltage

Connecting pin for the probe contact(shown without rubber sleeve)

Probe contacts
For probing milling cutters, the tool touchprobes are equipped with a disk-shaped
probe contact with a diameter of 40 mm(for example). A disk-shaped probe contact
with a diameter of 25 mm is available as anaccessory. Due to its low weight, thisprobe contact is particularly recommended
when the TT is mounted horizontally.
The TT tool touch probe can also be used
to calibrate lathe tools. To this end, acuboid probe contact (available as anaccessory) is used, whose flat surfaces arecontacted by the lathe tool. By this means,
you can periodically inspect tools in NCcontrolled lathes for breakage and wear inorder to ensure process reliability.

Trigger signal

34

The hardened probe contact of the TT tool
touch probe permits direct probing of thetool as it rotates in its noncutting direction.
Depending on the tool diameter, speeds of
up to 1000 rpm are permissible. The probe
contact can be exchanged quickly bysimply clamping it with a screw in theconnecting pin.

The probe contacts can be orderedseparately for replacement. Replacing
them is simple and does not require
readjustment of the TT.

Accessories:
Probe contact SC02  25 mm
ID 574752-01
Probe contact SC01  40 mm
ID 527801-01
Probe contact SC06 cuboid
ID 676497-01

35

TT 160 and TT 460
Tool touch probes

TT 160TT 460Quick release with magnetic base

Mounting base

Cable

Radio and infrared

Tool touch probe

TT 160TT 460Probe accuracy

 ±15 µm

Probe repeatability
Repeated probing fromone direction

2 s  1 µm at a probing speed of 1 m/min
Typical values:
2 s  1 µm at a probing speed of 3 m/min
2 s  4 µm at a probing speed of 5 m/min

Deflection of theprobe contact

 5 mm in all directions

Deflection forces

Axial:  8 N
Radial:  1 N

Probing speed

 5 m/minProtection EN 60529

IP68

Operating temperature

10 °C to 40 °C

Storage temperature–20 °C to 70 °C

Mass 0.3 kg

Mounting on themachine table*• Fastening via fixing clamps (included in delivery)• Quick release with magnetic base (included in delivery)• Fastening with mounting base (accessory)

Electrical connection*

8-pin M12 flange socket

1)• SE 660 for radio and infrared transmission• SE 6613) for radio and infrared transmission

Signal transmission

Cable

Radio or infrared transmission (selectable) with
360° emission to the SE

Cable length 25 m–Interface

HTL, floating switching output (trigger)

HTL or EnDat 2.2 via the SE

TT switch-on/off–

Radio or infrared signal (selectable) from the SE

Power supply

DC 10 V to 30 V/ 100 mA (without load)

Two rechargeable or nonrechargeable batteries,
1
1 V to 4 V each; size /2 AA or size LR1

Operating time–

Typically 90 h2) with alkaline batteries (included indelivery);typically 400 h2) possible with lithium batteries

B-B
17.5
 8.5



* Please select when ordering
SE shared by TS 460 and TT 460, see page 28
2)
Reduced operating time in the presence of high ambient radio traffic or with frequent, short probing intervals
3)
With EnDat interface
1)

X

X
124.3

4.6

 4.5

 0.4 kg

X
12
0




°

 48–0.2

X

36

B

B

37

Power supply

Wireless touch probes
The TS 460, TS 642, TS 760 and TT 460
touch probes with wireless transmission
are each powered by two rechargeable ornonrechargeable batteries with a nominal
voltage of 1 V to 4 V. The length of theoperating time depends heavily on thetype and size of battery used (see tablefor examples). The typical operating times
indicated in the specifications apply only tothe use of lithium batteries. An operatingtime of 400 h assumes utilization over a
period of 12 months in three-shift operation
and at a 5 % usage rate.
The touch probe electronics automaticallydetect the type of batteries being used.
When the battery capacity gets low, theSE outputs a battery warning to thecontrol. For operation with rechargeable
batteries, the touch probes are provided
with deep discharge protection: the touchprobe switches off before the battery
charge is exhausted.
The TS 460, TS 760 and TT 460 touchprobes feature intelligent battery
management for minimized current
consumption. When switching off, thetouch probe switches incrementally to its
stand-by state. The longer a touch probe
has been switched off, the less current it
consumes. Activation of a touch probefrom a low stand-by level takes only a split
second longer. This ensures high, praxisoriented availability.
When switched off in infrared transmission,
the touch probes go into stand-by mode
and, after eight hours, into sleep mode.
Longer switch-on times for activation of
the touch probe should thus be expected(see Switching the TS 460/TS 642/TS 760/
TT 460 on and off).

Battery size

1)

Operating time

Lithium battery

Alkaline battery

Touch probes with cable-boundsignal transmission

Upon deflection of the stylus or probe
contact of the TS 150, TS 750, TS 260 or
TT 160, a square-wave trigger signal S and
its inverted signal S are generated.

TS 460TT 4601/2 AA
N/LR1/Lady2)

400 h
–

–
90 h3)

TS 7601/2 AA
N/LR1/Lady2)

300 h

65 h3)HTL signal levels S, S
UH ≥ (UP – 2.2 V) at –IH ≤ 20 mA
UL ≤ 1.8 V at IL ≤ 20 mA

TS 642

C

800 h

400 h

A2)

400 h

200 h

In addition, these touch probes feature two
floating switching outputs (Trigger NO andTrigger NC) that are realized by means of an
optocoupler as a normally closed contact
and normally open contact. The switching
outputs can be connected directly tocontrol inputs that require galvanic isolation(e.g., Fanuc High Speed Skip).

1)	Please note: These are approximate values that can vary depending on the
manufacturer
2)
Via adapter
3)
Included in delivery

Load capacity of optocoupler
Umax ≤ 15 V
Imax ≤ 50 mA¹U ≤ 1 V (typically 0.3 V at I = 50 mA)

100%

Trigger NC
Trigger NO

Trigger signal for TS 150/TS 750/TS 260/TT 160
Response time tR  10 µs
Repeat interval tW > 25 ms

Since the spindle must be locked inplace before the TS can be inserted, theconnecting cables and adapter cables areequipped with jumpers. This enables the
CNC to conduct the required safety checkwhen the touch probe is connected.

Start

Current consumption

Cable-connected touch probes
The cable-bound TS 260 and TT 160 touchprobes, as well as the SE transceivers, arepowered by the control. The cable-boundTS 150 and TS 750 touch probes are
powered by the UTI 150. The maximum
cable lengths shown in the specifications
apply to HEIDENHAIN cables.

Interfaces
HTL trigger signals

ton2

toff1

ton1

Touch probes with wirelesssignal transmission

50%

tR

TS 460/TS 760/TT 460 current consumption
Signal times
Switch-on delay• From stand-by mode: ton2 typically 1 s• From reduced consumption mode: ton1 typically 0.25 s
Switch-off delay• With infrared transmission: toff1 < 1 s• With radio transmission: toff1 < 1 s

Switch-on after break

Subsequent switch-on

The TS 460, TS 760 and TT 460 touchprobes are switched on by the CNC over
the SE. The rising edge of the start signal
R activates the TS, while the falling edge
deactivates it.
When inserted into the spindle, theTS 642 touch probe is activated via themicroswitch integrated in the taper shank.
The SE uses the ready signal B to notify
the control that the touch probe is activatedand within the reception area of the SE.
The workpiece can now be probed.
The delay time t when switching the probe
on or off depends on the distance between
the SE and TS, and on the mode of thetouch probe’s power supply. Subsequent toinitial switch-on (when the TS is in stand-bymode), the typical value for activation is
250 ms; for deactivation, it is 350 ms(1000 ms for the maximum distance).
When activating the probe after a longer
interval (the TS goes into sleep mode after
8 hours), the delay can be up to 3 s.

0<t<8htE1

tE2
tA
Probing

Possible

Possible

Switching the TS 460/TS 642/TS 760/TT 460 on and off
Signal times
Switch-on delaytE1  1000 ms (typically 250 ms)
tE2  3000 ms
Switch-off delaytA  1000 ms (typically 350 ms)

Further information:
Comprehensive descriptions of generalelectrical information can be found in theInterfaces of HEIDENHAIN Encoders
brochure.

38

39

EnDat for touch probes

The TS 460, TS 760 and TT 460 touchprobes feature the EnDat interface fortouch probes. The EnDat interface from
HEIDENHAIN is a digital, bidirectional
interface that transmits the trigger status aswell as diagnostic information and additional
data from the touch probe. Thanks to theinterface’s serial transmission method,
multiple items of data can be transmitted
simultaneously.

Signal times
Response time tR1• With infrared transmission: 0.2 ms• With radio transmission:
10 ms
Repeat interval tW > 25 ms
In the event of a disturbance, the readysignal B is reset. The response time
between the occurrence of the disturbanceand the resetting of the ready signal
depends on the type of signaltransmission.

EnDat for touch probes
The switching data is transmitted in theposition value. The interface is a devicespecific interface for touch probes.
Probing with TS 460/TS 642/TS 760/TT 4601)

Signal times
Response time for interrupted signaltransmission tS• With infrared transmission: ≤ 40 ms• With radio transmission:≤ 55 ms

DisturbanceBattery < 10 %Response time for collision (with collision
protection adapter) tS• With infrared transmission: ≤ 40 ms• With radio transmission:≤ 20 ms
The battery warning W reports that thebattery capacity has fallen below 10 %.
The ready signal also resets the battery
warning.

Probing

Possible

Possible

Behavior during disturbance and battery warning« HTL signal levels
R
UH = (10 V ... 30 V) at IH  4 mA
UL  2 V at –IL  0.2 mA

B/S/W
UH  (UP – 2.2 V) at –IH  20 mA
UL  1.8 V at IL  20 mA

1)

40

The EnDat interface transmits thefollowing data:• Position value:– Touch probe is deflected (timestampin additional data)– Touch probe is ready– Battery warning– Collision (if supported by touch probe)• Additional data and diagnostic
capabilities:– Battery voltage (only with activation
via radio)– Timestamp– Type of transmission (infrared or radio)– Signal strength and transmission
statistics– Installation (only with activation
via radio)– Device name– ID number– Serial number– Radio channel• Commands:– Connect touch probe to SE, switch on– Scan radio channels

Downstream
electronics

Trigger state in theposition value

Operatingparameters

OperatingstatusDiagnostic
valuesThe TS 460, TS 760 and TT 460 touchprobes can be connected to the SE 661
through radio and/or infrared transmission.
In infrared mode, the probing information,
readiness status and battery warning areavailable. In radio mode, additional datafrom the touch probe is available. The
provision of this additional data is anenormous benefit of EnDat-capable
touch probes.
EnDat transmission allows the status of
the touch probe to be depicted in detail via
the downstream electronics. Information
about the touch probe, the battery andthe signal strength can be shown in astraightforward manner. In the caseof a TS 460 with collision protection,differentiation between a collision andthe lack of readiness is possible as well.
The availability of the touch probe canbe increased by this differentiation.

EnDat interface

Upon deflection of the stylus or probe
contact, a square-wave trigger signal S
is generated.

Electronic
ID labelInstallation and device management are
performed on the control. The control
display can provide an overview of all of
the connected devices, including theirserial numbers and transmission types.
Upon deflection of the touch probe, atimestamp is sent along with the switchingdata. This timestamp allows the control to
calculate the correct probing position,
regardless of the probing speed.
Recalibration is therefore unnecessary forprobing at different speeds or for switching
between radio and infrared transmission.

 or signal gatings and deviations, see theFmounting instructions of the SE

41

Connection to CNC controls
Signal converters for integration

HEIDENHAIN touch probes feature
universal interfaces that permit connection
with virtually all relevant CNC controls formachine tools. As needed, HEIDENHAIN
offers UTI interface electronics and optional
software packages to supplement the

CNC

Touch probes

touch probe cycles in the control. A reliable
connection and the functional deployment
of HEIDENHAIN touch probes is thereby
ensured, regardless of the make of thecontrol.

InterfaceControl input

Cycles
CNC-internal

HEIDENHAIN
TNC7
TNC7 basic
TNC 640
TNC 620CNC PILOT 640
MANUALplus 620

Radio/infrared:
TS 460TS 760TT 460Via SE 661

HEIDENHAIN
TNC7
TNC7 basic
TNC 640
TNC 620
TNC 320
TNC 128
CNC PILOT 640
MANUALplus 620

Cable:
TS 260TS 150/TS 750
with UTI 150
TT 160Siemens
828D
840D
840D sl

Fanuc
0
0i
16
18
21
30
31
32
3xi
Mitsubishi
M70/M700 series
M64/M640 series

Radio/infrared:
TS 460, TS 760
TT 460Via SE 660
Infrared:
TS 460TS 642
TS 760Via SE 640,
SE 540

EnDat for touchprobesHTL

Only PLB 62xx,
UEC 3xx:
X112, X113

HSCI1):
X112, X113
Others2):
X12, X1342

UTI 491
The UTI 491 signal converter is a simple
optocoupler relay. With it, touch probes canbe connected with galvanic isolation to theHigh-Speed Skip input on Fanuc controls.
The floating touch-probe switching inputs(Trigger NO and Trigger NC) can also beconnected directly to control inputs that
require galvanic isolation.
ID 802467-01
UTI 150
The UTI 150 signal converter is required if
you want to operate the TS 150 or TS 750
touch probe on NC controls. It adapts thetouch probe signals to the control andserves as the power supply for the touchprobe. The touch probe status is indicatedby LEDs. The UTI 150 is installed in theelectrical cabinet of the machine.
ID 1133534-01

X121, X122 or
X132

Workpiece measurement• Workpiece alignment• Preset setting• Workpiece measurement
Tool measurement• Length, radius• Wear, breakage

Recommended: OEM specific
HIGH SPEED
SKIP3)
Possible:
SKIP (24 V)

SKIP (24 V)

Workpiece measurement• Workpiece alignment• Preset setting• Workpiece measurement
Tool measurement• Length, radius• Wear, breakage

UTI 660
The UTI 660 signal converter is required forconnecting multiple TS 460, TS 760 and
TT 460 touch probes to a HEIDENHAIN
control that does not support EnDat. TheUTI 660 enables you to use up to four
TS 460 or TS 760 probes and four TT 460
probes with radio transmission on acontrol.

UTI 150UTI 660

ID 1169537-01

Basic cycles for• Preset setting• Tool length

When multiple touch probes are operated with the SE 660, a UTI 660 is required
If the TS 460, TS 760 and TT 460 are operated together, a UTI 240 is required3)
If the trigger signal S is used, a UTI 491 is required2)

Separate software from
HEIDENHAIN

Workpiece measurement –• Workpiece alignment• Preset setting• Workpiece measurement
Tool measurement• Length, radius• Wear, breakage• Individual teeth

Mazak
Mazatrol Fusion
Mazatrol Matrix
Mazatrol Smart
Mazatrol Smooth X
1)For adaption of the touch probe signals to
the CNC control, a UTI signal converter
may be required under certain
circumstances. This is particularly true
when SE transceivers are connected to
Fanuc controls, or when older CNC
controls are retrofitted with a touch probe.

Further information:
Comprehensive descriptions of cables
and connectors can be found in the
Cables and Connectors brochure.

43

Cable overviews
Connection to HEIDENHAIN controls

TS 248 8-pin M12
TS 260368330-xx

2)

TS 460TS 642
TS 76015-pin8-pin745454-xx

660042-xx

747400-xx

517375-xx

M12
TNC

6-pin

SE 540274543-xx

2)

7-pin

SE 64015-pin310197-xx

M23

TNC( iTNC 530)

517376-xx
633608-xx

15-pin1)1)15-pin1070795-xx
633613-xx

TS 150TS 750633611-xx
PLB 62xx
UEC 11x
UMC 11x15-pin1)

1213408-10

TS 460TS 760TS 642TT 460

UTI 1501183206-xx

1184715-10

SE 660335332-xx
M23

1073372-xx3)

TNC(> LE 4xx)
PLC

1099975-xx

M12

PLB 62xx
UEC
11x
FremdUMC 11x
Elektronik

EnDat
TS 460TS 760TT 4608-pin

1)SE 661(EnDat)8-pin
1070793-xx

15-pin823924-xx

660042-xx

823924-xx

TNC(> LE 4xx)

M12

8-pin

745894-xx

9-pin1), 2)

663631-xx

1109993-xx
633616-xx

368330-xx

PLB 62xx
UEC 3xx

 50 m(multiple are possible)

1)15-pin1070794-xx

SE 660

PLB 62xx
FremdUEC 11x
Elektronik
UMC 11x12-pin12-pinUTI 660

664211-xx

Pin layouts are identical

M121), 2)
3)15-pin1)12-pin1109993-xx(up to four TS 460/TT 460,
depends on variant)44

PLB 62xx
UEC 11x
UMC 11x12-pin664211-xx

15-pin

660042-xx

15-pin1)

 20 m1)

373289-xx

TNC

663631-xx 3)

9-pin

7-pin
TT 160 8-pin M1215-pin2)701919-xx 3)

M121279419-09

15-pin1)12-pinPLB 62xx
UEC 11x
UMC 11x663631-xx

PLB 62xx
UEC 11x
UMC 11x
PLC

Pin layouts are identical
If overall length is over 20 m: ID 663631-xx max. 10 m; the rest with ID 701919-xx/1073372-xx

45

Connection to all other controls

TS 460TS 760TS 6427-pin
SE 640M23
310193-xx

SE 540TS 460TS 760TT 460517375-xx

SE 66012-pin(up to four TS 460/TT 460,
depends on variant)M1212-pin664211-xx
1109993-xx

M12801285-xx
 20 m

TS 150TS 7501213408-10

F*/S/MUTI 150

1217425-xx

1184715-10

F*/S/M
PLC

F*/S/M

1279419-09
8-pin

TS 248TS 260368330-xx
660042-xx
747400-xx

6-pin
274544-xx
F*/S/M
1289303-xx
F/S/M

634265-xx
7-pin
TT 160 8-pin

1099975-xx

310194-xx

F*/S/M

M23
606317-xx
634265-xx
1083190-xx

373289-xx

8-pin

660042-xx
368330-xx

F/S/M = Fanuc/Siemens/Mitsubishi/Mazak, F* Fanuc High-Speed Skip over UTI 491

46

F/S/M

Mastering nanometer accuracy

DR. JOHANNES HEIDENHAIN GmbH
Dr.-Johannes-Heidenhain-Straße 583301 Traunreut, Germany +49 8669 31-0
 +49 8669 32-5061
info@heidenhain.dewww.heidenhain.com
1113984-29 · 09/2024 · H · Printed in Germany

HEIDENHAIN
worldwide