AD-4408A
Weighing Indicatorfor Field Networks
INSTRUCTION MANUAL

1WMPD4001973AWARNING DEFINITIONS
The warnings described in this manual have the following meanings:
A potentially hazardous situation which, if not avoided, could result indeath or serious injury.
A potentially hazardous situation which, if not avoided, may result inminor or moderate injury or damage to the instrument.
This symbol indicates caution against electrical shock. Do not touch
the part where the symbol is placed.

This symbol indicates the ground terminal.

This symbol indicates that an operation is prohibited.

NOTE

Information or cautions to use the device correctly.

© 2012 A&D Company, Limited. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, or translated into any
language in any form by any means without the written permission of A&D Company, Limited.

The contents of this manual and the specifications of the instrument covered by this manual are
subject to change for improvement without notice.
Anybus-CompactCom is a registered trademark of HMS Industrial Networks.

Contents
1.

Safety Precautions........................................................................................................22.

Introduction...................................................................................................................3

3.

Specifications ...............................................................................................................4
3.1. Analog Section ....................................................................................................4
3.2. Digital Section .....................................................................................................4
3.3. General ...............................................................................................................5

4.

Description of Each Part ...............................................................................................7
4.1. Front Panel .........................................................................................................7
4.2. Rear Panel ..........................................................................................................95.

Installation ..................................................................................................................105.1. Precautions .......................................................................................................10
5.2. Load Cell Cable Type........................................................................................115.3. Shield Connection .............................................................................................115.4. Load Cell Connection........................................................................................125.5. Checking the Load Cell Connection ..................................................................135.6. Interface Module Installation .............................................................................14

6.

Operation....................................................................................................................15
6.1. General Function...............................................................................................15
6.2. Mode Map .........................................................................................................18

7.

Calibration ..................................................................................................................19
7.1. General Description ..........................................................................................19
7.2. Calibration With an Actual Load (Cal5et).........................................................20
7.3. Calibration-Related Functions (Calf)................................................................22
7.4. Calibration Errors ..............................................................................................28
7.5. Load Cell Output Adjustment ............................................................................29

8.

General Functions ......................................................................................................30
8.1. Setting Procedure .............................................................................................30
8.2. Adjusting the Digital Filter .................................................................................318.3. Basic Functions (fncf) .....................................................................................32
8.4. Standard Serial Output (Cl f) ..........................................................................33

9.

Interface......................................................................................................................34
9.1. Standard Serial Output......................................................................................34

10. Maintenance ...............................................................................................................37
10.1. Error Messages...............................................................................................37
10.2. Check Mode ....................................................................................................37
10.3. Initialization Mode ...........................................................................................41
10.4. Checking the Load Cell Connection Using the Digital Multimeter ...................43
11. Setting List..................................................................................................................45
11.1. Basic Functions...............................................................................................45
11.2. Standard Serial Output....................................................................................46
11.3. Calibration-Related Functions .........................................................................47
12. External Dimensions...................................................................................................49
Page 1AD-4408A

1. Safety Precautions
For safe and correct usage, read the following precautions carefully before using theindicator.
Groundinglocated on the rear
Earth ground the indicator by connecting the earth ground terminal
panel to the earth, to prevent a fire, electrical shock or indicator malfunction.
Do not share the ground line with other electrical power equipment.
Appropriate power cable
Use a power cable appropriate to the supply voltage and current used. Using an
inappropriate cable may cause electrical leakage or a fire.
Connect the power cable to the terminals firmly using compression lugs.
Fuse replacement
A fuse is provided to protect against a short circuit and possible fire hazard.
The indicator is equipped with various protection circuits and the fuse should not burn out
under normal operations.
If the fuse burns out, the internal circuits may have been damaged by surges. Do not try toreplace the fuse. Contact the nearest A&D dealer.
Avoid water and moisture
The indicator is not water-resistant.
Securing the front panel to the control panel using the accessory panel mount packing will
provide the indicator with IP-65 protection.
Avoid an environment with flammable gases
Do not use the indicator in places where flammable gases are present.
Indicator overheat
To prevent the indicator from overheating, allow appropriate clearance between the
peripheral devices.
If the ambient temperature exceeds the specified operating temperature, use a fan to cool
the environment.

AD-4408A

Page 2

2. Introduction
The AD-4408A is a weighing indicator that amplifies signals from a load cell,converts it to digital data and displays it as a weight value.
Connection to various field networks is possible by installing the interface module
into the option slot.
• For details on applicable field networks, visit our website.
• Download the instruction manual for each interface from our website. (Memory
map and check modes vary with the interface.)• The interface module used is the Anybus-CompactCom network interface module,
manufactured by HMS Industrial Networks.
• The interface module is available as an accessory for the AD-4408A. Purchasethe interface module from A&D, or directly from an iterface module supplier.
The accessory panel mount packing will provide the indicator with IP-65 protection.
This indicator has the following performance:
Input sensitivity: ......................... 0.15 μV /d
Display resolution: ..................... 999,999 d max.
Sampling rate:............................ 100 times/second
Input voltage range: ................... -35 mV to +35 mV (-7 mV/V to +7 mV/V)
Digital span mode:
Keying in the load cell output voltage (mV/V) allows calibration to be performed
without an actual load.

NOTE: The unit, d indicates a minimum division.

Page 3AD-4408A

3. Specifications
3.1.

Analog Section

Input sensitivity
Input voltage range
Zero adjustment range
Load cell excitation voltage
Load cell drive capacity
Temperature Zerocoefficient Span
Non-linearity
A/D conversion method
A/D resolution countDisplay resolution
Sampling rate

3.2.

0.15 μV/d or greater-35 mV to +35 mV (-7 mV/V to +7 mV/V)-35 mV to +35 mV (-7 mV/V to +7 mV/V)
5VDC 5%, 120 mA with remote sensing capability
Maximum 8 x 350 Ω load cells
0.02 μV /°C typ., 0.1 μV /°C max.
3ppm /°C typ., 15ppm /°C max.
0.005 % of full scale
Delta-sigma method
Approximately 16,000,000 counts
999,999 d max.
100 times/second

Digital Section

Display element

Measurement display

Status indicators
Key switches

AD-4408A• Measurement display: 6-digit 7-segment green LED• Character height: 14.6 mm• Polarity display: 1 green LED• Status indicators: 6 red LEDs
• Switches between NET and GROSS• Selectable decimal places (101, 102, 103, 104, 105)
• Overflow display
All the digits turn OFF. (When the polarity is negative, theminus sign appears at the highest-order digit.)
ZERO, STABLE, GROSS, NET, HOLD,
ZERO, TARE, NET/GROSS, F, ON/OFF, ENTER, CAL

Page 4

3.3.

General3.3.1. Interface
Standard serial output
Option slot

Output for communication with A&D peripheral devices(20 mA current loop)
Connection to various field networks is possible by installingthe interface module into the option slot. For details on
applicable field networks, visit our website.

3.3.2. Measuring functions

Zero adjustment

Zero tracking

TareStability detection

Digital filter• Sets the gross weight to zero by pressing the ZERO key.
• Selection of disable or enable for the operation when
unstable.
• The zero value is stored in the non-volatile memory.
• Zero adjustable range
Can be set optionally in the range of 1 to 100% of theweighing capacity.
• Tracks the weight drift around the zero point to maintainzero.
• Zero tracking time
0.0 to 5.0 seconds (Can be set optionally within the range.)• Zero tracking band
0.0 to 9.9 d (Can be set optionally within the range.)• Sets the net weight to zero by pressing the TARE key.
• Selection of disable or enable for the operation when
unstable or negative.
• The tare weight is stored in the non-volatile memory.
• Tare range: Gross weight ≤ Weighing capacity• Turns ON the stabilization indicator when the variables of
the weight values per sampling are within the set band in
the set time.
• Stability detection time
0.0 to 9.9 seconds (Can be set optionally within the range.)• Stability detection band
0 to 9 d (Can be set optionally within the range.)
Cutoff frequency range (-3dB) : 0.07 to 11 Hz

Page 5

AD-4408A

3.3.3. Other

Power source
Power consumption
Operating temperature
Operating humidity
Installation method
Mass• Zero value, tare weight, calibration data and function data
are written into the FRAM.
• Data retention time is 10 years or more.
100 VAC to 240 VAC, +10%, -15%, (50/60 Hz)
Approximately 10 VA-10°C to +40°C
85% R.H. or less (no condensation)
Panel mount
Approximately 800 g

3.3.4. Accessories
Item
Weighing capacity plate
Unit label
Panel mount packing
Terminal block cover

Quantity1111Data backup
against power failures

AD-4408A

Model name108-4023454
108-4023456
106-4004213
107-4005384

Page 6

4. Description of Each Part
4.1.

Front Panel

Fig.1 Front panel
DisplaysNo.
Name
1 Main display
2 ZERO
3

STABLE

4
5

GROSS
NET

6

HOLD

7
8

UNIT

9

Capacity
plate

Description
Displays the weight value, setting values, error messages, etc.
Turns ON when the weight value is in the center of zero.
• Turns ON when the weight value is stable.
• The stability conditions can be changed in the calibration-related
functions.
Turns ON when the displayed value is a gross weight.
Turns ON when the displayed value is a net weight.
• Turns ON when the weight value is being held.
• Two hold modes can be selected in the general functions, either
normal hold or peak hold.
The function for this indicator can be selected in the generalfunctions, depending on the purpose.
• Place a unit label.
• A unit used for weighing is set in the calibration-related functions.
Place a weighing capacity plate.

Page 7

AD-4408A

Key switches
No.
Name
10

CAL

11

ON/OFF
ESC

12

ENTER

Net/B/GNET GROSS

15

TARE

16

ZERO

17

Seal

AD-4408A• The key to proceed to the selected mode.
• Confirms the setting value and stores the data when pressed
after a setting is changed.
• The function for this key can be selected in the generalfunctions, from the list below:
None
Manual print command
Hold
Alternate switch
Momentary switch
Clear the tare weight
Clear the zero value• The key decreases the value of the blinking digit by one when
the numerical values are being entered.

13

14

Description• The key to enter the calibration mode.
• The key is concealed by a sealable cover.
To avoid unintentional operations, keep the cover attachedexcept when entering the calibration mode.
• The key to turn the indicator ON (Weighing mode) and OFF (OFFmode).
• To turn the indicator OFF (OFF mode), press and hold the key
for three seconds or more.
• When OFF, all of the displays and external output/input devices
are turned OFF, but a decimal point located at the right side of
the main display remains ON.
• The key functions as an ESC key when the numerical values
are being entered.

• The key to switch between the gross weight and the net weight.
• The key increases the value of the blinking digit by one when
the numerical values are being entered.
• The key to perform tare.
• The tare conditions are set in the calibration-related functions.
• The key shifts the position of the blinking digit to the right when
the numerical values are being entered.
• In the OFF mode, pressing the ON/OFF key while holding down
the TARE key will clear the zero value and the tare weight.
• The key to zero the current display.
• The zero conditions are set in the calibration-related functions.
• The key shifts the position of the blinking digit to the left when
the numerical values are being entered.
• Can be sealed using a wire seal.

Page 8

4.2.

Rear Panel
2

3

4
4

1
Fig.2 Rear panel
1

Terminal block
Terminal No.
1
EXC+
2
SEN+
3
SEN4
EXC5
SIG+
6
SIG7
SHLD
8
C.L.
9
C.L.
10
F.G.
11
12
13

Function
Load cell excitation voltage (+)
Sensing input (+)
Sensing input (-)
Load cell excitation voltage (-)
Load cell input (+)
Load cell input (-)
ShieldStandard serial output (Current loop)
Standard serial output (Current loop)
Frame ground
Earth groundAC power source
AC power source

Load cellconnection

NOTE: Terminals 7 (SHLD) and 11 (E) are internally connected.
To avoid unintentional operations, keep the cover attached on the terminal block.
Screw size: M3, tightening torque: 0.5N･m
2 Blank panel
Option slot inside to install the interface module.
3

Testing terminal
Do not use, leave this terminal unconnected.

4

Sealing bolts
Can be sealed with a wire seal.
Page 9AD-4408A

5. Installation
The weighing indicator is a precision electronic instrument. Handle it
carefully.

5.1.

Precautions

5.1.1. Environment
The operating temperature is -10°C to +40°C.
Do not install the indicator in direct sunlight.
The indictor is not water-resistant. When used in an environment where theindicator may be exposed to splashing water, secure the front panel to the control
panel using the accessory panel mount packing. It makes the front panel
water-resistant equivalent to IP-65.

Panel mount packing

Guide rail

Control panel

Washer Screw

Fig.3 Panel mounting method

AD-4408A

Page 10

5.1.2. Power source
Earth ground the indicator to prevent electrical shock orindicator malfunction.
Before connecting the indicator to the power source, read the instruction manual
thoroughly.
Do not connect the indicator to the power source before the installation is complete.
To avoid electrical shock, do not handle the power cable with a wet hand.
Earth ground the indicator. Do not share the ground line with other electrical power
equipment.
The power requirement is 100 VAC to 240 VAC and the frequency is 50 Hz or 60 Hz.
Use a stable power source free from instantaneous power failure or noise.
To avoid a malfunction, do not share the power line with other devices.
The output voltage of a load cell is a very sensitive signal. Keep all electrical noise
sources away from the load cell and load cell cable.
Use shielded I/O cables. Connect the cable shield to the F.G. terminal or theindicator housing.

5.2.

Load Cell Cable Type

Load cell cables should have high insulation and shielding performance.
Use shielded cables with the insulator that is made of materials with high insulation
resistance such as Teflon® and polyethylene.
NOTE: Teflon is a registered trademark of DuPont.

5.3.

Shield Connection

Connect the load cell shield wire only to the shield terminal (terminal 7 of the terminal
block located on the rear panel) of the AD-4408A.
No ground is connected between the load cell and the AD-4408A. This is to prevent the
ground loop generated by multiple ground points. Gound loop can be a major cause ofnoise and interference.

Page 11

AD-4408A

5.4.

Load Cell Connection

Two types of load cell connection are available: 6-wire connection and 4-wireconnection.
For high precision and stable weighing, 6-wire connection is recommended.

(A) 6-wire connection(B) 4-wire connection
Fig.4 Load cell connection

AD-4408A

Page 12Type

Advantages
The error is smalleven when the loadcell cable is
6-wire connection
extended, a thin load(recommended)
cell cable is used, or
multiple load cells
are used.

Disadvantages

Use a 6-wireshielded cableComplicated wiringwhen a summingbox is used.
The influence ofthe load cell cable
resistance worsens
the temperature
coefficient.
Prone to the
influence of thecontact resistanceof the connector

4-wire connection Simple wiring

Description

The error
increases when
the load cell cableis extended or
multiple load cells
are used.

Precautions on performing the 4-wire connection
Be sure to connect terminals 1 and 2 (EXC+ and SEN+) and terminals 3 and 4(SEN- and EXC-).
If the cable needs extending, use a cable with as large a cross-sectional area as
possible or keep the cable as short as possible.

5.5.

Checking the Load Cell Connection

When the load cell connection is complete, follow the procedure below to check theconnection.
Step 1 Perform a visual check to ensure that the wiring is correct.
Step 2 Turn the AD-4408A ON.
All the digits may be OFF before calibration. Even under such a condition, thecheck mode can be used.
Step 3 Enter the check mode and check the load cell output value.
Refer to “10.2.1. Entering the check mode” to enter the A/D check mode.
Step 4 Confirm that the displayed load cell output value matches the specified value.
Normally the displayed value will be the load cell rated output value or less.
Step 5 If an error occurs, refer to “10.4. Checking the Load Cell Connection Using theDigital Multimeter” to check the connection.
Page 13

AD-4408A

5.6.

Interface Module Installation

Be sure to disconnect the AD-4408A from the power source before
installing the interface module.
Install the interface module as follows:
Step 1 Using a Phillips screwdriver,loosen the screws that secure
the blank panel to theAD-4408A rear panel, andremove the blank panel.
Step 2 Insert the interface module
into the option slot as shown
to the right.
Step 3 Insert the interface module
until it mates with the terminalsof the PC board connector
located in the option slot.

Step 4 Using a TORX® driver (size
T9), fasten the retaining
screws with a tightening
torque of 0.25 N ･m in theclockwise direction to secure
the interface module.

Fig.5 Interface module installation

NOTE: A TORX® driver is not provided with the AD-4408A.
TORX is a registered trademark of Textron Inc.

AD-4408A

Page 14

6. Operation
6.1.

General Function

6.1.1. Zero adjustment
Zero adjustment is a function to set the gross weight to zero. It is performed bypressing the ZERO key.
The zero adjustment range is set in Calf05 (zero adjustment range) and isexpressed in percent of the weighing capacity with the calibration zero point as thecenter.
Zero adjustment is disabled, even within the zero adjustment range, when the A/D
converter overflow occurs.
A ZERO error is output if zero adjustment is not performed.
The zero value is stored in the non-volatile memory and is maintained, even if thepower is disconnected.
Clearing the zero value is performed using the F key assigned to clear the zero value.
Alternately, apply power to the indicator while holding down the TARE key, or with
the indicator in the OFF mode, press and hold the TARE key and press the ON/OFF
key, to clear the zero value.
Functions related to zero adjustmentz Calf05: Changes the zero adjustment range. (0 to 100%)z Calf10: Enables or disables zero adjustment when unstable.
z Calf16: Enables or disables power-ON zero (function to zero upon power-ON).
6.1.2. Zero tracking
Zero tracking is a function to track the weight drift around the zero point to maintainzero.
The zero tracking time is set in Calf06 (zero tracking time) and the zero tracking
band is set in Calf07 (zero tracking band). When the weight drift is within thespecified ranges, zero adjustment is performed automatically.
A ZERO error is not output even if zero tracking is not performed.
Functions related to zero trackingz Calf06: Changes the zero tracking time. (0.0 to 5.0 seconds)z Calf07: Changes the zero tracking band. (0.0 to 9.9 d)Page 15

AD-4408A

6.1.3. Tare
Tare is a function to store the gross weight as the tare value and set the net weight to zero.
The tare weight is stored in the non-volatile memory and is maintained, even if thepower is disconnected.
Clearing the tare weight is performed using the F key assigned to clear the tare weight.
Alternately, apply power to the indicator while holding down the TARE key, or with
the indicator in the OFF mode, press and hold the TARE key and press the ON/OFF
key, to clear the tare weight.
Functions related to tarez Calf10: Enables or disables tare when unstable.
z Calf11: Enables or disables tare when the gross weight is negative.
6.1.4. F key
Assign a function to the F key in the general functions.
Functions related to the F key
zfncf02: Assigns a function to the F key from the functions below:
0: None1: Manual print command
2: Hold
3: Alternate switch (Read the description below.)
4: Momentary switch (Read the description below.)
5: Clear the tare weight
6: Clear the zero value
zCalf15: Enables or disables clearing the zero value.
zCalf20: Enables or disables the print command when the gross weight is negative.
Alternate switch and momentary switch
zBy assigning these switches to the F key, the ON/OFF status of the F key can betransmitted to the master station. This is useful when building a network or
performing maintenance.
zBy selecting “3: F key status” for fncf04 ( display), the ON/OFF status of the F
key can be confirmed by the memory in sync with the  display.
zThese switches perform as below:
Alternate switch
Press the switch once and release the switch to turn ON or OFF.
Press the switch again to turn OFF or ON.
Momentary switch
Only when the switch is being pressed, the F key is ON. When released, OFF.

AD-4408A

Page 16

6.1.5.  display
Assign a function to the  display in the general functions.
Functions related to the  display
zfncf04: Assigns a function to the  display from the functions below:
0: None
1: Zero tracking in progress
2: Alarm (Zero range setting error, over)
3: F key status (Read the description below.)
F key statuszEnables when alternate switch or momentary switch is selected for fncf02 (F key).
The  display turns ON when the F key is ON and turns OFF when the F key is OFF.
6.1.6. Memory backup
Zero value, tare weight, calibration data and function data are written into the FRAM.
FRAM is a non-volatile memory and does not require batteries.
Data retention time is 10 years.

Page 17

AD-4408A6.2.

Mode Map

The indicator has several modes to perform various operations.
Perform mode switching by key operation as shown below, only in the direction of thesolid arrow.
After setting a mode, the indicator resets automatically. Alternately, the indicator resets,
when the power is disconnected.
Automatic reset after setting

Power ON
Weighing
mode
Switch using
the ON/OFF key

See the note
below.

OFF
mode

NOTE: When the power isdisconnected while in
the OFF mode, theindicator will start in
the OFF mode whenpower is re-connected.

Generalfunction modeEnter using the key combination
ENTER + F
MaintenancemodeEnter using the key combinations
ENTER + F
and thenZERO + ENTER
Calibration
mode

Initialization
mode
Calibration using
an actual load
Calibration-related
function modeEnter using the CAL key
All data
initialization mode

Fig.6 Mode map

AD-4408A

Check
mode

Page 18

7. Calibration
7.1.

General Description

In the calibration mode, the operation to relate the output voltage from a load cell to theweight value and other operations directly related to weighing are performed.

Calibration with anactual load

Calibration-related
function

Digital span

All data initialization

Calibration is performed using a calibration weight.
• Zero calibration: Adjusts the indicator so that themeasured value will be zero when noload is applied to the load cell.
• Span calibration: Enter the calibration weight value andplace the calibration weight on the loadcell.
When the indicator enters the mode of calibration with anactual load, the tare weight and the zero value will be
automatically cleared.
Setting basic constant values of the indicator such as theminimum division and weighing capacity and other data
directly related to weighing is performed.
Setting the parameters for digital span calibration is also
performed.
Calibration is performed without an actual load, by keying in
the load cell output voltage (mV/V).
• Input voltage at zero: Key in the load cell output at zero.
• Input voltage at span: Key in the load cell output at span.
(Load cell output at full capacity – load cell output at zero)• Calibration weight value at span:
Key in the calibration weight value
corresponding to the input voltage at
span.
(The input voltage at span is related to the weight value.)
Clears all the data such as zero value, tare weight,
calibration data and function data.

NOTE: All the data set in the calibration mode is stored in the FRAM.

Page 19

AD-4408A

7.2.

Calibration With an Actual Load (Cal5et)

Calibration is performed using a calibration weight
Before performing calibration for the first time, set the unit, decimal point position,
minimum division and weighing capacity in the calibration-related function mode.
NOTE: To avoid drift caused by changes in temperature, warm up the indicator forten minutes or more before performing calibration with an actual load.
Step 1 Press the ON/OFF key to turn the indicator ON (weighing mode) if it is in the
OFF mode.
Remove the CAL key cover and press the CAL key.
CalL is displayed to indicate that the indicator enters the calibration mode.
Step 2 Press the ENTER key to display Cal5et . The indicator enters the mode ofcalibration with an actual load. To return to the weighing mode, press the ESC
key.
Zero calibration
Step 3 Press the ENTER key to display Cal 0 .
If zero calibration is not to be performed, press the F key and go to step 5.
To monitor the current weight value, press the CAL key. Press the CAL key
again to display

CalL 0 .

Step 4 With nothing placed on the load cell, wait for the stabilization indicator to turn
ON and press the ENTER key. - - - - - - is displayed for approximately two
seconds.
If span calibration is not to be performed, press the ESC key twice to return to
the weighing mode.
Span calibration
Step 5 Press the ENTER key when Cal5pn is displayed.
The calibration weight value (the weighing capacity currently set) is displayed
and the least digit of the value blinks.
< > ∧ ∨ keys: Press to correct the value to the value of the calibration weightused.
CAL key: Press to monitor the current value (the gross weight) andpress again to display the calibration weight value.
ESC key: Press three times to return to the weighing mode without
performing span calibration.
Step 6 Place a calibration weight on the load cell. Wait for the stabilization indicator toturn ON and press the ENTER key. - - - - - - is displayed for approximately
two seconds.
AD-4408A

Page 20

Step 7

Calendis displayed. To re-adjust the span, press the F key.

Step 8 Press the ESC key.
into the FRAM.

Cal5etis displayed and the calibration data is written

Step 9 The current state is the same as that of step 2. To return to the weighing mode,press the ESC key again.

NOTE: The blinking decimal point indicates that the current value is not the weightvalue.
If C errX is displayed, an error has occurred. Refer to “7.4. Calibration
Errors” to take some measures.

Page 21

AD-4408A

7.3.

Calibration-Related Functions (Calf)

Step 1 Press the ON/OFF key to turn the indicator ON (weighing mode) if it is in the
OFF mode.
Remove the CAL key cover and press the CAL key.
Cal

is displayed to indicate that the indicator enters the calibration mode.

Step 2 Press the ENTER key to display Cal5et . The indicator enters the mode ofcalibration with an actual load. To return to the weighing mode, press the ESC
key.
Step 3 Press the ∧ or ∨ key to selectCalfF

and press the ENTER key.

Step 4 Press the ∧ or ∨ key to select a function number to be used and press the
ENTER key. The current setting value is displayed.
Step 5 Change the value as necessary. Two methods to change are available,
depending on the function number as below
MethodSelecting a parameter

Inputting the value

Description
Only the available parameter is displayed and blinks.
Press the ∧ or ∨ key to select a parameter.
All the digits are displayed and a digit to be changed
blinks.
Press the < or > key to select a digit andpress the ∧ or ∨ key to change the value.

After setting, press the ENTER key. The next function number is displayed.
When the value is not to be changed, press the ESC key to return to thefunction number display.
Step 6 Press the ESC key.
Cal5etis displayed and the data of thecalibration-related functions is written into the FRAM.
Press the ESC key again to return to the weighing mode.
NOTE: The blinking decimal point indicates that the current value is not the weightvalue.
If a value exceeding the settable range is entered, err dt is displayed andthe input is canceled.

AD-4408A

Page 22

Function No.
Parameter or
Setting range

Calf01
0 to 4

Calf020 to 5

Calf03
1 to 6

Calf04
1 to 999999

Calf050 to 100

Function

Default
value

Description

Unit of the weight value
0: None
1: g
Unit
2: kg
3: t
4: lb (USA version)
Decimal point position of the weight value
0: None 123456
1: 10112345.6
Decimal2
2: 101234.56
point
3
position
3: 10
123.456
4
4: 10
12.3456
5
5: 10
1.23456
Minimum division (d) of the weight value
1: 1
2: 2
Minimum
3: 5
division
4: 10
5: 20
6: 50
Weighing capacity of the weighing
instrument
Weighing is possible up to the value of thisWeighing
setting plus 8 d. If the value exceeds this,capacity
overflow will occur and will not be
displayed.
The decimal point position is the same as
the setting of Calf02.
Range to enable zero adjustment by theZERO key
Expressed in percent of the weighing
capacity with the calibration zero point as
Zero
the center, when performing power-ON
adjustment
zero, with the initial zero point as thecenter.
range
For example, if this is set to 2, the value inthe range of ±2% of the weighing capacitywith the calibration zero point at the center
will set to zero.

Page 23

2

0

1

20000

2

AD-4408A

Function No.
Parameter or
Setting range

AD-4408A

Function

Calf06
0.0 to 5.0

Zerotrackingtime

Calf07
0.0 to 9.9

Zerotrackingband

Description
Performs zero tracking using this setting in
combination with the setting of the zero
tracking band.
When 0.0, zero tracking will not be
performed.
Unit: second in 0.1 increments
Performs zero tracking using this setting in
combination with the setting of the zero
tracking time.
When 0.0, zero tracking will not be
performed.
Unit: d (minimum division) in 0.1 increments

Page 24

Default
value

0.0

0.0

Function No.
Parameter or
Setting range

Function

Calf080.0 to 9.9

Stability
detection
time

Calf090 to 9Stability
detection
band

Default
value

Description
Performs stability detection using this setting
in combination with the setting of the stability
detection band.
When 0.0, stability detection will not be
performed. (Stable all the time)
Unit: second in 0.1 increments
Performs stability detection using this setting
in combination with the setting of the stability
detection time.
When 0, stability detection will not be
performed. (Stable all the time)
Unit: d (minimum division)

1.0

2

Stability detection outputs the STABLE signal when changes in
the weight value are within a certain range during a certain time.

Weightvalue

CALF09

CALF08

CALF09
CALF08STABLEsignalCalf100 to 1
Calf11
0 to 1
Calf120 to 1

Tare andzero
adjustment
when
unstable
Tare when
the grossweight is
negative
Outputwhen
overflowandunstable

Tare and zero adjustment when the weightvalue is unstable.
0: Disables both functions.
1: Enables both functions.

1

Tare when the gross weight is negative.
0: Disables tare.
1: Enables tare.

1Standard serial output when the weight value
overflows and is unstable.
0: Disables output.
1: Enables output.

1

Page 25

AD-4408A

Function No.
Parameter or
Setting range

Calf13
1 to 3

Calf14
1 to 2

Calf150 to 1
Calf160 to 1
Calf17-7.00000 to
7.00000
Calf180.00001 to
9.99999

Calf191 to 999999

AD-4408A

Function

Description

Default
value

Condition to judge over when the grossweight is negative.
Over at
A/D negative over or1negative
1: Gross weight < -999999
gross weight
2: Gross weight < negative weighing capacity
3: Gross weight < -19 dCondition to judge over when the net
weight is negative.
Over atGross weight negative over or1negative net
weight1: Net weight < -999999
2: Net weight < negative weighing capacity
Select whether or not to clear the zero
Clear the zero value.
1
0: Disables.
value
1: Enables.
Select whether or not to perform zero
upon power-ON.
Zero upon0
0: Disables.
power-ON
1: Enables.
Input voltage from a load cell at zero.
Unit: mV/V
Input voltage
In zero calibration during the calibration 0.00000
at zerowith an actual load, this value isdetermined.
Input voltage from a load cell at span
Unit: mV/V
Input voltage
In span calibration during the calibration 2.00000
at spanwith an actual load, this value and thevalue of Calf19 are determined.
The calibration weight value corresponding
Calibration
to the Input voltage at span of Calf18.
weight value
corresponding When performing digital span, Calf17,
20000
to Input
18 and 19 are required.
voltage at
The decimal point position is the same as
span
the setting of Calf02.

Page 26

Inputvoltage

CALF18
CALF17
CALF190
Displayed
weight0

NOTE: Record the setting values of Calf17, 18 and 19 in the “Setting List” atthe end of the manual to prepare against a failure.
By changing the parameters of Calf17, 18 and 19, “zero calibration”
and “span calibration” can be adjusted optionally. (Digital span
accuracy approx. 1/5000: The accuracy varies depending on the loadcell output accuracy and the conditions of calibration.)
Except for an emergency, perform calibration with an actual load.

Calf200 to 1

Output when
the gross weightis negative

Calf21
0 to 1

Communication
restriction

Calf22
1 to 2Header 2

Output by the manual print command when
the gross weight is negative.
0: Enables output.
1: Disables output.
Restriction on network-related
communication such as changing station
numbers or ID numbers and outputting byauto printing
0: Disables restriction.
1: Enables restriction.
Second header for serial output
1: GS / NT / TR
2: G_ / N_ / T_ (_ space)

Page 27001AD-4408A

7.4.

Calibration Errors

When an error occurs during calibration, the error number is displayed.
If calibration is finished without releasing the error, the setting values will be restored tothe state before calibration.
Calibration errors and remedies
Error No.

Description

C err1

The
display
resolution(weighingcapacity / minimum division) exceeds
the specified value.

C err2

Voltage at zero calibration exceeds inthe positive direction.

C err3

Voltage at zero calibration exceeds inthe negative direction.

C err4The value of the calibration weight
Use an appropriate
exceeds the weighing capacity.
calibration weight and
The value of the calibration weight is calibrate again.
less than the minimum division.
Use a load cell with higher
The load cell sensitivity is not sufficient. sensitivity or make theminimum division greater.
The load cell output voltage is too high Use a load cell with awhen the load of the weighing capacity greater rating or make theis placed.
weighing capacity smaller.
Voltage at span calibration is less than Check
the
load
cell
voltage at the zero point.
connection.

C err5C err6
C err8C err7

AD-4408A

Page 28

RemedyMake the minimum division
greater or make theweighing capacity smaller.
The specified value
depends on the instrument
or specifications.
Check the load cell rating
and connection.
When nothing is wrong withthe rating and connection,
adjust the load cell output
as described in the next
section.
When the load cell or A/D
converter may be the causeof error, confirm it by using
the check mode.

7.5.

Load Cell Output Adjustment

Add a resistor as shown below to adjust the load cell output.
Use a resistor with a high resistance value and a low temperature coefficient.

SIG-"C Err 3"
When exceeding in the negative direction)

EXC+

EXC+

r
to
is
es d
R dd eaRead sisde tord"C Err 2"(When exceeding in the positive direction)

SIG+

SIG-

EXC-

SIG+

EXC-

Fig.7 Load cell output adjustment

NOTE: As the zero adjustment range of the AD-4408A is wide, output adjustment israrely required for the normal load cell.
Before adjusting the load cell output, check the load cell (deformation,clearance around the load cell, incorrect wiring and load cell type) and loadcell connection.

Page 29

AD-4408A

8. General Functions
General functions are divided into groups per function and are indicated by the groupname with the function number.
NOTE: General functions determine the AD-4408A performance and all of thesettings are stored in the FRAM.

8.1.

Setting Procedure

Step 1 While holding down the ENTER key, press the F key.
fnc is displayed to indicate that the indicator will enter the general function
mode.
Step 2 Press the ENTER key. The indicator enters the general function mode.
To return to the weighing mode without entering the general function mode,press the ESC key.
Step 3 Press the ∧ or ∨ key to select the function group to be set.
DisplayGroup name
Basic function
fncf

Cl f
∗∗∗f
∗∗∗f
∗∗∗f

Standard serial output
Interfaces
Refer to the instruction manual for each interface,
available on our website.

Press the ENTER key. The function number will be displayed.
Step 4 Press the ∧ or ∨ key to select the function number to be set.
Press the ENTER key. The current setting value will be displayed.
Step 5 Change the setting value using either one of the methods below.
MethodSelecting a parameter

Inputting the value

Description
Only the available parameter is displayed and blinks.
Press the ∧ or ∨ key to select a parameter.
All the digits are displayed and a digit to be changed
blinks.
Press the < or > key to select a digit andpress the ∧ or ∨ key to change the value.

After setting, press the ENTER key. The next function number is displayed.
When the parameter is not to be changed, press the ESC key to return to thefunction number display.

AD-4408A

Page 30

Step 6 Press the ESC key. The function number disappears and the indicator returns tothe state of step 3.
Press the ESC key to store the setting values in the FRAM and return to theweighing mode.
NOTE: The blinking decimal point indicates that the current value is not the weightvalue.
If a value exceeding the settable range is entered, err dt is displayed andthe input is canceled.

8.2.

Adjusting the Digital Filter

Adjust the digital filter using fncf05 (Digital filter) and fncf06 (Frequency divider
ratio).

Method 1

While fncf06 is fixed to 1 (divider ratio 1), adjust fncf05.
Cutoff frequency: 11.0 Hz to 0.7 Hz

Method 2

If Method 1 does not work, perform as follows:
While fncf05 is fixed to 8 (1.0 Hz), adjust fncf06.
Cutoff frequency: 0.5 Hz to 0.1 Hz

Digital filter cutoff frequency =fncf05 cutoff frequency
fncf06 divider ratio

High cutoff frequency
Low cutoff frequency
High response speed⇔ Low response speed
Prone to external disturbanceLess prone to external disturbance

Page 31

AD-4408A

8.3.

Basic Functions (fncf)
Function No.
Parameter or
Setting range

Ffncf01
000000 to

111111

Function

Disablekey switch

Each digit of the setting corresponds to a key
switch. Only available in the weighing mode.
0: Does not disable the key switch function.
1: Disables the key switch function.
000000(binary)
Key assignment to each binary digit
6th
5th
4th
3rd
2nd
1st
ZERO

fncf020 to 6

F key

fncf03
1 to 3

Display
updaterate

fncf040 to 3AD-4408A

display

Default
value

Description

TARE

Net/B/GNET GROSS

ON/OFF
ESC

ENTER

Assigns a function to the F key.
0: None1: Manual print command
2: Hold
3: Alternate switch
4: Momentary switch
5: Clear the tare weight
6: Clear the zero value
NOTE: Clearing the zero value can be
enabled or disabled by Calf15
1: 20 times/second
2: 10 times/second
3: 5 times/second
Assigns a function to the display.
0: None
1: Zero tracking in progress
2: Alarm (Zero range setting error, over)
3: F key status
Selects a cutoff frequency.
0: None1: 11.0 Hz
2: 8.0 Hz
3: 5.6 Hz
4: 4.0 Hz
5: 2.8 Hz
6: 2.0 Hz
7: 1.4 Hz
8: 1.0 Hz
9: 0.7 Hz

fncf050 to 9

Digitalfilter

fncf06
1 to 10Frequency
Divides digital filter cutoff frequency by thedividersetting.
ratio

fncf071 to 2Hold

1: Normal hold
2: Peak holdPage 32

0

1

0

8

1
1

8.4.

Standard Serial Output (Cl f)
Function No.
Parameter or
Setting range

Function

Cl f01
1 to 5

Outputdata

Cl f02
1 to 3Datatransfermode

Cl f03
1 to 2

Baud rate

Cl f040 to 99

ID number

Default
value

Description
1: Displayed weight
2: Gross weight
3: Net weight
4: Tare weight
5: Gross/Net/Tare
1: Stream
2: Auto printing (Note 1)
3: Manual printing
1: 600 bps
2: 2400 bps
Adds an ID number to the standard serial
output. (Note 2)
0: Does not add an ID number.
1:
⏐
99:

1

1
2

0

NOTE: When “1: Enables restriction” is selected for Calf21 (Communication
restriction):(Note 1) Auto printing will not be performed even if auto printing
conditions are met.
(Note 2) ID numbers can not be changed.

Page 33

AD-4408A

9. Interface
9.1.

Standard Serial Output

The standard serial output with 0 to 20 mA can be connected to a device such as an
A&D printer or remote display. The interface has no power source. Therefore, theexternal devices to be connected must have a power source. The setting values of thestandard serial output are changed in the general functions Cl f01 to Cl f04.
Type
Data bits
Start bit
ParityStop bit
Baud rate
Code

0 to 20 mA current loop
7 bits1 bit
1 bit, even
1 bit
600, 2400 bps
ASCII

9.1.1. Connection
Standard
serial output

Standard
serial output

Internal circuit

Frame ground

8

9

C.LOOP
outputterminal

10

No polarity

C.L.

F.G.

Fig.8 Standard serial output pin connection
Fig.9 Standard serial output internal circuit
NOTE: The standard serial output connection has no polarity.
When a shielded cable is used, connect the shield to the F.G. terminal.

AD-4408A

Page 34

9.1.2. Output data
The data format used is A&D standard format. This is a format to be used with an A&D
printer or remote display and consists of two headers, data, unit and a terminator.
A&D standard format

Header 1

Header 2
Separator

Data (ASCII code)

Unit (five types)

Terminator

ASCII code
ST
US
OL
GS
NT
TR
,
0 to 9+SP (space)
.
SP SP
SP g
kg
SP t
lb
CR
LF

Hexadecimal[53 54][55 53][4F 4C][47 53][4E 54][54 52][2C][30 to 39]
[2B]
[2D]
[20]
[2E]
[20 20][20 67][6B 67][20 74][6C 62][0D][0A]

Description
StableUnstable
Overload
Gross weight
Net weight
Tare weight

No unitgkgtlb (USA version)

A&D standard format examples

Gross weight
Net weight
Tare weight
Data with a decimal point
Positive overflow
Negative overflow
Unstable data
“Output OFF” data
NOTE: The decimal point position is the same even when overflow occurs.
Page 35

AD-4408A

9.1.3. Data transfer mode
Three data transfer modes are available; stream, auto printing and manual printing.

Stream mode

Auto printing mode

Manual printing mode

Transmits data in sync with the display update rate. If
the indicator can not catch up with the update rate
because of the baud rate, the transmission is paused
until the next updating.
The transmitted data is the same as what is being
displayed. Data that is not displayed is nevertransmitted.
Transmits data once only when the weight value with
5 d or greater is stable.
For another transmission, the weight value must fall
below 5 d once.
Transmits data when the F key, assigned as the
manual print command, is pressed.

Functions related to the data transfer modez Cl f04: Adds an ID number to the standard serial output.
The example below is when an ID number is added.
@ 0 9 S T , G

S ,

+ 0

1 2

3 .

4 5

k g CR LF

ID numberz Calf20: Enables or disables the print command when the gross weight is negative.
z Calf22: Changes header 2 to G, N or T.

AD-4408A

Page 36

10. Maintenance
10.1.

Error Messages

If an error message is displayed, refer to the chart below to take proper measures.
Error message

C5 errad errra errfraerrCalerrC errXerr dt

10.2.

Cause
RemedyProgram checksum error
Repair is required.
Data can not be acquired
Repair is required.
from the A/D converter.
Data can not be written into
Repair is required.
the backup memory.
Perform initialization.
Correct data can not be
If initialization does not clear theread from the FRAM.
error, repair is required.
Calibration data is not
Perform calibration.
correct.
Calibration error
Refer to “7.4. Calibration Errors”.
The setting value is out of Check the setting value and set
the settable range.
again.

Check Mode

The check mode checks the performance of the display, key switches and external I/O.
10.2.1. Entering the check mode
Step 1 While holding down the ENTER key, press the F key.
fnc is displayed to indicate that the indicator will enter the general functionmode.
To return to the weighing mode, press the ESC key.
Step 2 While holding down the ZERO key, press the ENTER key.
1Chc is displayed to indicate that the indicator will enter the check mode.
Press the ENTER key again to display an item to be checked.
Step 3 Press the ∧ or ∨ key to select the item to be checked and press the ENTER key
to enter the check mode of the selected item.
To exit from the current mode, press the ESC key.

Page 37

AD-4408A

Display

ChckeyChc ClChc∗∗∗
Chc∗∗∗
Chc∗∗∗
Chc r5
Chc adChc inChcpr9Chc 5nC5 pr9C5 fraCalfdtItem to be checked
Key switches
Standard serial output
Interfaces
Refer to the instruction manual for eachinterface, available on our website.
Testing terminal
A/D (Load cell)
Internal countProgram version
Serial number
Program checksum
Memory (FRAM) checksum
Calibration-related functions

10.2.2. Checking the key switches
With Chckey displayed, press the ENTER key to enter the key switch check mode. In
the key switch check mode, six squares ( ) are displayed. Each square corresponds toa key switch as shown below.
When a key switch is pressed, the corresponding square moves up ( ).
When the CAL key is pressed, the minus LED turns ON.
To exit from the key switch check mode, press the ESC key twice.

CAL

ZERO

TARE

Net/B/GNET GROSS

ON/OFF
ESC

ENTER

10.2.3. Checking the standard serial output
With Chc ClL displayed, each time the ENTER key is pressed, the test data istransmitted with the baud rate set in the general functions and the decimal point blinks.
Test data S T , G S , + 0 0 0 0 0 . 0 k g CR LF

AD-4408A

Page 380.0

10.2.4. Checking interfaces
Refer to the instruction manual for each interface, available on our website.
10.2.5. Checking the testing terminal
The Chc r5 display is for checking the testing terminal. Do not use it.
10.2.6. Checking the A/D (load cell)
With Chc ad displayed, press the ENTER key to enter the A/D check mode. The load cell
output value is displayed in mV/V.
The example below is when the internal count is 1.23456 mV/V.

1.23456
If the internal count exceeds ±7mV/V, the load cell may be damaged or the load cell may
be connected incorrectly. Refer to “10.4. Checking the Load Cell Connection Using theDigital Multimeter” to check the connection.
10.2.7. Checking the internal countWith Chc in displayed, press the ENTER key to enter the internal count check mode.
The internal count value (display value times 10) is displayed.
The example below is when the internal count is 123.

123.
10.2.8. Checking the program version
With Chcpr9 displayed, press the ENTER key to display the version of the current
program. The example below is when the program version is 1.00.

p001.00
10.2.9. Checking the serial number
With Chc 5n displayed, press the ENTER key to display the last five digits of the serial
number. The example below is when the last five digits of the serial number are 12345.

12345.
10.2.10. Checking the program checksumWith C5 pr9 displayed, press the ENTER key to display the program checksum. The
example below is when the checksum is EF.

C500efPage 39

AD-4408A

10.2.11. Checking the FRAM checksumWith C5 fraP displayed, press the ENTER key to display the FRAM checksum. The
memory set in the general functions is not counted.
The example below is when the checksum is EF.

C500ef10.2.12. Checking the calibration-related functions
With
CalfdtP displayed, press the ENTER key to display the settings of thecalibration-related functions.
NOTE: For contents and operations of the calibration-related functions, refer to“7.3. Calibration-Related Functions”.
The settings can not be changed here.

AD-4408A

Page 40

10.3.

Initialization Mode

Initialization restores the contents of the FRAM to the default values.
Three types of initialization are available as shown below.
Initialization mode

Display

RAM initialization

ini raGeneral functions
initialization

inifncAll data
initialization

iniallDescription
Initializes the contents of the RAM only.
The zero and tare values will be restored
to 0.
Initializes the contents of the generalfunctions stored in the FRAM.
Initializes all the contents in the FRAM.
The calibration-related data is also initialized.
So, calibration is required before using
the indicator again.

10.3.1. RAM initialization / General functions initialization
Step 1 While holding down the ENTER key, press the F key.
fnc is displayed to indicate that the indicator will enter the general functionmode.
To return to the weighing mode, press the ESC key.
Step 2 While holding down the ZERO key, press the ENTER key.
1Chc

is displayed to indicate that the indicator will enter the check mode.

Step 3 Press the ∧ or ∨ key to select the initialization mode ( ini ) and press the
ENTER key.
Step 4 Press the ∧ or ∨ key to select the item to be initialized and press the ENTER
key.
Step 5 All the status LEDs blink to prompt a confirmation. To initialize, press and holdthe ENTER key for three seconds or more.
After initialization, the indicator is reset and all the display segments are ON.
And the indicator enters the weighing mode.
To exit from this mode without performing initialization, press the ESC key.

Page 41

AD-4408A

10.3.2. All data initialization
Step 1 Remove the CAL key cover and press the CAL key.
Cal

is displayed to indicate that the indicator enters the calibration mode.

Step 2 Press the ENTER key to display Cal5et . The indicator enters the mode ofcalibration with an actual load. To return to the weighing mode, press the ESC
key.
Step 3 Press the ∧ or ∨ key to select the all data initialization mode ( iniallLL ) andpress the ENTER key.
Step 4 All the status LEDs blink to prompt a confirmation. To initialize, press and holdthe ENTER key for three seconds or more.
After initialization, the indicator is reset and all the display segments are ON.
And the indicator enters the weighing mode.
To exit from this mode without performing initialization, press the ESC key.

AD-4408A

Page 4210.4.

Checking the Load Cell Connection Using the Digital Multimeter

Using the digital multimeter, load cell connection can be checked easily.
The figure below indicates the measurement points to check the connection.
When a summing box is used, the same measurements are required inside the box.

Fig.10 Checking the load cell connection

Checking the load cell connection
Measurement point

What to measure

How to judge
Normally less than 100mV.

EXC+
1

SEN+
2

Voltage drop at EXC+ Can exceed 1V when the load cell cableof the load cell cableis extremely long.
Should be 0V for 4-wire connection.

EXC+
1

EXC4

Load cell excitation
voltage

Correct value: 4.75 to 5.25V
Normally less than 100mV.

SEN3

EXC4

Voltage drop at EXC- Can exceed 1V when the load cell cableof the load cell cableis extremely long.
Should be 0V for 4-wire connection.

SIG6
SIG+
5

EXC4
SIG6

Load cellvoltagemedian About 2.5V (half of the excitation
voltage)

Load cell output
voltage

Compared with the theoretical value
obtained from the load cell rating, actualload and excitation voltage.
Normally 0 to 15mV.
Page 43

AD-4408A

If the AD-4408A does not function properly, contact the nearest A&D dealer.
Use the chart below to write necessary items before contacting the dealer.
Item
Record your value
Description
For 4-wire connection, a jumper is□ 4-wire connection
required between EXC+ andLoad cell connection
SEN+, and between EXC- and□ 6-wire connection
SIG-.
Load cell type
Load cell rating[Unit]
Load cell rated output[mV/V]
Load cell maximum safe[%]
overload
Number of load cells used
[pcs]
Summing box(status of use)
Cable length between the indicator
Length of extension cable[m] and the device such as a summingbox
Indicator initial load
[Unit]
Indicator minimum
In case of decimal number, all the[Unit]division
digitsExample: 0.002 kg
Indicator weighing
In case of decimal number, all the[Unit]capacity
digitsExample: 10.000 kg-0.1mV/V to load cell rated
Load cell output value at[mV/V] sensitivity
the initial load (at no load)(depending on the initial load)
Load cell output value
When loaded to capacity, theLoad cell output value[mV/V]
output value at the initial load +when loaded to capacity
at the loadload cell rated output(or when a mass of[Unit] (within the maximum safe
choice is loaded)
overload)
Measurement point
EXC+
SEN+
1
2
EXC+
EXC1
4
SENEXC3
4
SIGEXC6
4
SIG+
SIG5
6

AD-4408A

What to measure
Voltage drop at EXC+ of theload cell cable

Result[mV]

Load cell excitation voltage[V]

Voltage drop at EXC- of theload cell cable[mV]

Load cell median voltage[V]

Load cell output voltage[mV]

Page 4411. Setting List
When performing maintenance, use the following list as a memo.
In case of inquiry about the product, inform of the user setting.

11.1.

Basic Functions

Function No.
Parameter or
Setting range
Ffncf01
000000 to

111111

fncf020 to 6

fncf03
1 to 3

fncf040 to 3

fncf050 to 9Description
Disable key switch
0: Does not disable the key switch function.
1: Disables the key switch function.
Assigns a function to the F key.
0: None1: Manual print command
2: Hold
3: Alternate switch
4: Momentary switch
5: Clear the tare weight
6: Clear the zero value
Display update rate
1: 20 times/second
2: 10 times/second
3: 5 times/second
Assigns a function to the display.
0: None
1: Zero tracking in progress
2: Alarm (Zero range setting error, over)
3: F key status
Digital filter (cutoff frequency)
0: None1: 11.0 Hz
2: 8.0 Hz
3: 5.6 Hz
4: 4.0 Hz
5: 2.8 Hz
6: 2.0 Hz
7: 1.4 Hz
8: 1.0 Hz
9: 0.7 Hz

Default
value

000000(binary)

0

1

0

8

fncf06
1 to 10Frequency divider ratio1

fncf071 to 2Hold
1: Normal hold
2: Peak hold1
Page 45

User
setting

AD-4408A

11.2.

Standard Serial Output

Function No.
Parameter or
Setting range

Cl f01
1 to 5

Cl f02
1 to 3
Cl f03
1 to 2
Cl f040 to 99

AD-4408A

Description
Output data
1: Displayed weight
2: Gross weight
3: Net weight
4: Tare weight
5: Gross/Net/Tare
Data transfer mode
1: Stream
2: Auto printing
3: Manual printing
Baud rate
1: 600 bps
2: 2400 bps
ID number
0: Does not add an ID number.
1:
⏐
99:

Page 46

Default
value

1

1

2

0

User
setting

11.3.

Calibration-Related Functions

Function No.
Parameter or
Setting range

Description

Defaultvalue

Calf01
0 to 4

Unit of the weight value
0: None
1: g
2: kg
3: t
4: lb (USA version)2

Calf020 to 5

Decimal point position of the weight value: 10n0Minimum division (d) of the weight value
1: 1
2: 2
Calf03
3: 5
1 to 6
4: 10
5: 20
6: 50
Weighing capacity of the weighing instrument
Calf04The decimal point position is the same as
1 to 999999
the setting of Calf02.
Range to enable zero adjustment by theZERO key
Calf05
Expressed in percent of the weighing
0 to 100
capacity with the calibration zero point as
the center
Calf06
Zero tracking time (Unit: second)
When 0.0, zero tracking will not be performed.
0.0 to 5.0

Calf07
0.0 to 9.9
Calf080.0 to 9.9
Calf090 to 9Calf100 to 1
Calf11
0 to 1
Calf120 to 1

Zero tracking band (Unit: 0.1 d)When 0.0, zero tracking will not be performed.
Stability detection time (Unit: second)
When 0.0, stability detection will not be
performed.
Stability detection band (Unit: d)When 0, stability detection will not be
performed.
Tare and zero adjustment when the weightvalue is unstable.
0: Disables both functions.
1: Enables both functions.
Tare when the gross weight is negative.
0: Disables tare.
1: Enables tare.
Standard serial output if the weight value
overflows and is unstable.
0: Disables output.
1: Enables output.
Page 47

User
setting

1

20000

2

0.0
0.0
1.0
2

1

1

1
AD-4408A

Function No.
Parameter or
Setting range

Calf13
1 to 3

Calf14
1 to 2

Calf150 to 1
Calf160 to 1
Calf17-7.00000 to
7.00000
Calf180.00001 to
9.99999
Calf191 to 999999
Calf200 to 1
Calf21
0 to 1
Calf22
1 to 2

AD-4408A

Description
Condition to judge over when the grossweight is negative.
A/D negative over or
1: Gross weight < -999999
2: Gross weight < negative weighing capacity
3: Gross weight < -19 dCondition to judge over when the net weightis negative.
A/D negative over or
1: Net weight < -999999
2: Net weight < negative weighing capacity
Select whether or not to clear the zero
value.
0: Disables.
1: Enables.
Select whether or not to perform zero upon
power-ON.
0: Disables.
1: Enables.

Default
value

1

1

1

0

Input voltage from a load cell at zero.
X.XXXXX mV/V

0.00000

Input voltage from a load cell at span
X.XXXXX mV/V

2.00000

The value of the calibration weightcorresponding to the span input voltage

20000

Select whether or not to output when the
gross weight is negative.
0: Enables output.
1: Disables output.
Select whether or not to restrict
network-related communication.
0: Disables restriction.
1: Enables restriction.
Second header for serial output
1: GS / NT / TR
2: G_ / N_ / T_ (_ space)

Page 48

0

0

1

User
setting12. External Dimensions

Unit: mmFig.11 External dimensions

Page 49

AD-4408A

MEMO

AD-4408A

Page 50

MEMO

Page 51

AD-4408A

MEMO

AD-4408A

Page 52

3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013
Telephone: [81] (3) 5391-6132 Fax: [81] (3) 5391-6148

JAPAN

A&D ENGINEERING, INC.
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