AD-4408A
Weighing Indicatorfor PROFIBUS Interface
AX-ABCC-PROFIINSTRUCTION MANUAL

1WMPD4001974

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.

© 2009 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.
PROFIBUS is a registered trademark of PROFIBUS International.
Anybus-CompactCom is a registered trademark of HMS Industrial Networks.
TORX is a registered trademark of Textron Inc.

Contents
1. About This Manual ...........................................................................................................22.

Introduction...................................................................................................................2

3.

Description of Each Part ...............................................................................................3
3.1. Status LEDs ........................................................................................................3
3.2. Communication Connector..................................................................................44.

Installation ....................................................................................................................5
4.1. Interface Module Installation ...............................................................................5
4.2. Network Configuration.........................................................................................6
4.3. Setting the Functions ..........................................................................................65.

PLC Memory.................................................................................................................85.1. Address Map .......................................................................................................8
5.1.1. OUT Data (6 words), PLC → AD-4408A .........................................................8
5.1.2. IN Data (10 words), AD-4408A → PLC .........................................................10
5.2. Handling Bits Directly ........................................................................................135.2.1. Handling Command Bits ...............................................................................13
5.2.2. Command bit execution procedure ...............................................................135.3. Operation by Commands ..................................................................................145.3.1. Handling Commands.....................................................................................145.3.2. Command execution procedure ....................................................................145.4. Commands........................................................................................................15

6.

Timing Chart ...............................................................................................................16
6.1. Read Command ................................................................................................16
6.2. Write Command ................................................................................................16

7.

Errors..........................................................................................................................18
7.1. Error Types .......................................................................................................18

8.

Check Mode ...............................................................................................................198.1. Checking the PROFIBUS Communication Status .............................................198.1.1. Entering the Check Mode..............................................................................19
8.1.2. Checking the Communication Status ............................................................20

1

1. About This ManualThis manual is intended for those who have a sufficient knowledge about weighing
instruments and PROFIBUS.
For general information regarding PROFIBUS, specifications, wiring, installation andoperation, refer to PROFIBUS-related technical books.
For information on PROFIBUS or PROFIBUS products, contact your local
PROFIBUS Organization or PROFIBUS distributor.
When configuring a network, use cables and connectors designed for PROFIBUS
products.
When configuring PROFIBUS, a GSD file with device information specific to theslave device is required. The GSD file is available on our website. Download it asnecessary.

2. Introduction
The AD-4408A functions as a slave device of PROFIBUS when the PROFIBUS
interface module (AX-ABCC-PROFI) is installed.
Using this interface, a PLC can control the AD-4408A and read the indicated values
from the AD-4408A.
Two methods of controling the AD-4408A by the PLC memory are available;
handling bits directly and using commands.

NOTE: The PROFIBUS interface module, when installed into the AD-4408A, uses
12 bytes (OUT) and 20 bytes (IN) of the PLC memory. So, use much carewhen assigning areas, not to overlap with other slave devices.
Except during weighing or when weighing is possible, all of the IN data
should be zero.
Memory map and check modes vary with the interface module installed.
This manual describes performances when the PROFIBUS interface
module is installed.
When other modules are installed, refer to the relevant instruction manual.
Instruction manuals for each interface module are available on our
website.
2

3. Description of Each PartNOTE 2

Communication
connector

GroundLocking
catch

Locking
catch

Status LED

NOTE 1Retainingscrew

Operation mode LED
Fig.1

Interface module part names

NOTE: 1. A TORX® driver (size T9) to fasten the retaining screws is not provided
with the interface module.
2. A connector for the cable side (D-Sub 9-pin male) is not provided with
the interface module.

3.1.

Status LEDs

NOTE: The illustration below shows how the interface module is positioned when
installed to the AD-4408A.

6

Status LED

9

1

5

Operation mode LED

Fig.2 Position of status LEDs

Table 1

LED state

Description
Not initialized / No power
NormalDiagnostic event in progress
Recoverable error

OFFGreen ON
Green, flashing
Red ON
Table 2

LED state
OFF
Green ON
Green, flashing
Red, single flash
Red, double flash

Status LED (ST)Operation mode LED (OP)

Description
Offline / No power
Online (Normal)
Online (Clear)
Paremeter setting error
PROFIBUS configuration error
3

3.2.

Communication Connector

NOTE: The illustration below shows how the interface module is positioned when
installed to the AD-4408A.

6

9
Communication
connector

1

5

Fig.3 Connector pin assignment

Functions for each pin are as follows.
Table 3

Communication connector

Pin No.

SignalDescription

1

__

__

2

__

__

3

B (+)

B line (Positive side)

4

RTS

RTS

5

GND

Power (GND side)

6+5V

Power (+5V side)

7

__

8

A (-)

9

__

Housing

SHIELD__
A line (Negative side)__
Shield (Connected to the AD-4408A FG terminal)44. Installation
4.1.

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:

Blank panel

Step 1 Using a Phillips screwdriver,loosen the screws that secure
the blank panel to theAD-4408A rear panel, andremove the blank panel.

Step 1

Step 2

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.

Option slot
Retaining screw

Interface module
PC boardin the option slot

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

Step 3Tightening torque0.25 Nm
Step 4Fig.4

Interface module installation

NOTE: A TORX® driver is not provided with the interface module.

5

4.2.

Network Configuration

Turn ON the terminators at both ends of the network.
Table 4

Baud rate and distance

Baud rate

Single line length of cable type A

9.6

kbps

1200 m or less

19.2

kbps

1200 m or less

45.45

kbps

1200 m or less

93.75

kbps

1200 m or less

187.5

kbps

1000 m or less

500

kbps

400 m or less

1.5

Mbps

200 m or less

3

Mbps

100 m or less

6

Mbps

100 m or less

12

Mbps

100 m or less

NOTE: Baud rate is set to the master baud rate automatically
When configuring a network, use cables and connectors designed for PROFIBUS products.
Table 5

4.3.

Example manufacturer of cables and connectors

PROFIBUS cables

Siemens Energy and Automation, Inc.

PROFIBUS connectors

Siemens Energy and Automation, Inc.

Setting the Functions

The functions described here are general functions.
General functions are divided into groups per function and are indicated by the groupname followed with the function number, FXX.
NOTE: General functions determine the AD-4408A performance and all of thesettings are stored in the FRAM.
Setting Procedure
Step 1 While pressing and holding 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 go back to the weighing mode without entering the general function mode,press the ESC key.
6

Step 3 Press the ∧ or ∨ key to select the function group to be set.
DisplayGroup name
PROFIBUS-related functions
pf f
Press the ENTER key. The function number will be displayed.
Function No.

Function

Description

Default value

pf f01

Station No.

0 to 125: Station No.

3

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 parameter number to be selected isdisplayed 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.
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 go back 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.

75. PLC Memory
5.1.

Address Map
Commands to operate the AD-4408A and operating parameters are written into the
PLC memory OUT data (6 words) and are executed.
Response data from the AD-4408A is read to the PLC memory IN data (10 words).
Data used such as Write data is in hexadecimal format.

NOTE: The PROFIBUS interface module, when installed into the AD-4408A, uses
12 bytes (OUT) and 20 bytes (IN) of the PLC memory. So, use much carewhen assigning areas, not to overlap with other slave devices.
5.1.1. OUT Data (6 words), PLC → AD-4408A
Bit

15 14 13 12First wordof OUT data

9 8 7

6 5 4

3 2 1

0

3 2 1

0

Write data (Low order word)

Bit
Second wordof OUT data

11 10

15 14 13 12

11 10

9 8 7

6 5 4

Write data (High order word)
Zero
Clear the zero value
Tare
Clear the tare value
Hold*
Net display
Gross display
Manual print command

Bits 8-15 areinternally reserved.
Bit 15 14 13 12 11 10

9Third wordof OUT data

Command bits

8

7

6

5

4

*Hold at the rising edge, release at the falling edge

8

3

2

1

0

Bit 15 14 13 12 11 10
Fourth wordof OUT data

9

8

7

6

5

4

3

2

1

0

5

4

3

2

1

0

Reserved internallyBit 15 14 13 12 11 10

Fifth wordof OUT data

9

8

7

6

Command No.

R / W flag
Command request flag
Error reset flag

Bits 3-15 areinternally reserved.
Bit 15 14 13 12 11 109Sixth wordof OUT data

Command bits

8

7

6

5

4

About OUT Data
Write data ----------------------Used by the write command.
Command bits-----------------Assigns a function to execute to each bit.
Command No.-----------------Specifies a command number to execute.
R / W flag-----------------------Specifies a command type, read or write.
Internally reserved -----------Do not write anything other than 0 (zero).

9

3

2

1

0

5.1.2. IN Data (10 words), AD-4408A → PLC
Bit
First wordof IN data

15 14 13 12

9 8 7

6 5 4

3 2 1

0

3 2 1

0

3 2 1

0

3 2 1

0

3 2 1

0

3 2 1

0

Net weight
Weight value (Low order word)
Bit

Second wordof IN data
Bit
Third wordof IN data
Bit
Fourth wordof IN data
Bit

15 14 13 12

11 10

9 8 7

6 5 4

Net weight
Weight value (High order word)
15 14 13 12

11 10

9 8 7

6 5 4

Gross weight
Weight value (Low order word)
15 14 13 12

11 10

9 8 7

6 5 4

Gross weight
Weight value (High order word)
15 14 13 12

Fifth wordof IN data

11 10

9 8 7

6 5 4

Read data (Low order word)
Bit

Sixth wordof IN data

11 10

15 14 13 12

11 10

9 8 7

6 5 4

Read data (High order word)
StableNet center of zero
Gross center of zero
Net display
Gross display
Tare in progress
Hold in progress
Capacity exceeded
Weighing failure
In sync with

Bits 10-15 areinternally reserved.
Bit 15 14 13 12 11 10Seventh wordof IN data

9

8

7

Status bits
10

6

5

4

3

2

1

0

Net overNet under
Gross over
Gross under
Input (A/D) over
Input (A/D) under
Zero error
Tare error
Net display error
Bits 9-15 areinternally reserved.
Bit 15 14 13 12 11 10 9
Eighth wordof IN data

7

6

5

4

3

2

1

0

6

5

4

3

2

1

0

1

0

Status bits

Bit 15 14 13 12 11 10
Ninth wordof IN data

8

9

8

7

Command No. response

R / W response flag
Command request response flag
Slave normal operation
Slave readyError status flag
Decimal point position 20
Decimal point position 21
Decimal point position 22
Unit 20
Unit 21
Unit 22
Checksum error
Input (A/D) error
FRAM error
Calibration error
Mode error
Bit 15 14 13 12 11 10
Tenth wordof IN data

9

8

7

Status bits
11

6

5

4

3

2

Unit

Decimal point position

0: None
1: g
2: kg
3: t
4: lb (USA version)

0: None1: 101
2: 102
3: 103
4: 104
5: 10512345612345.6
1234.56
123.456
12.3456
1.23456

About IN Data
Slave ready --------------------Bit to turn ON when the AD-4408A is in the weighing mode.
Command No. response ---Response data to a command number.
Read data ----------------------Response data to a command.
R / W response flag----------Response to the OUT data R / W flag.
Reserved internally ----------Not used.
Status area --------------------The weighing status of the AD-4408A is output.

NOTE: For further information, refer to “5.3. Operation by Commands”.

12

5.2.

Handling Bits Directly

5.2.1. Handling Command Bits
A command bit is in the third word of OUT data.
To execute, turn the corresponding command bit ON.
The command bit will be effective at the rising edge.
The signal level must be maintained for 30 msec minimum.
Table 7

Third word of OUT data

Command bits

Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7

Command bit and action
Zero
Clear the zero value
Tare
Clear the tare value
Hold
Net display
Gross display
Manual print command

5.2.2. Command bit execution procedure
Step 1 Turn OFF all the PLC memory command bits.
Step 2 Turn ON the PLC memory command bit to be executed.
Step 3 The AD-4408A executes the command.
Step 4 Turn OFF all the PLC memory command bits.

13

5.3.

Operation by Commands

5.3.1. Handling Commands
Specify the R / W flag either to the read command or the write command.
R / W flag: 0: Write command 1: Read command
Specify a command to execute to the command No.
Specify the command data to be written to Write data.
The command will be effective at the rising edge of the command request flag.
The signal level must be maintained for 30 msec minimum.
The response result to the command request is output as the command request
response flag.
The command response result is output as the command No. response.
The response result of the read command is output as the read data.

5.3.2. Command execution procedure
Before execution
Step 1 Confirm that the command request flag is turned OFF.
Step 2 Specify the R / W flag either to the read command or the write command.
R / W flag:

0: Write command 1: Read command

Step 3 Specify the command to execute to the command No.
Step 4 Specify the command data to be written to Write data when necessary.
Execution
Step 5 Confirm that the slave ready bit is turned ON.
Step 6 Turn the command request flag ON. The command will be executed at the risingedge.
Step 7 The AD-4408A responses. The response results are output as the command
request response flag, R / W response flag and command No. response.
Step 8 When the read command is specified by the R / W flag, a response will be output
as the read data.
After execution
Step 9 Turn the command request flag OFF.
14

5.4.

Commands

The master device uses the write command to convey instructions to the AD-4408A.
For details, refer to “6.2. Write Command” of “6. Timing Chart”.
Table 7 Commands

Command No.
0
0
0
0
0
0
0
0

Command data
1
2
3
4
5
6
7
8

Command
Zero
Clear the zero value
Tare
Clear the tare value
Hold
Net display
Gross display
Manual print command15

6. Timing Chart
6.1.

Read Command

Specify the data type to read to the command No. The read data is output to the read dataarea.
R / W flag is ON.
R / W flag
Command No.
Command request flag
R / W response flag
Command No. response
Read data
Command request response flag
Fig.5

6.2.

Read command

Write Command

Write Command
Specify the data type to write to the command No. Place the data to be written to Writedata.
R / W flag is OFF.
R / W flag
Command No.
Write data
Command request flag
R / W response flag
Command No. response
Command request response flag
Fig.6

16

Write command

Slave Normal Operation
Slave normal operation is a signal to confirm that the AD-4408A is connected to the power
and is in normal operating conditions. During normal operation, the signal is reversed at a
0.5 to 1 second interval.
Slave normal operation

0.5 to 1 sec

Fig.7

Slave normal operation signal

Error status flag
If an AD-4408A error has occurred, the slave ready bit will be turned OFF and the error
status flag will be turned ON to convey to the master device that an error has occurred.
The master device will turn the error reset flag ON to request resetting the error status
flag.
Error status flag
Error reset flag
Slave readyFig.8
Table 8Command bits / Status bits

MemorySixth word of OUT data
Tenth word of IN data

Resetting the error status flag

Description
Bit 2

Error reset flag

Bit 2

Slave normal operation

Bit 3

Slave readyBit 4

Error status flag

17

7. Errors
7.1.

Error Types

Error Status Flag
This conveys to the master device that an error has occurred.
Turn the error reset flag ON to request resetting the error status flag.
Table 9Error status flag

Error type

CausesChecksum error

Program checksum does not match.

Input (A/D) error

Data can not be acquired from the A/D converter.

FRAM error

Data can not be written into the FRAM.

Calibration error

Calibration data is not correct.

Mode error

Moved to a mode other than the weighing mode.

Weighing FailureThis conveys a weighing failure to the master device.
This will be reset when normal weighing has resumed.
Table 10Weighing failure

Error type

CausesZero error

Zero adjustment is not performed.

Tare error

Tare is not performed.

Net display error

A net value is not displayed.

Capacity exceeded

The weighing capacity has been exceeded.

Capacity ExceededThis conveys to the master device that the weighing capacity has been exceeded.
This will be reset when all the errors are cleared.
Table 11

Capacity exceeded

Error type

CausesNet overThe net weight is over the net weight range.

Net under

The net weight is below the net weight range.

Gross overThe gross weight is over the gross weight range.

Gross under

The gross weight is below the gross weight range.

A/D overA/D value is over the A/D value range.

A/D under

A/D value is below the A/D value range.

18

8. Check Mode
8.1.

Checking the PROFIBUS Communication Status

8.1.1. Entering the Check Mode
Step 1 While pressing and holding the ENTER key, press the F key.
fnc is displayed to indicate that the indicator will enter the general functionmode.
To go back to the weighing mode, press the ESC key.
Step 2 While pressing and holding 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 Chc pf (PROFIBUS check mode) and press
the ENTER key to enter the PROFIBUS check mode.
To exit from the check mode, press the ESC key.
Table 12Check mode list

Display

ChckeyChc ClChc∗∗∗
Chc pfChc∗∗∗
Chc r5
Chc adChc inChcpr9Chc 5nC5 pr9C5 fraCalfdtChecking item
Key switches
Standard serial output
Interfaces
PROFIBUS
Testing terminal
A/D (Load cell)
Internal countProgram version
Serial number
Program checksum
Memory (FRAM) checksum
Calibration-related functions

19

8.1.2. Checking the Communication Status
Press the ∧ or ∨ key to change addresses.

Two digits: address (01 to 06, 11 to 1A)
Four digits: data (0000 to FFFF)

８ ８.８ ８ ８ ８□ □ □ □ □ □Slave error
Slave readyブデSlave normal
operation
Interface error
Interface waitInterface active
Address

Data type

Word

01 to 06

OUT data

1 to 611 to 1AIN data

1 to 1020