Mitsubishi A1SJ71PB92D, AJ71PB92D User Manual

PROFIBUS-DP Interface Module
Type AJ71PB92D/A1SJ71PB92D

User,s Manual

Mitsubishi Programmable Logic Controller

SAFETY PRECAUTIONS

(Read these precautions before using.)

When using Mitsubishi equipment, thoroughly read this manual and the associated manuals introduced
in this manual. Also pay careful attention to safety and handle the module properly.

These precautions apply only to Mitsubishi equipment. Refer to the CPU module user’s manual for a
description of the PLC system safety precautions.

These • SAFETY PRECAUTIONS • classify the safety precautions into two categories: “DANGER” and
“CAUTION”.

DANGER

Procedures which may lead to a dangerous condition and cause death or
serious injury if not carried out properly.

CAUTION

Procedures which may lead to a dangerous condition and cause superficial
to medium injury, or physical damage only, if not carried out properly.

Depending on circumstances, procedures indicated by

CAUTION may also be linked to serious results.
In any case, it is important to follow the directions for usage.
Store this manual in a safe place so that you can take it out and read it whenever necessary. Always

forward it to the end user.

[DESIGN PRECAUTIONS]

DANGER

z

When a communication error occurs in the PROFIBUS network, the status of the faulty station is as follows.
Configure an interlock circuit in the sequence program using the communication status information (input
X1, buffer memory 2040 to 2079) so that the system can operate safely.
Erroneous outputs and mis-operation could cause accidents.
(1) The input data of the master station maintains the data before abnormality of the communication.
(2) When the master station is down, the output state of each slave station will be in accordance with the

parameter settings.

(3) When any slave station is down, the output state of other slave stations will be in accordance with the

parameter settings of the master station.

z

If a stop error occurs in the CPU module, the communication status is as described below.
(1) Communication with the slave station is stopped.
(2) For the input data received from the slave station, the values at CPU module stop error occurrence are

held.

(3) The output data sent from the AJ71PB92D/A1SJ71PB92D to the slave station are cleared.

CAUTION

z

When the PROFIBUS cable is laid, do not lay it close to main circuits or power lines.
They should be installed 100mm(3.9inch) or more from each other.
Not doing so could result in noise that would cause malfunctioning.

[INSTALLATION PRECAUTIONS]

CAUTION

z

Use the module in the environment given in the general specifications of the CPU module’s User’s Manual.
Using the module outside the range of the general specifications may result in electric shock, fire or
malfunctioning, or may damage or degrade the module.

z

Insert the tabs at the bottom of the module into the mounting holes in the base unit before installing the
module. (The AnS series module shall be fastened by screws in the base unit at the specified torque.)
Not installing the module correctly could result in malfunctioning, breakdowns or pieces of the product falling

z

Tighten the fixing screws of the PROFIBUS cable with the specified torque. If the screws are loose, it could
result in malfunction of the module.

z

Do not touch the conductive area or electric parts of the module.
Doing so may cause module malfunctioning or breakdowns.

[WIRING PRECAUTIONS]

CAUTION

z

Switch all phases of the external power supply of the PLC system off before connecting the PROFIBUS
cable. Not doing so could cause failure or malfunctioning of the module.

z

Be careful not to let foreign matter such as filings or wire chips get inside the module. These can cause fire,
breakdowns and malfunctioning.

z

The PROFIBUS cable which is connected to the module must be protected with a duct or secured in
position with clamps.
Unless the cable is thus protected or secured, the module or the cable could be damaged when the cable
swings, moves or it is strained with careless pulls, or it could cause malfunction when the cable contacts
with any undesirable objects.

z

When disconnecting the PROFIBUS cable from the module, do not pull by holding the cable section. To
disconnect the cable, make sure to hold the connector which is coupled with the module. Do not attempt to
pull the cable to disconnect it from the module. It could damage the module or the cable, or cause
malfunction due to a poor contact of the cable.

[STARTING AND MAINTENANCE PRECAUTIONS]

DANGER

z

Switch all phases of the external power supply off before cleaning.
Not doing so could cause electric shock.

CAUTION

z

Never disassemble or modify the module.
This may cause breakdowns, malfunctioning, injury and/or fire.

z

Switch all phases of the external power supply off before mounting or removing the module. If you do not
switch off the external power supply, it will cause breakdowns or malfunction of the module.

z

Set the ON/OFF select switch of the terminal resistor before the operation.
If the setting is switched during the operation, network error may occur, or error detection may not be
performed by error.

z

Before handling the module, always touch grounded metal, etc. to discharge static electricity from the
human body.
Failure to do so can cause the module to fail or malfunction.

[OPERATING PRECAUTIONS]

DANGER

z

Do not write data into the "not usable" of the buffer memory of special function modules. Also, do not output
the "not usable" signal as the output signal to a special function module from the PLC CPU. Writing data
into the "not usable area" or outputting an "not usable" signal may cause system malfunctions in the PLC.

CAUTION

z

The online operations conducted for the CPU module being operated (especially when changing data or
operation status), shall be conducted after the manual has been carefully read and a sufficient check of
safety has been conducted.
Operation mistakes could cause breakdowns to or malfunction of the module.

[DISPOSAL PRECAUTIONS]

CAUTION

z

When disposing of this product, treat it as industrial waste.

Revisions

* The manual number is noted at the lower left of the back cover.

Print Date *Manual Number Revision

May, 1997 IB (NA)-66773-A First printing
Sep., 1997 IB (NA)-66773-B Correction

Section 2.3, Chapter 3

Addition

Appendix 2

Oct., 1998 IB (NA)-66773-C Model Addition

AJ71PB92D

Correction

SAFTY PRECAUTIONS, Chapter 1, 2, 3, 4, Section 5.1, 5.2, 5.3, 5.5.1,

5.5.2, 5.6, 6.1, Chapter 7, 8, 9

Addition

Appendix 1

Chapter Alteration

Appendix 1 → Appendix 3

Jun., 2000 IB (NA)-66773-D Correction

Chapter 1, Section 2.1, 2.2, 2.3, 2.4, 2.5, 3.1, 3.2, 4.2.1, 4.2.2, 4.3.1, 5.5.1,
Appendix 1

Addition

Section 2.6, 4.4, 4.5, 8.6

Jun., 2003 IB (NA)-66773-E Correction

SAFTY PRECAUTIONS, Section 4.3.2, 6.1, 8.2.1, 8.2.2

Addition

Section 3.3.3, Appendix 2

Apr., 2004 IB (NA)-66773-F Correction

Section 1.2, 3.2, 3.3.3, 4.2.2, 4.3.1, 4.3.2, 4.6, 5.1, 5.3, 6.1, 6.2

Addition

SAFTY PRECAUTIONS, Chapter 9

Aug., 2004 IB (NA)-66773-G Correction

SAFTY PRECAUTIONS, Section 2.2, 3.3.2, 3.3.3, 4.3.2, 5.5.1, Chapter 8,
Section 8.2.2

Japanese Manual Version SH-3330-G

This manual does not imply guarantee or implementation right for industrial ownership or implementation
of other rights. Mitsubishi Electric Corporation is not responsible for industrial ownership problems caused
by use of the contents of this manual.

 1998 Mitsubishi Electric Corporation

Introduction

Thank you for purchasing the Mitsubishi Programmable Controller MELSEC-A Series.
Before using the equipment, plese read this manual carefully to develop full familiarity with the functions and
performance of the graphic operation terminal you have purchased, so as to ensure correct use.
Please forward a copy of this manual to the end user.

Table of Contents

About This Manual

1. OVERVIEW 1-1 to 1-2

1.1 Software Configuration......................................................................................................................................1- 1

1.2 AJ71PB92D/A1SJ71PB92D Features .............................................................................................................1- 2

2. SYSTEM CONFIGURATION 2-1 to 2-6

2.1 Whole System Configuration ............................................................................................................................2- 1

2.2 System Configuration Example.........................................................................................................................2- 2

2.3 Applicable CPU Modules..................................................................................................................................2- 3

2.4 Installable Base Units .......................................................................................................................................2- 4

2.5 Combining with MELSECNET (II), MELSECNET/B, and MELSECNET/10.......................................................2- 4

2.6 Precautions for Configuring a System ..............................................................................................................2- 5

3. SPECIFICATIONS 3-1 to 3-10

3.1 General Specification........................................................................................................................................3- 1

3.2 Performance Specifications..............................................................................................................................3- 2

3.3 Network Configuration.......................................................................................................................................3- 3

3.3.1 Basic configuration................................................................................................................................3- 3

3.3.2 Applicable configuration.........................................................................................................................3- 4

3.3.3 Number of connectable slaves..............................................................................................................3- 8

4. FUNCTIONS 4-1 to 4-32

4.1 Functions for Exchanging with Slaves..............................................................................................................4- 1

4.1.1 Exchange flow........................................................................................................................................4- 1

4.1.2 Global control functions.........................................................................................................................4- 2

4.2 I/O Signal..........................................................................................................................................................4- 5

4.2.1 I/O signal list..........................................................................................................................................4- 5

4.2.2 I/O signal detail description....................................................................................................................4- 6

4.3 Buffer Memory List............................................................................................................................................4- 9

4.3.1 Buffer memory/configuration..................................................................................................................4- 9

4.3.2 Buffer memory detailed description.......................................................................................................4-10

4.4 While-Run Operation Mode Changing Function...............................................................................................4-30

4.5 AJ71PB92D/A1SJ71PB92D's Remote Parameter Setting Function Using MELSEC ProfiMap

Configuration Software......................................................................................................................................4-31

4.6 E

2

PROM initialization function..........................................................................................................................4-32

5. PROCEDURES BEFORE SYSTEM OPERATION 5-1 to 5-10

5.1 Procedures before Operation............................................................................................................................5- 1

5.1.1 Parameter setting procedure.................................................................................................................5- 2

5.2 Handling Precautions ........................................................................................................................................5- 3

5.3 Part Names and Settings..................................................................................................................................5- 4

5.4 Execution Method for Self-diagnosis.................................................................................................................5- 6

5.5 Wiring................................................................................................................................................................5- 7

5.5.1 PROFIBUS cable wiring.........................................................................................................................5- 7

5.5.2 Terminator switch ..................................................................................................................................5- 7

5.5.3 Precautions against wiring.....................................................................................................................5- 8

5.6 Maintenance and Inspection.............................................................................................................................5-10

6. COMMUNICATION TIME 6-1 to 6-4

6.1 Transmission Delay Time When There is One Master Station.........................................................................6- 1

6.2 Transmission Delay Time When There are Multiple Master Stations...............................................................6- 4

7. DDB FILE 7-1 to 7-2

8. PROGRAMMING 8-1 to 8-6

8.1 Initial Program...................................................................................................................................................8- 1

8.2 Data I/O with Slave...........................................................................................................................................8- 2

8.2.1 Normal service mode (MODE switch : No. 0)........................................................................................8- 2

8.2.2 Extend service mode (MODE switch : No. E)........................................................................................8- 3

8.3 Communication Trouble Area and Expansion Communication Trouble Area Clear.........................................8- 4

8.4 Address Information Read................................................................................................................................8- 4

8.5 Global Control...................................................................................................................................................8- 5

8.6 While-Run Operation Mode Changing..............................................................................................................8- 6

9. TROUBLESHOOTING 9-1 to 9-2

APPENDIX A-1 to A-10

Appendix 1 Differences between AJ71PB92D/A1SJ71PB92D Software Versions................................................. A- 1

Appendix 1.1 Differences between A1SJ71PB92D Software Versions...........................................................A- 1

Appendix 1.2 Restrictions on Use of A1SJ71PB92D Software Versions in the Same System....................... A- 2

Appendix 1.3 Differences between AJ71PB92D Software Versions...............................................................A- 2

Appendix 1.4 Restrictions on Use of AJ71PB92D Software Versions in the Same System ...........................A- 2

Appendix 2 Precautions for Replacing AJ71PB92 with A(1S)J71PB92D................................................................A- 3

Appendix 3 Extended Trouble Information of Mitsubishi's Slaves...........................................................................A- 7

Appendix 4 External Dimensions.............................................................................................................................A- 8

About This Manual

The following are manuals related to this product.
Request for the manuals as needed according to the chart below.

Related Manual

Manual Name Article No.

MELSEC ProfiMap Configuration System for Open Networks Software Manual 65778-B

* Inquiries can be made to :

MITSUBISHI ELECTRIC EUROPE Factory Automation
Gothaer Strasse 8 D-40880 Ratingen Germany
Phone : [phone]
Fax : [phone]

1. OVERVIEW MELSEC-A

1-1

1. OVERVIEW

This is the user's manual for the AJ71PB92D/A1SJ71PB92D PROFIBUS-DP interface module
(hereafter abbreviated as " AJ71PB92D/A1SJ71PB92D. When explain separately, however,
abbreviated as AJ71PB92D, A1SJ71PB92D), which is used to connect a MELSEC-A/QnA/Q series
programmable controller to a PROFIBUS-DP network.
The AJ71PB92D/A1SJ71PB92D operates as a master station (class 1) in the PROFIBUS-DP network.

1.1 Software Configuration

FROM/TO

User Interface

Direct Data Link Mapper

FDL

PHY

(DDLM)

empty

FMA1/2

MELSEC A Series PC

Communication using a buffer memory

Portion where master
PCB is installed

Layer 3 to 7

Layer 2 Datalink layer
Layer 1 Physical layer

Portion where slave
PCB is installed

The AJ71PB92D/A1SJ71PB92D has a physical layer, data link layer, DDLM, and user interface that
conform to PROFIBUS-DP, and communicates data with the PLC CPU by using a buffer memory.
The main application of PROFIBUS-DP is networks that execute high-speed communication at the
level of sensors and actuators, and the AJ71PB92D/A1SJ71PB92D has been designed with this in
mind: its functions are mainly related to data I/O with slave stations.

1. OVERVIEW MELSEC-A

1-2

1.2 AJ71PB92D/A1SJ71PB92D Features

(1) Operates as a PROFIBUS-DP master (class 1) station.
(2) Makes possible the exchange of input and output data to and from the slave station

without the need to be aware of the PROFIBUS-DP protocol by using I/O signals X/Y and
the buffer memory.

(3) Supports 3M, 6M, 12M [bps] network communication speeds in addition to the 9.6k, 19.2k,

93.75k, 187.5k, 500k, and 1.5M [bps] supported by the AJ71PB92D/A1SJ71PB92D. These

can be selected using a configurator.
(4) Station Nos. from 0 to 125 can be set using the configurator.
(5) Trouble information can be read from the slave station using the I/O signal X/Y and the

buffer memory.
(6) The global control function makes it possible to maintain all slave I/O at the same time. In

addition, this can also be canceled.
(7) The module contains a self-diagnosis function that can be used to test the hardware such

as the internal memory.

2. SYSTEM CONFIGURATION MELSEC-A

2-1

2. SYSTEM CONFIGURATION

This section explains system configuration for the AJ71PB92D/A1SJ71PB92D

2.1 Whole System Configuration

(1) For the A1SJCPU

A1SJCPU (S3)

Extension cable

Extension base unit

A1SJ71PB92D

A1SC[ ]B

A1S6[ ]B(S1)/A1S5[ ]B(S1)

A1SJHCPU

(2) For the compact building block type CPU

Compact building block type
CPU

Extension cable

A1SC[ ]B

Extension base unit

Basic base unit

A1SJ71PB92D

A1S6[ ]B(S1)/A1S5[ ]B(S1)

A1S3[ ]B/A1S38HB

(3) For the building block type CPU

Building block type CPU

Extension cable

AC[ ]B

Extension base unit

Basic base unit

AJ71PB92D

A6[ ]B/A5[ ]B

A3[ ]B/A38HB

2. SYSTEM CONFIGURATION MELSEC-A

2-2

(4) For the Q series CPU

Q series CPU

Extension cable

QC[ ]B

Extension base unit

Basic base unit

A1SJ71PB92D

QA1S6[ ]B

Q3[ ]B

2.2 System Configuration Example

The following describes the A1SJ71PB92D system configuration example.
A communication parameter file is created in Windows using the Configurator software package, this
parameter file can then be down-loaded via an RS-232C cable to the AJ71PB92D/A1SJ71PB92D.

Via RS-232C

AJ71PB92D

A1SJ71PB92D

RS-232C

Personal computer supporting Window s 3.1 or 95

MITSUBISHI ELECTR IC Corp.
MELSEC ProfiMap
(Ver. 3.0 or later)

PROFIBUS network

Point

Refer to "About This Manual" for inquiry for MELSEC ProfiMap.

*: Version confirmation method of AJ71PB92D/A1SJ71PB92D

0

F

E

D

C

B

A

9

8

7

6

5

4

3

2

1

MODE

0:ONLINE 1
1:PRM SET
2:TEST

A1SJ71PB92D

RUN

SD/RD
TOKEN
READY

FROM/TO

PRM SET

RSP ERR.

FAULT

TEST
B6
B5
B4
B3
B2
B1
B0

S
T

.
N
O

.

BG

BG

Software version
Hardware version

E:ONLINE 2

Version

Hardware Software

AJ71PB92D

A or later C or later

A1SJ71PB92D B or later G or later

Model

2. SYSTEM CONFIGURATION MELSEC-A

2-3

2.3 Applicable CPU Modules

The following table shows the CPUs that the AJ71PB92D/A1SJ71PB92D can use.
(1) AJ71PB92D

Applicable CPU Modules

A1SCPUC24-R2
A1SJHCPU, A1SHCPU,
A2SHCPU, A2SHCPU-S1 ,
A1NCPU, A1NCPUP21,
A1NCPUP21-S3, A1 NCP UR2 1 ,
A2NCPU, A2NCPUP21,
A2NCPUP21-S3, A2 NCP UR2 1 ,
A2NCPU-S1, A2NCPUP2 1 - S 1 ,
A2NCPUP21-S4, A2 NCP UR2 1 ,
A3NCPU, A3NCPUP21,
A3NCPUP21-S3, A3 NCP UR2 1
A2ASCPU, A2ASCPU-S1,
A2ASCPU-S30, A2USHCPU-S1
A2ACPU, A2ACPUP21,
A2ACPUP21-S3, A2ACPUR21,
A2ACPU-S1, A2ACPUP21-S1,
A2ACPUP21-S4, A2ACPUR21,
A3ACPU, A3ACPUP21,
A3ACPUP21-S3, A3ACPUR21,
A2UCPU,A2UCPU-S1,
A3UCPU, A4UCPU
Q2ASCPU, Q2ASCPU-S1,
Q2ASHCPU, Q2ASHCPU- S 1 ,
Q2ACPU, Q2ACPU-S1,
Q3ACPU, Q4ACPU, Q4ARCPU

(2) A1SJ71PB92D

Applicable CPU Modules

A1SCPUC24-R2
A1SJHCPU, A1SHCPU,
A2SHCPU, A2SHCPU-S1
A2ASCPU, A2ASCPU-S1,
A2ASCPU-S30, A2USHCPU-S1
Q2ASCPU, Q2ASCPU-S1,
Q2ASHCPU, Q2ASHCPU- S 1
Q02CPU-A, Q02HCPU-A,
Q06HCPU-A

2. SYSTEM CONFIGURATION MELSEC-A

2-4

2.4 Installable Base Units

The base modules that can be installed in the AJ71PB92D/AISJ71PB92D are shown below.
(1) AJ71PB92D

Installable Base Units

Basic base unit Extension base unit
A32B, A32B-S1, A35B, A38B, A38HB A52B, A55B, A58B, A62B, A65B, A68B

(2) A1SJ71PB92D

Installable Base Units

Basic base unit Extension base unit *1
A1S32B, A1S33B, A1S35B, A1S38B,

A1S38HB

A1S52B (S1), A1S55B (S1), A1S58B (S1),
A1S65B (S1), A1S68B (S1),QA1S65B,
QA1S68B

*1: The no power supply module extension base unit A1S5 [ ] B (S1) may not have sufficient power

supply capacity, so use the A1S6 [ ] B (S1) when installing a AJ71PB92D/A1SJ71PB92D in the
extension base unit.
When the A1S5 [ ] B (S1) must be installed, do so after referring to the chapter covering power
supplies in the respective CPU Module User’s Manual.

2.5 Combining with MELSECNET (II) , MELSECNET/B, and
MELSECNET/10

The AJ71PB92D/A1SJ71PB92D can be installed in the MELSECNET (II) and MELSECNET/B master
stations and local stations, and in the MELSECNET/10 control stations and normal stations.
However, the AJ71PB92D/A1SJ71PB92D cannot be installed in the MELSECNET (II),
MELSECNET/B, and MELSECNET/10 remote stations, so be careful.

2. SYSTEM CONFIGURATION MELSEC-A

2-5

2.6 Precautions for Configuring a System

(1) There are the following restrictions on the AJ71PB92D/A1SJ71PB92D according to the

applied CPU module and used configuration software.

Parameter File Write Path Max. I/O Data Length

CPU

Module

Configuration

Software

Via

AJ71PB92D/

A1SJ71PB92D

RS-232C
interface

Via

CPU module

RS-232C/

RS-422

interface

Normal service

mode

Extended

service mode

SW0D5F­PROFIMAP

32 bytes each for
input and output

MELSEC­PROFIMAP 2.0

Q series
CPU

MELSEC­PROFIMAP 3.0

244 bytes each
for input and
output*1

SW0D5F­PROFIMAP

32 bytes each for
input and output

MELSEC­PROFIMAP 2.0

Write disabled

A/QnA
series
CPU

MELSEC­PROFIMAP 3.0

Write enabled

Write enabled*1

32 bytes each for
input and output

244 bytes each
for input and
output*1

*1: The software version usable by the AJ71PB92D/A1SJ71PB92D is AJ71PB92D (A or

later) or A1SJ71PB92D (E or later).
When A1SJ71PB92D (software version D or earlier) is used, write is disabled and the
max. data length is 32 bytes each for input and output.

(2) Precautions for using the parameters preset for extended service mode to operate the

module in normal service mode.

The following table gives the operating conditions (conditions per one slave station) for the time
when the parameters preset for the extended service mode are used to operate the
AJ71PB92D/A1SJ71PB92D preset for the normal service mode/extended service mode.

: Operable 5 : Inoperable

Parameter Size Exchange Data LengthOperating Conditi on
AJ71PB92D
A1SJ71PB92D

122 bytes max 244 bytes max 32 bytes max 244 bytes max.

AJ71PB92D software version A
or later and normal service
mode setting

5

A1SJ71PB92D software version
E or later and normal service
mode setting

5

A1SJ71PB92D software version
D or earlier and extended
service mode setting

5 5

(3) In either of the following cases, the AJ71PB92D/A1SJ71PB92D buffer memory must be

accessed by a sequence program when the module ready signal X1D of the
AJ71PB92D/A1SJ71PB92D is ON.

• The operation mode is changed using Y11/X11 in the sequence program.

• Parameter setting is made with ProfiMap connected to other than the RS-232C port of

the AJ71PB92D/A1SJ71PB92D. (For example, parameter setting is made with ProfiMap

connected to the RS-422/RS-232 connector of the CPU module.)
If the buffer memory is accessed with the X1D status ignored, the CPU module may detect
the "SP UNIT DOWN" error, stopping the sequence operation.

2. SYSTEM CONFIGURATION MELSEC-A

2-6

(4) Do not make parameter setting via buffer memory and parameter setting from the RS-

232C port of the AJ71PB92D/A1SJ71PB92D at the same time.

If they are made simultaneously, ProfiMap which started parameter write earlier wins the
parameter write right after the operation mode is changed to the parameter setting mode, and
the other ProfiMap cannot perform parameter write and detects an error.
This status will be automatically cleared 15 seconds after completion of parameter write if
parameter write via the CPU module is valid, or 3 seconds after completion of parameter write
if parameter write from RS-232C is valid.

(5) Do not make simultaneous access to the AJ71PB92D/A1SJ71PB92D from multiple

ProfiMap's.

If such access is made, the AJ71PB92D/A1SJ71PB92D may not be accessed properly.

(6) If remote parameter setting is performed from MELSEC ProfiMap to the

AJ71PB92D/A1SJ71PB92D which is making data exchange, note that PROFIBUS data

exchange will stop during parameter setting.

(7) In a system where remote parameter setting is made from MELSEC ProfiMap, do not

execute the mode changing function using the program.

If the mode changing function is executed in the program, an interlock with the remote
parameter setting is not provided and therefore the mode may not be changed.

3. SPECIFICATIONS MELSEC-A

3-1

3. SPECIFICATIONS

This section explains the AJ71PB92D/A1SJ71PB92D the general specifications, performance
specifications, and transmission specifications.

3.1 General Specification

This section explains the AJ71PB92D/A1SJ71PB92D general specifications.

Table 3.1 General Specification

Item Specification

Usage environment
temperature

0 to 55

°

C

Storage environment
temperature

-20 to 75

°

C

Usage environment humidity 10 to 90%RH, No condensation formation
Storage environment

humidity

10 to 90%RH, No condensation formation

When there is intermittent vibration

Frequency Acceleration Amplitude Sweep count
10 to 57Hz —

0.075mm
(0.003in.)

Anti-vibration 57 to 150Hz 9.8m/s

2

—

Where there is continuous vibration

10 to 57Hz —

0.035mm
(0.001in.)

57 to 150Hz 4.9m/s

2

—

Anti-shock

Complies with JIS B3501, IEC61131-2

(147m/s

2

, 3 times in the direction for each of X, Y, Z)
Usage environment No corrosive gas, etc.
Usage altitude 2000m or less
Installation location Inside the control panel
Over voltage category *

1

II or less

Pollution level *

2

2 or less

Cooling method Self cooling

*1 Shows if an estimate has been made for which distribution areas the connections will be done for

the equipment from the public power grid to the equipment installation area inside the
configuration.

Category II applies to equipment that receives its power from fixed facilities. The surge
resistance voltage for equipment rated to 300V is 2500V

*2 Shows the index for inductive matter generation in the environment in which the equipment is

used. Pollution level 2 is for dirt that is non-inductive. However, occasionally inductance can be
generated in the environment by condensation.

Complies with JIS

B3501, IEC61131-2

10 times in each direction

for X, Y, Z (80 minutes)

3. SPECIFICATIONS MELSEC-A

3-2

3.2 Performance Specifications

Item Specifications

Model AJ71PB92D A1SJ71PB92D

Electrical standards and characteristic s Complies with EIA-RS485
Medium Shielded twisted cable
Network configuration Bus (however, tree type when a repeater is used)
Data link method • Token passing method (master side)

• Polling method (master/slave side)

Transmission encoding method NRZ

Transmission speed Transmission distance [m/segm ent ]

Maximum transmission distance

when 3 repeaters are used

[m/network]

9.6 [kbps]

19.2 [kbps] 1200 4800
Transmission speed/maximum 93.75 [kbps]
transmission distance *1 *2 187.5 [kbps] 1000 4000

500 [kbps] 400 1600

1.5 [Mbps] 200 800

3 [Mbps]
6 [Mbps] 400

12 [Mbps] 100 *3
Maximum number of repeaters/network 3 units *2
Maximum number of stations/segm ent 32 stations * 3 (See "Point ")
Maximum number of slave stat ions / m as t er

station

60 slaves
Number of connection nodes (number of

repeaters)

32, 62 (1), 92 (2), 126 (3)

Transmittable data

32 bytes/1 station (Normal service mode)

244 bytes/1 station (Extemded service m ode)

Number of occupied I/O 32 points (I/O allocation : special 32 points)
5VDC Internal current consumption 0.54 A 0.56 A
Noise durability, dielectric withstand voltage

insulation resistor

Depending on the AJ71PB92D/A1SJ71PB92D installation system power supply module

specifications. (refer to the CPU Module User's Manual. )

External dimensions

250 mm (9.84 in.)(H) × 37.5 mm (1.48 in.)(W)

× 106 mm (4.17 in.)(D)

130 mm (5.12 in.)(H) × 34.5 mm (1.36 in.)(W)
× 93.6 mm (3.69 in.)(D)

Weight 0.37 kg 0.27 kg

*1 Transmission speed control within +/- 0.3% (PROFIBUS part 1)
*2 Distance that the transmission distance can be expanded by (m/network) using repeaters

Maximum transmission distance (m/network) = (number of repeaters + 1) × transmission distance (m/segment)

*3 The *3 restriction will cease to exist when the system is configured exclusively by the master and slave stations of

the hardware version B or later versions.

Point

*3 When using 12Mbps transmission speed, restriction of the cable length and the number of connector stations

described below is necessary.

1) Minimum length of the cable between stations is greater than or equal to one meter.

2) Maximum number of the connection stations are smaller than or equal to 11.

Master Slave Slave Slave Slave

2)

1)1) 1)

100

Transmission specification

s

3. SPECIFICATIONS MELSEC-A

3-3

3.3 Network Configuration

3.3.1 Basic configuration

1) Equipment types

• Class 1 master

• Configurator

• Slave

• Repeater

2) Number of units that can be connected to the entire network (when repeaters are used)
Master+slave ≤ 126 units

3) Number that can be connected for 1 segment
Master+slave+repeaters ≤ 32 units

4) Communications can be conducted via a maximum of 3 repeaters from an arbitrary master or

arbitrary slave to an arbitrary master or arbitrary slave (Not 3 units in the entire network).

5) The maximum number of slaves that can be connected to 1 AJ71PB92D/A1SJ71PB92D is 60

stations.

CPU module

Master (class 1)
AJ71PB92D
A1SJ71PB92D

Configurator

Slave Slave Slave

• The PROFIBUS-DP cable is provided by the user.

3. SPECIFICATIONS MELSEC-A

3-4

3.3.2 Applicable configuration

1) When 1 master (class 1) station is connected

Master (class 1)
AJ71PB92D
A1SJ71PB92D

CPU mlodule

Configurator

Slave

Slave Slave

Station No. 1 Station No. 2 Station No. 31

*: A maximum of 32 stations can be connected to 1 segment.

2) When 1 master (class 1) station and 1 repeater are connected

Master (class 1)
AJ71PB92D
A1SJ71PB92D

CPU module

Configurator

Slave
Station No. 1

Slave
Station No. 2

Slave
Station No. 30

Slave
Station No. 31

Slave
Station No. 32

Slave
Station No. 60

Repeater

*: In the above configuration a maximum of 60 slaves can be connected.

3. SPECIFICATIONS MELSEC-A

3-5

3) When 1 master (class 1) station and 3 repeaters are connected

Master (class 1)
AJ71PB92D
A1SJ71PB92D

CPU module

Configurator

Slave
Station No. 19

Slave
Station No. 35

Slave
Station No. 36

Slave
Station No. 44

Slave
Station No. 45

Slave
Station No. 60

Slave
Station No. 1

Slave
Station No. 2

Slave
Station No. 18

Repeater

Repeater

Repeater

*: In the above configuration a maximum of 60 slaves can be connected. The difference between

this configuration and the one in 2) is that the possible communication distance can be
extended.

3. SPECIFICATIONS MELSEC-A

3-6

4) When 126 master (class 1) and slave stations are connected

(When 60 or more slaves are connected)

CPU module

Slave
Station No. 1

Slave
Station No. 19

Slave
Station No. 56

Slave
Station No. 57

Slave
Station No. 85

Slave
Station No. 86

Slave
Station No. 107

Slave
Station No. 108

Slave
Station No. 123

Slave
Station No. 14

Slave
Station No. 15

Slave
Station No. 18

Repeater

Repeater

Repeater

1st master
(class 1)

2nd master
(class 1)

3rd master
(class 1)

: This slave is controlled by t he 1st master (class 1).

: This slave is controlled by t he 2nd master (class 1).

: This slave is controlled by t he 3rd master (class 1).

Repeater

*: In the above configuration a maximum of 123 slave stations can be connected.

3. SPECIFICATIONS MELSEC-A

3-7

Point

In configurations that use multiple master stations (multimaster configuration), when reconnecting
a cable after disconnecting a PROFIBUS cable for 1 master that is exchanging data at a low baud
rate, the communications of the master for which the cable is not disconnected could stop and
the slave output could be turned off. To prevent this, the master PROFIBUS cable must be
secured with a screw.

In addition, there is a high possibility that the above phenomena can be avoided if care is taken
with the following points when configuring a system.

(1) Set the slave watchdog timer setting value to larger than (T

T

r × G)/BR. However,
TTr : Target token rotation time (Unit: Bit Time)
G : Gap update factor
BR : Baud rate (Unit: bps)

(2) Use a high baud rate.
(3) The HSA (Highest Station Address) value is made to match the maximum station No. that is

actually connected.

3. SPECIFICATIONS MELSEC-A

3-8

3.3.3 Number of connectable slaves

Please calculate the number of the slave which can be connected under the following
(1) and (2) conditions.

(1) Restrictions on maximum data length of slave station error

information

The maximum data length of the slave station error information that the
AJ71PB92D/A1SJ71PB92D can receive varies with the minimum station number
and maximum station number of the slave stations set in the parameters, and can
be calculated using the following expression.

Maximum data length of acceptable error information [bytes] = Min

12600
N - 10

, 244

N = Min((a - b + 1) 5, 300)
a: Maximum station number of slave station

b: Minimum station number of slave station

: Min(a, b) = A or B, whichever is smaller

If the maximum data length (Max_Diag_Data_Len) of the error information
described in the GSD file of a slave station is greater than the value calculated by
the above expression, normal communication may not be made with that slave
station.
If normal communication cannot be made, try the following methods:
(a) Set the station numbers of the slave stations with no unused numbers in

between.

(b) Make setting on the slave station side to shorten the maximum data length of

the error information. (If possible)

(c) Using two or more AJ71PB92D/A1SJ71PB92D, reduce the number of slave

stations per module.

(2) Restrictions on parameter data length of slav e stati on

The parameter size which can be set in AJ71PB92D/A1SJ71PB92D should meet
the following formula.
Note that the system construction which does not meet the following formula
causes the error of 1302

H

.

5 +

i = 1

n

(number of parameter blocks of each slave station) 128

n = number of slave stations
(number of parameter blocks of each slave station) = sum total of the numbers of parameter
blocks calculated by each slave station

3. SPECIFICATIONS MELSEC-A

3-9

The number of parameter blocks for each station is decided by the parameter size
of the station as follows.

Parameter size of each
slave station

Number of blocks of each

slave station
246 bytes or less 1 block
247 to 480 bytes 4 blocks
481 to 720 bytes 5 blocks
721 to 762 bytes 6 blocks

Calculate the parameter size of each slave station using the following formula.
Parameter size of each slave station = 31 + (User_Param data length)

+ (configuration data length) +

(a) User_Param data length

The value of User_Prm_Data usage on the screen displayed when Select
Modules is selected on the slave station setting screen of GX Configurator­DP.

(b) Configuration data length

The value differs depending on the slave station type as shown below.

1) Module type slave station
Sum of the number of Module set values, which are described in the
GSD file of the slave station, of the modules registered to the [slot]
Installed Module list.

SD file descriptio n

Module="1 Word In,con word" 0x50

Module="1 Word Out,con word" 0x60

Number of set values is "1"

Number of set values is "1"

Configuration
data length is
"2".

(Example) [slot] Installed Module registration status of GX Configurator-DP

2) Block type slave station
Number of Module set values described in the GSD file of the slave
station.

(Example) GSD file description

Module="1 Byte Out,3 Byte In" 0x20,0x12

As the number of set values
is "2", the configuration data
len

g

th is "2".

3. SPECIFICATIONS MELSEC-A

3-10

(c)

(constant)

= 2 : When the slave station has only input or output
= 4 : When the slave station has both input and output

(example)
When the system is constructed using only the stave stations with 520 bytes
parameter, AJ71PB92D/A1SJ71PB92D can be connected up to the following
number of the slave stations.
When the parameter size is 520 bytes, the number of the parameter block is five.

5 + (5

n) 128 : n = number of slaves

n = 24.6

128 - 5

5

n = 24

The calculation mentioned above tells that AJ71PB92D/A1SJ71PB92D can be
connected up to 24 slave stations.
Therefore, when 25 slave stations or more are set by the parameter,
AJ71PB92D/A1SJ71PB92D detects the error of 1302

H

.

4. FUNCTIONS MELSEC-A

4-1

4. FUNCTIONS

4.1 Functions for Exchanging with Slaves

The main function in the AJ71PB92D/A1SJ71BP92D is for exchanging I/O data with slave stations
connected to the PROFIBUS-DP network. The method used for this exchange is to read/write the I/O
image in the buffer memory using FROM/TO instructions.
A schematic drawing of this exchange function is as follows.

CPU module

AJ71PB92D/

A1SJ71PB92D

(Class 1 master)

FROM

TO

Buffer memory

Input
image

Output
image

Input
image

Output
image

Input image Input image

Output image

Output image

PROFIBUS-DP network

Slave stati on

4.1.1 Exchange flow

The I/O data exchange flow with slave station is shown below.
* The buffer memory refresh with the FROM/TO instructions is conducted asynchronously.

Set the slave troubl e in fo rm ation cancel area.
(Setting is unnecessary if the default value can be left
unchanged.)

Communication trouble area type selection
(This setting is unnecessary if the default value can
be left unchange d.)

Write the initial OUTPUT dat a value in
the output area.

Turn ON the exchange start request signal (Y00).

Check that the exchange start/end
signal (X00) is ON.

Read the input dat a from the input area
using the FROM instruction.

Write the OUTPUT data in the output area in the
buffer memory using the TO instruction.

4. FUNCTIONS MELSEC-A

4-2

4.1.2 Global control functions

Global control contains the four functions of SYNC, UNSYNC, FREEZE, and UNFREEZE, which are
functions that are used to maintain/cancel slave I/O for which multicast communication is conducted at
the same time.
The slaves that execute the global control function are those located in one or more groups of the
eight groups. The group No. of the group containing the slaves is set by the configurator. In the
AJ71PB92D/A1SJ71PB92D the group can be arbitrary specified and the global control commands
transmitted using multicast communication. This makes is possible to select a slave and conduct
global control.

Master

PROFIBUS-DP network

Group 1

Group 5

The global control function is executed using X, Y, and FROM/TO instructions from the sequence
program.

(1) Service SYNC, UNSYNC

Master
(SYNC transmission to group 1)

Output data

SYNC

(Group 1) (Group 2)

(Group 1)

(Group 1)

Slave 1 Slave 2 Slave 3 Slave n

Output image memory: Data is always refreshed using polling.

<During UNSYNC execution/default>The output image memory value is output unchanged
(normal condition)

<During SYNC execut ion>The output image memory value is only output once during the
SYNC service timing.

Service SYNC (issued in the same group)

4. FUNCTIONS MELSEC-A

4-3

(2) Service FREEZE, UNFREEZE

(Group 8)

Slave 1

(Group 3)

Slave 2

(Group 3)

Slave 3

(Group 3)

Slave n

Master
(FREEZE transmission to group 3)

Input data

FREEZE

Input image memory: The data is always refreshed by polling.

<during FREEZE cancel/default>The actual input is input to the input memory unchanged
(normal condition)

<during FREEZE execute>The actual input is input once into the input image memory at the FREEZE
service timing.

Service FREEZE (issued within the same group)

(3) Group selection

• The number of groups is from 1 to 8 if with a total of 8 groups.

• The slave can exist in arbitrary group of the 8 groups. They can also exist in multiple groups.

(The configurator specifies in which group which slaves exist.)

• Multiple groups can be arbitrarily selected from the sequence program and global control
executed.

• When selecting group 0 and transmitting the service is transmitted to all slave stations.

Master
(transmitted to
groups 1 and 2)

PROFIBU S-DP network

Slave

Group 1

Group 5

Group 2

Group 8