Mitsubishi FX3U-485-BD User Manual

C-37
FX Series PLC User's Manual - Data Communication Edition
Parallel Link
7 Creating Programs
7.1 Regular Parallel Link Mode
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter Communication
F
Non-Protocol Communication (RS/RS2 Instruction)
G
Non-Protocol Communication (FX
2N
-232IF)
H
Programming Communication
I
Remote Maintenance
Apx.
Discontinued models
7. Creating Programs
The parallel link has two modes, regular parallel link mode and high speed parallel link mode.
Program settings and the number of device to be used are different in each mode.
When connecting FX PLCs in the parallel link, use the same mode in both PLCs.
7.1 Regular Parallel Link Mode
This section explains the program setting method in the regular parallel link mode.
7.1.1 Checking contents of related devices
The tables below show devices used in the parallel link.
1. Devices for setting the parallel link
These devices are used for setting the parallel link. The setting of these devices is essential to use the
parallel link.
2. Devices for judging errors in the parallel link
These devices are used for judging errors in the parallel link. Use them to output link errors to the outside and
interlock sequence programs.
Device Name Description
M8070
Parallel link master station
declare
Set this device to ON when linking a PLC as the master station.
M8071
Parallel link slave station
setting
Set this device to ON when linking a PLC as the slave station.
M8178 Channel setting
Set the channel of communication port to be used (in the FX
3G,
FX
3U and FX3UC).
When this device is OFF: ch1
When this device is ON: ch2
D8070 Error judgement time (ms)
Set the time for judging error in the parallel link data communication.
[Initial value: 500]
Device Name Description
M8072 Parallel link ON This device remains ON while the parallel link is executed.
M8073
Master/slave station setting
error
This device turns ON when there is an error in the setting of the
master station or slave station.
M8063 Link error This device turns ON when a communication error occurs.

Mitsubishi FX3U-485-BD Specifications

General

Brand	Mitsubishi
Model	FX3U-485-BD
Category	Controller
Language	English