C-38
FX Series PLC User's Manual - Data Communication Edition
Parallel Link
7 Creating Programs
7.1 Regular Parallel Link Mode
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
3GC
,
FX
3U
and FX
3UC
).
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.
Summary of Contents for FX-485ADP
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Page 120: ...B 2 FX Series PLC User s Manual Data Communication Edition N N Network ...
Page 188: ...C 2 FX Series PLC User s Manual Data Communication Edition Parallel Link ...
Page 244: ...D 2 FX Series PLC User s Manual Data Communication Edition Computer Link ...
Page 344: ...E 2 FX Series PLC User s Manual Data Communication Edition Inverter Communication ...
Page 700: ...H 2 FX Series PLC User s Manual Data Communication Edition Programming Communication ...
Page 752: ...I 2 FX Series PLC User s Manual Data Communication Edition Remote Maintenance ...
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