Mitsubishi FX3U-232-BD User Manual page 189

FX Series PLC User's Manual - Data Communication Edition
Parallel Link
7.2 High Speed Parallel Link Mode
This section explains the program setting method in the high speed parallel link mode.
7.2.1 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. Setting of these devices is essential in using the parallel
link.
Device
M8070
M8071
M8162
M8178
D8070
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
M8072
M8073
M8063
3. Link devices
1) Sending devices for the master station
These devices are used for sending the information from the master station to the slave station.
To prevent malfuntions, do not change the setting of these devices in the slave station.
The device numbers used and number of devices vary depending on the PLC type. For applicable
devices, refer to the tables below.
a) For FX (FX), FX
2
Word device
b) For FX
1S
Word device
Name
Parallel link master station
declare
Parallel link slave station
declare
High speed parallel link
mode
Channel setting
Error judgement time (ms)
Name
Parallel link ON
Master/slave station setting
error
Link error
, FX , FX , FX
2C 1N 2N 3U
Number of
Device
devices
D490, D491
or FX Series
0N
Number of
Device
devices
D230, D231
Description
Set this device to ON when linking a PLC as the master station.
Set this device to ON when linking a PLC as the slave station.
Set this device to ON when using the high speed parallel link mode.
Set the channel of communication port to be used (in the FX
FX ).
3UC
When this device is OFF: ch1
When this device is ON: ch2
Set the time for judging error in the parallel link data communication.
[Initial value: 500]
Description
This device remains ON while the parallel link is executed.
This device turns ON when there is an error in the setting of the
master station or slave station.
This device turns ON when a communication error occurs.
, FX , FX or FX
1NC 2NC 3UC
The devices in the slave station are automatically updated
2
to the status of devices in the master station.
The devices in the slave station are automatically updated
2
to the status of devices in the master station.
7 Creating Programs
7.2 High Speed Parallel Link Mode
Series
Description
Description
A
B
C
D
and
3U
E
F
G
H
I
Apx.
C-39