Mitsubishi Electric GOT2000 Series Connection Manual page 252

Step 1.
Set the station number switching device.
Select [Common]
the station number switching device.
Do not use a device of PLC CPU as a screen switching device. Since the device information is transferred
by the tracking transfer function of the redundant system, the trigger action may be disabled.
Step 2.
Set the trigger action.
Make the settings so that the station number is switched when the faulty station information (SW70) of
MELSECNET/H turns ON in the project specified by selecting [Common]
Condition 1 : SW70.b0 (while ON)
Operation
Condition 1 : SW70.b1 (while ON)
Operation
Create the trigger action in the project on the Project tab.
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4.2 MELSEC Q Series
[Controller Setting]
: GD100=2
: GD100=1
POINT POINT POINT
Setting for the trigger action function
For the trigger action function, hexadecimals cannot be used.
To use the trigger action function, set the N/W No. and the station No. of the PLC CPU in
[Unsigned BIN].
(For the trigger action function, set [Unsigned BIN] for [Storing Device])
Example:
When N/W No.: 1 and Station No.: 1 (0101H)
Set "257".
When N/W No.: 10 and Station No.: 10 (0A0AH)
Set "2570".
[Station No. Switching], and set the internal device GD100 as
When b0 is ON, Station No. 1 is abnormal.
Station No. is changed to 2.
When b1 is ON, Station No. 2 is abnormal.
Station No. is changed to 1.
Set here.
[trigger action].