Mitsubishi Electric GT1685 Connection Manual page 169

2.
Set the status observation.
Make the setting so that the station number is switched when the faulty station information (GS231) from the station
monitoring specified by selecting [Common]
(For Network No. 1 and Station No. 2, set "258"(0102H))
Condition 1 : GS231.b0 (while ON)
Operation
Condition 1 : GS231.b1 (while ON)
Operation
Create the status observation in the project on the Project tab.
POINT POINT POINT
Setting for the status observation function
For the status observation function, hexadecimals cannot be used.
To use the status observation function, set the N/W No. and the station No. of the PLC CPU in [Unsigned BIN].
(For the status observation 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".
3.
Create a monitor screen.
For MELSECNET/H connection, MELSECNET/10 connection or Ethernet connection: (Common)
In the device setting (network setting) of each object, set Network No. 1 and Station No. 1 of the control system.
4.10 Switch the Monitor Target to the Control System Using the Script Function
[Status Observation] turns ON.
When b0 is ON, Station No. 1 is abnormal.
: GD100=258(0102H) Station No. is changed to 2.
When b1 is ON, Station No. 2 is abnormal.
: GD100=257(0101H) Station No. is changed to 1.
4. HOW TO MONITOR REDUNTANT SYSTEM
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