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4. HOW TO MONITOR REDUNTANT SYSTEM
4.10 Switch the Monitor Target to the Control System Using the Script Function
4 - 35
1
PREPARATORY
PROCEDURES FOR
MONITORING
2
DEVICE RANGE
THAT CAN BE SET
3
ACCESS RANGE
FOR MONITORING
4
HOW TO MONITOR
REDUNTANT
SYSTEM
5
BUS CONNECTION
6
DIRECT
CONNECTION TO
CPU
7
COMPUTER LINK
CONNECTION
8
ETHERNET
CONNECTION
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] [Status Observation] turns ON.
(For Network No. 1 and Station No. 2, set "258"(0102H))
Create the status observation in the project on the Project tab.
POINTPOINTPOINT
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.
Condition 1 : GS231.b0 (while ON) When b0 is ON, Station No. 1 is abnormal.
Operation : GD100=258(0102H) Station No. is changed to 2.
Condition 1 : GS231.b1 (while ON) When b1 is ON, Station No. 2 is abnormal.
Operation : GD100=257(0101H) Station No. is changed to 1.