HINT 
When the MELSECNET/H network is connected to the redundant system only, SW56 (current control station) can be set as the station number switching device.
In this case, even if the system switching occurs, the GOT always monitors the station number that is currently the control station.
Setting method (Ethernet connection)
System configuration example 2: Ethernet connection
Ethernet
Network No. 1
Station No. 3 GOT
Control system |
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| QJ71 |
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Connected module |
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Ethernet module of control system |
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Ethernet module of standby system |
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GOT connected to the Ethernet network |
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1. Set the station number switching device. |
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Select [Common] | [Controller Setting] | [Station No. Switching], and set the internal device GD100 as 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 status observation may be disabled.
Set here.
4 - 34 | 4. HOW TO MONITOR REDUNTANT SYSTEM |
| 4.10 Switch the Monitor Target to the Control System Using the Script Function |