4.7 Ethernet Connection
This section explains the Ethernet connection that connects the GOT to the Ethernet network system. The following shows an example of connecting the GOT to the Ethernet network.
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| Network No. 1, Station No. 3 | ||
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| GOT |
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Network No. 1, Station No. 1 |
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| Ethernet |
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Monitor target |
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| module | supplyPower | Q25PRHCPU |
| QJ71BR11 |
| QJ61BT11N |
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| QJ71BR11 | ||||||||||
Control |
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system |
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(System A) |
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| MELSECNET/H remote I/O network |
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| module | supply Power |
| QJ71C24N |
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(1)Connection method
Connect the Ethernet network system to the GOT. For details, refer to the following.
Network No. 1,
Station No. 2
QJ61BT11N | Empt | Standby |
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(2)GT Designer3 setting
Set GT Designer3 as follows.
Setting item | Settings | Model | |
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Controller Type |
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| Other (NW No. 1 (network No. of Ethernet), |
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Device setting | Other station | Station No. ** (** indicates the station number of the control system. Station No. 1, |
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(Network setting) |
| in the above example)) |
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| Host | Host |
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Q Redundant Setting |
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(3)Monitoring target change when system switching occurs in a redundant system
When system switching occurs, Ethernet module station No. 2 takes over the control of the Ethernet network system as the control system.
Since the GOT monitors the control system, he monitoring target is automatically changed to the Ethernet module station No. 2.
POINT
When monitoring control system without Q redundant setting (Only GT16, GT15 and GT14)
When system switching occurs, Ethernet module station No. 2 takes over the control of the Ethernet network system as the control system.
Since the GOT monitors the station of the specified station number, the monitoring target cannot be changed to the station No. 2 in response to the system switching.
As a countermeasure, create a screen to monitor the PLC CPU of the control system by switching the station numbers between System A and System B using the script function.
4.10 Switch the Monitor Target to the Control System Using the Script Function
4 - 24 | 4. HOW TO MONITOR REDUNTANT SYSTEM |
| 4.7 Ethernet Connection |