4.5MELSECNET/H and MELSECNET/10 Connections (Network Systems)
This section explains the MELSECNET/H and MELSECNET/10 connections (network systems) that connect the GOT to the MELSECNET/H and MELSECNET/10 network system.
The following provides an example of connecting the GOT set as a normal station to the MELSECNET/ H network system.
Network No. 1, Station No. 1 (Control station)
Monitor target
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Network No. 1, Station No. 3 (Normal station)
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| Network No. 1, Station No. 2 | ||||||||||||
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| MELSECNET/10 mode) |
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QJ71BR11 |
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| supplyPower module | Q25PRHCPU | QJ71BR11 |
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MELSECNET/H remote I/O network
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module | supply Power |
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(1) Connection method
Connect the MELSECNET/H network system to the GOT. For details, refer to the following.
9. MELSECNET/H CONNECTION (PLC TO PLC NETWORK)
(2) GT Designer3 setting
Set GT Designer3 as follows.
Setting item | Settings | Model | |
Controller Type |
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Device setting |
| Other (NW No. 1 (network No. of PLC to PLC network), |
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Other station | Station No. ** (** indicates the station number of the control system. Station No. 1, |
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(Network setting) |
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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, the network module station No. 2 changes from the normal station to the sub control station and takes over the control of the MELSECNET/H network system.
Since the GOT monitors the control system, the monitoring target is automatically changed to the network module station No. 2.
POINT
To monitor the control system without Q redundant setting
When system switching occurs, the network module station No. 2 changes from the normal station to the sub control station and takes over the control of the MELSECNET/H network 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 - 22 | 4. HOW TO MONITOR REDUNTANT SYSTEM |
| 4.5 MELSECNET/H and MELSECNET/10 Connections (Network Systems) |