Mitsubishi Electric GT15, Connection Manual

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4. HOW TO MONITOR REDUNTANT SYSTEM
4.5 MELSECNET/H and MELSECNET/10 Connections (Network Systems)
4.5 MELSECNET/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.
(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.
(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 POINT 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
Setting item Settings Model
Controller Type MELSEC-QnA/Q/QS, MELDAS C6*
Device setting (Network setting) Other
NW No.: Network No. of MELSECNET/H PLC to PLC network
Station No.: Station number of the control system
Q Redundant Setting
4.9 Q Redundant Setting
Monitor target
MELSECNET/H remote I/O network
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GOT
Network No. 1, Station No. 1
(Control station)
Control
system
(System A)
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Q25PRHCPU QJ71LP21-25 QJ71BR1
1
QJ71E71-100 QJ61BT1
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Standby
system
(System B)
Q25PRHCPU QJ71LP21-25 QJ71BR1
1
QJ71E71-100 QJ61BT1
1N
QJ72LP25-25 QJ71C24N
Network No. 1, Station No. 3 (Normal station)
Network No. 1, Station No. 2
(Normal station)
MELSECNET/H PLC to PLC network
(MELSECNET/H mode or
MELSECNET/10 mode)
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