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4.2 MELSEC Q Series
■2.
When using two GOTs
Connect a GOT to each PLC CPU to respond to the system switching.
(1) Connection method
Connect GOTs to the RS-232 interface of the control system and standby system CPU modules (Q12PRHCPU,
Q25PRHCPU) of the redundant system.
For details, refer to the following.
➠
(2) GT Designer3 setting
Set GT Designer3 as follows.
(3) Monitoring target change when system switching occurs in a redundant system
When the system switching occurs, the GOT cannot change the monitor target automatically in response to the
system switching.
The GOT that is connected to the control system CPU module after system switching continues the monitoring.
Different from the case using one GOT, no cable reconnection is required.
POINT
POINT
POINT
To automatically change the monitoring target after system switching using one GOT, make the
MELSEC redundant settings.
➠
Setting item
Settings
Model
Controller Type
MELSEC-Q/QS, Q17nD/M/NC/DR, CRnD-700
Device setting (Network setting)
Host
MELSEC Redundant Setting
➠
Monitor
target
Network No. 1, Station No. 0
(Multiplexed remote master station)
Network No. 1, Station No. 1
(Multiplexed remote sub master station)
Network No. 1, Station No. 2
(remote I/O station)
Power supply
module
Power supply
module
Power supply
module
MELSECNET/H remote I/O network
CPU direct connection
GOT1
Control system
(System A)
Empty
Q25PRHCPU
QJ71LP21-25
QJ71BR1
1
QJ71E71-100
QJ61BT1
1N
Standby system
(System B)
QJ72LP25-25
QJ71C24N
Empty
Q25PRHCPU
QJ71LP21-25
QJ71BR1
1
QJ71E71-100
QJ61BT1
1N
Empty
Empty
CPU direct connection
GOT2
Summary of Contents for GOT2000 Series
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Page 1023: ...MULTI CHANNEL FUNCTION 21 MULTI CHANNEL FUNCTION 21 1 ...
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Page 1054: ...21 30 21 5 Multi channel Function Check Sheet ...
Page 1055: ...FA TRANSPARENT FUNCTION 22 FA TRANSPARENT FUNCTION 22 1 ...
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