Mitsubishi Electric GOT2000 Series, Connection Manual

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4.2 MELSEC Q Series
4.2.1 Connection to Remote I/O Station in MELSECNET/H Network System
■1.
Direct CPU connection (Direct CPU connection to the remote I/O station)
This section explains the direct CPU connection that connects the GOT to the remote I/O station of the MELSECNET/
H network system.
The following shows an example of connecting the GOT to the remote I/O station of the MELSECNET/H network
system.
(1) Connection method
Connect the GOT to the RS-232 interface of the network module (QJ72LP25-25, QJ72LP25G, QJ72BR15) on the
remote I/O station of the MELSECNET/H network system.
For details, refer to the following.
➠
6. DIRECT CONNECTION TO CPU
(2) GT Designer3 setting
Set GT Designer3 as follows.
In this case, the GOT monitoring is performed by transient transmission of the MELSECNET/H network system.
Therefore, a longer time-lag occurs for displaying objects compared with directly monitoring the PLC CPU.
For displaying objects with a shorter time-lag, set the device for link devices B and W of the host station set in the
MELSECNET/H network and execute the cyclic transmission.
For details, refer to the following manual.
➠
Q Corresponding MELSECNET/H Network System Reference Manual (Remote I/Q network)
(3) Monitoring target change when system switching occurs in a redundant system
When the system switching occurs, the multiplexed remote sub master station switched to the control system takes
over the master operation of MELSECNET/H.
Since the GOT monitors the master station, the monitoring target is automatically changed to the PLC CPU that is
operating as the master.
Setting item Settings Model
Controller Type MELSEC-Q/QS, Q17nD/M/NC/DR, CRnD-700
Device setting (Network setting) Other
NW No.: Network No. of MELSECNET/H remote I/O network
Station No.: 0 (Master station)
MELSEC Redundant Setting Do not set the item.
Monitor target
MELSECNET/H remote I/O network
CPU direct connection
GOT
Network No. 1, Station No. 0
(Multiplexed remote master station)
Control system
(System A)
Q25PRHCPU QJ71LP21-25
QJ71BR1
1
QJ71E71-100
QJ61BT1
1N
Network No. 1, Station No. 1
(Multiplexed remote sub master station)
Standby system
(System B)
Q25PRHCPU QJ71LP21-25
QJ71BR1
1
QJ71E71-100
QJ61BT1
1N
QJ72LP25-25
QJ71C24N
Network No. 1, Station No. 2
(Remote I/O station)
Empty Empty
Power supply module
Empty
Power supply module
Empty
Power supply module