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MELSEC-Q
2 SYSTEM CONFIGURATION
2.5 Precautions when Configuring the System
Take the following points into consideration when configuring a remote I/O net system.
(1) Remote I/O networks and PLC to PLC networks cannot be mixed on the same
MELSECNET/H network. Always configure separate networks.
(2) Only MELSECNET/H network modules can be connected to a MELSECNET/H
remote I/O network. They cannot be mixed with MELSECNET/10 network
modules.
(3) In combinations of remote I/O and PLC-to-PLC networks, up to 4
MELSECNET/H network systems can be configured per CPU module
(Q02CPU/Q02HCPU/Q06HCPU/Q12HCPU/Q25HCPU/Q12PHCPU/Q25PHCPU
/Q12PRHCPU/Q25PRHCPU).
(4) The following CPU modules and network modules are applicable to the remote
master station.
Function
CPU module
Max. No. of applicable network
modules
Multiplexed remote
I/O network for
redundant system
Multiplexed remote
I/O network
Remote I/O network
Q12PRHCPU, Q25PRHCPU 4 (including PLC-to-PLC networks) Available N/A N/A
Q12PHCPU, Q25PHCPU 4 (including PLC-to-PLC networks) N/A Available Available
Q02CPU, Q02HCPU, Q06HCPU,
Q12HCPU, Q25HCPU
1
4 (including PLC-to-PLC networks) N/A N/A Available
Q00JCPU, Q00CPU, Q01CPU Not mountable N/A N/A N/A
1 : Use a CPU module with the first 5 digits of the serial No. 02092 or later.
Applicable function version
Network module
Multiplexed remote I/O network
for redundant system
Multiplexed remote I/O network
2 or remote I/O network
QJ71LP21
QJ71LP21-25
QJ71LP21S-25
QJ71LP21G
Master module
QJ71BR11
QJ72LP25-25
QJ72LP25GRemote I/O module
QJ72BR15
Function version D or later Function version B or later
2 : When using a master module as a multiplexed remote master or sub-master
station, the first 5 digits of the serial No. must be 04012 or later.
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