Specifications

1 - 11
1.4.2 Multiple network system
The multiple network system is a network system in which multiple networks are
connected via relay stations.
1) The network number can be freely set within a range from 1 to 239.
2) A maximum of 4 network modules can be installed per PLC.
1
st
module
Network No.1
Network No.2
Network No.4
Network No.3
2
nd
module 3
rd
module 4
th
module
(1) Configuration
The following example shows how three networks can be connected.
Network No.1
Power supply
Control station
1M
P
1
QJ71
LP21
(-25)
QCPU
Power supply
QJ71
LP21
(-25)
QCPU QJ71
LP21
(-25)
Control station
2M
P
1
Normal station
1N
S
2
Power supply
QCPU QJ71
LP21
(-25)
Normal station
2N
S
2
Network No.2
Network No.3
Control station
3M
P1
Power supply
QJ71
LP21
(-25)
QCPU QJ71
BR11
1N
S
3
Normal station
Power supply
QJ71
LP21
(-25)
QCPU
Normal
station
2N
S
3
Power supply
QCPU QJ71
BR11
3N
S
2
Normal station
Power supply
QCPU QJ71
BR11
3N
S
3
Normal station
Power supply
QCPU QJ71
BR11
3N
S
4
Normal station