Mitsubishi Electric MELSEC Q Series Reference Manual page 192

(c) When the network contains a station of a Basic model QCPU or safety CPU
It is recommended to use "LB/LW Setting(2)" when a station on the network has a Basic model CPU or safety
CPU.
A setting example for "LB/LW Setting(1)" and "LB/LW Setting(2)" is shown below.
Item
Set each station's send range of LB/LW, which is shared by all
LB/LW Setting(1)
stations.
Set each station's send range of LB/LW, which is shared by
LB/LW Setting(2)
stations of Universal model QCPUs.
Network range
assignment
LB/LW settings
LB0 to LB7FF
LB800 to LBFFF
LB1000 to LB17FF
LB1800 to LB1FFF
LB3FFF
LB7FFF
LW0 to LW7FF
LW800 to LWFFF
LW1000 to LW17FF
LW1800 to LW1FFF
LW3FFF
LW10000 to LW10FFF
LW11000 to LW11FFF
LW1FFFF
190
Description
Universal model
QCPU
Control station
No.1
Link relay (LB)
No.1
No.1 send range
No.2 No.2
No.3 No.3
No.4 No.4
Link register (LW)
No.1 No.1 send range
No.2 No.2
No.3 No.3
No.4 No.4
No.1 No.1 send range
No.4
No.4
Station No.
LB/LW shared by station
No.1 to No.64
LB/LW shared by station
No.1 to No.120
Basic model
Safety CPU
QCPU
Normal station Normal station
No.2 No.3
No.1 No.1
No.2 send range No.2
No.3
No.3 send range
No.4 No.4
No.1 No.1
No.2 send range No.2
No.3
No.3 send range
No.4 No.4
Target range
Setting range
LB0 to 3FFF
LW0 to 3FFF
LB4000 to 7FFF
LW4000 to 1FFFF
Universal model
QCPU
Normal station
No.4
No.1
No.2
Setting range
No.3
of LB/LW
No.4 send range
setting (1)
Setting range
of LB/LW
setting (2)
No.1
No.2
Setting range
No.3
of LB/LW
No.4 send range
setting (1)
Setting range
No.1
of LB/LW
No.4 send range
setting (2)