Mitsubishi Electric MELSEC Q Series Reference Manual page 65

(4) Precautions
(a) When Basic model QCPU and/or safety CPU exist on the network
• Cyclic transmission through stations on which Basic model QCPU or a safety CPU is mounted
Cyclic data are transferred between each station's send range in LB/LW set in "LB/LW Setting(1)" and the
corresponding station allocated within the range of LB/LW 0 to 3FFF.
Universal model
QCPU
Control station
No.1
Link register (LW)
LW0
No.1 send range
No.2
No.3
No.120
LW3FFF
No.1 send range
No.120
LW1FFFF
• Station on which Basic model QCPU or a safety CPU is mounted receives data from another station.
If another station's data is set over the limit of LB/LW4000, only the data up to LB/LW3FFF can be
received.
Universal model
QCPU
Control station (No.1)
Link register (LW)
LW0
No.1 send range
No.2
No.3
LW4000
No.4
LW1FFFF
Basic model QCPU
Safety CPU
Normal station Normal station
No.2 No.3
No.1 No.1
No.2 send range No.2
No.3 No.3 send range
Universal model
QCPU
Normal station (No.2)
No.1
No.2 send range
No.3
No.4
Universal model
QCPU
Normal station
No.120
No.1
No.2
No.3
No.120 send range
No.1
No.120 send range
Universal model
Basic model QCPU
QCPU
Normal station (No.3) Normal station (No.4)
No.1 No.1
No.2 No.2
No.3 send range No.3
No.4 No.4 send range
Unable to receive another station's
data in LW4000 or higher.
CHAPTER 4 FUNCTIONS
Setting range of
LB/LW settings (1)
Setting range of
LB/LW settings (2)
63
4