Precautions When Using Network Modules In The Multiple Cpu System - Mitsubishi Electric Melsec QJ71LP21 Reference Manual

2 SYSTEM CONFIGURATION

2.2.2 Precautions when using network modules in the multiple CPU system

(a) CPU No.1 controls all network modules.
CPU CPU
No.1 No.2
(c) CPU No.1 to CPU No.4 control each network module.
CPU CPU CPU
No.1 No.2 No.3
2 - 11
Pay attention to the following points when configuring a MELSECNET/H network
system with a multiple CPU system.
(1) Set the network parameters in the control CPU that controls the network
modules.
(2) A maximum of four network modules can be set for each control CPU module.
Note that a total of four network modules can be mounted in the multiple CPU
system.
QJ71 QJ71 QJ71 QJ71
BR11 BR11 BR11 BR11
CPU QJ71 QJ71 QJ71
No.4
BR11 BR11 BR11
(b) CPU No.1 and CPU No.2 control network modules
separately.
CPU
No.1
(d) Up to 4 network modules can be mounted on the system.
CPU
QJ71
No.1
BR11
: The number of modules exceeded the limit.
CPU QJ71 QJ71 QJ71
No.2
BR11 BR11 BR11
CPU QJ71 QJ71 QJ71
No.2
BR11 BR11 BR11
MELSEC-Q
QJ71
BR11
QJ71 QJ71
BR11 BR11
2 - 11