When Using A Multiple Cpu System - Mitsubishi Electric QJ71LP21 Reference Manual

2 SYSTEM CONFIGURATION

2.6 When Using a Multiple CPU System

(a) CPU No. 1 controls all master modules
CPU CPU QJ71
No. 1 No. 2 BR11
(c) CPU No 1 to No. 4 control each master module
CPU CPU CPU CPU
No. 1 No. 2 No. 3 No. 4
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Take the following points into consideration when configuring a remote I/O network by
utilizing multiple CPU system.
(1) Use the master module of function version B or later.
(2) Set the network parameters to the control CPU controlling the master module.
(3) It is possible to set up to four master modules per control CPU. Note that the
maximum number of mountable master modules per multiple CPU system is
four.
QJ71 QJ71 QJ71
BR11 BR11 BR11
QJ71 QJ71 QJ71 QJ71
BR11 BR11 BR11 BR11
(b) CPU No. 1 and CPU No. 2 control each master
module
QJ71
CPU CPU
No. 1 No. 2 BR11
(d) The maximum number of mountable master
modules per system is four
CPU CPU QJ71
BR11
No. 1 No. 2
The number of mounted modules exceeds the limit by one.
MELSEC-Q
QJ71 QJ71 QJ71
BR11 BR11 BR11
QJ71 QJ71 QJ71 QJ71
BR11 BR11 BR11 BR11
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