Single Cpu System; Multiple Cpu System - Mitsubishi Electric MELSEC iQ-R Series Configuration Manual

Single CPU system

This system controls I/O modules and intelligent function modules with a single CPU module mounted on a main base unit.
CPU module

Multiple CPU system

This system requires multiple CPU modules, and each CPU module controls I/O modules and intelligent function modules.
( Page 78 Control CPU)
Configure a multiple CPU system in the following cases:
• To execute the high-accuracy motion control by using a Motion CPU in a system
• To execute the high-accuracy NC control by using the NCCPU in a system
• To shorten the scan time of the entire system by distributing the control of I/O modules and intelligent function modules with
multiple CPU modules
The CPU module can only be mounted on the main base unit, and the maximum number of mountable CPU modules is four.
( Page 55 Combinations of CPU modules in a multiple CPU system,  Page 76 CPU Numbers)
For details on the multiple CPU system function, refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
CPU module
1 1 2 3 3 4 1 1 1 1 2 3 3 4
1 SYSTEM CONFIGURATION
1.1 Overall Configuration
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