Combinations Of Cpu Modules In A Multiple Cpu System - Mitsubishi Electric MELSEC iQ-R Series Configuration Manual

Combinations of CPU modules in a multiple CPU system

The CPU modules that can be used in the multiple CPU system differ depending on what type of CPU module is mounted as
CPU No.1.
The following table summarizes the possible combination of CPU modules and the number of mountable modules in the
multiple CPU system.
CPU module mounted as
CPU No.1
RnCPU
*9
RnENCPU
Process CPU (process mode)
*8
C Controller module
*1 Under the multiple CPU system configuration, online module change is not permitted.
*2 The RnENCPU or the Safety CPU must be mounted at the rightmost position of the block of CPU modules.
*3 Set the Safety CPU as a control CPU of the safety function module, which is mounted on the right of the Safety CPU.
In a multiple CPU system, the safety function module is automatically controlled by the Safety CPU in the following cases.
 The module configuration diagram or I/O assignment setting for a single CPU system is set to the Safety CPU.
 No parameter is set to the Safety CPU.
If the module configuration diagram or I/O assignment setting for a multiple CPU system is set to the Safety CPU, the safety function
module is controlled by the CPU module set in the module configuration diagram or I/O assignment setting.
*4 The C Controller module and the Safety CPU cannot be used together.
*5 If the following function is executed in the system where the Safety CPU and the RnCPU with a firmware version "11" or earlier are used,
the model of the base unit cannot be displayed.
 System monitor
 [Online]  [Read Module Configuration from PLC] when the "Module Configuration" window is displayed
 "Read Mounting Status" of the [I/O Assignment] tab on the "System Parameter" window
*6 The Motion CPU, the NCCPU, and the Safety CPU cannot be set as CPU No.1.
*7 If a multiple CPU system is configured in these combinations and "Enable" is set in "Direct change setting" of "CPU Parameter" for the
Process CPU No.1 (process mode), an error occurs. To prevent the error, set "Disable" in "Direct change setting".
*8 When the C Controller module is used in combination with the Process CPU, use the C Controller module with firmware version "04" or
later.
*9 When a multiple CPU system is configured, use an RnENCPU that has the firmware version "25" or later, a Motion CPU that has the
firmware version "10" or later, and the engineering tool version "1.032J" or later. ( Page 58 Precautions for the case where an
RnENCPU is set as CPU No.1).
*10 The RnENCPU and the Safety CPU cannot be used together.
A Process CPU (redundant mode) cannot be used in a multiple CPU system.
Number of CPU modules that can be mounted as CPU No.2 and later
*9
RnCPU RnENCPU Process CPU
(process mode)
*2*10 *1
0 to 3 0 to 1 0 to 3
0 0 0
*1*7 *2*10
0 to 3 0 to 1 0 to 3
*2
0 to 3 0 to 1 0 to 3
*6
Motion NCCPU C Controller
*6
CPU module
*4
0 to 3 0 to 3 0 to 3
*9
1 to 3 0 0
*1*7 *4
0 to 3 0 0 to 3
0 to 3 0 0 to 3
1 SYSTEM CONFIGURATION
1.2 System Configuration Specifications
Safety
*8 *6
CPU
*2*3*4*5*10
0 to 1
0
*2*3*4*10
0 to 1
0
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1