Mitsubishi MELSEC-Q Series User Manual page 118

3
CONCEPT FOR MULTIPLE CPU SYSTEM
(5) Mounting position of the C Controller module
(6) "PLC (Empty)" setting
3
- 7 3.1 Mounting Position of CPU Module
3.1.2 When CPU No.1 is High Performance model QCPU or Process CPU
Up to three C Controller modules can be mounted on slots 0 to 2 of the main base
unit.
Note that the any CPU module cannot be mounted on the right side of the C
Controller module.
An empty slot can be reserved for future addition of a CPU module.
* Select the number of CPU modules including empty slots at No. of PLC and set the type of the slots
to be emptied to "PLC (Empty)" from the right side slot of the mounted CPU module in order in the
I/O assignment screen of PLC parameter.
(Example)When 4 CPU modules have been set in the multiple CPU setting and 2
High Performance model QCPUs and one Motion CPU are to be
mounted.
Mount the High Performance model QCPUs in the CPU slot and slot 0
and the Motion CPU in slot 1, and leave slot 2 "PLC (Empty)."
Mounting allowed
CPU 0 1
POINT
When using the High Performance model QCPU or Process CPU, "PLC (Empty)"
cannot be set between CPU modules.
To add a CPU module to the system where the PC CPU module is used, move the
PC CPU module to the right to make room for the CPU module to be added.
CPU 0 1 2 3
Addition
Move to the right.
Diagram 3.11 Addition of Motion CPU when PC CPU module is mounted
2 Slot number
Diagram 3.10 "PLC (Empty)" setting
Set slot 2 to "PLC (Empty)".
Keep slot 3 empty.
4 Slot number CPU
Mounting not allowed
CPU 0 1 2
0 1 2 3 4
Slot number
Slot number