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Installation Position Of Cpu Module - Mitsubishi Electric MOTION CONTROLLERS Q172DCPU Programming Manual

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2 MULTIPLE CPU SYSTEM

2.1.2 Installation position of CPU module

Number of
CPUs
CPU
Power
QnUD(H)
supply
CPU
2
CPU
No.1
CPU
Power
QnUD(H)
supply
CPU
3
CPU
No.1
CPU
Power
QnUD(H)
supply
CPU
4
CPU
No.1
(Example 1)
CPU
0
Power
QnUD(H)
CPU
supply
CPU
empty
CPU
CPU
No.1
No.2
Up to four PLC CPUs and Motion CPUs can be installed from the CPU slot (the right
side slot of the power supply module) to slots 2 of the main base unit.
The Motion CPU module cannot be installed in the CPU slot.
The PLC CPU module must be installed in the CPU slot (CPU No.1) in the Multiple
CPU system.
There is no restriction on the installation order for CPU modules (CPU No.2 to 4).
(Note): Refer to the manual for each CPU module when the High performance PLC
CPU module, Process CPU module, PC CPU module and C controller module
is mounted in the combination of Multiple CPU.
Table 2.1 Example for CPU module installation
0
1
2
Q17 D
CPU
CPU
CPU
CPU
No.2
No.3
No.4
0
1
2
Q17 D
QnUD(H)
CPU
CPU
CPU
CPU
CPU
No.2
No.3
No.4
0
1
2
Q17 D
QnUD(H)
CPU
empty
CPU
CPU
CPU
CPU
CPU
No.2
No.3
No.4
An empty slot can be reserved for future addition of a CPU module.
Set the number of CPU modules including empty slots in the Multiple CPU setting, and
set the type of the slots to be emptied to "PLC (Empty)" in the CPU setting.
(Example 2)
1
2
Q17 D
Power
CPU
supply
CPU
CPU
No.3
No.4
Installation position of CPU module
——
CPU
0
1
Power
QnUD(H)
Q17 D
Q17 D
supply
CPU
CPU
CPU
CPU
CPU
CPU
No.1
No.2
No.3
CPU
0
1
Power
QnUD(H)
Q17 D
Q17 D
supply
CPU
CPU
CPU
CPU
CPU
CPU
No.1
No.2
No.3
CPU
0
1
2
QnUD(H)
CPU
Q17 D
CPU
CPU
empty
CPU
empty
CPU
CPU
CPU
CPU
No.1
No.2
No.3
No.4
2 - 2
——
2
——
CPU
No.4
2
CPU
QnUD(H)
Power
QnUD(H)
Q17 D
CPU
supply
CPU
CPU
CPU
CPU
CPU
No.4
No.1
No.2
CPU
0
1
(Example 3)
CPU
0
Power
QnUD(H)
CPU
supply
CPU
empty
CPU
CPU
No.1
No.2
0
1
2
Q17 D
Q17 D
CPU
CPU
CPU
CPU
No.3
No.4
2
: Slot number
1
2
CPU
Q17 D
empty
CPU
CPU
CPU
No.3
No.4

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