Mitsubishi MELSEC-Q Series User Manual page 609

13
MULTIPLE CPU SYSTEM CONCEPT
(2) When CPU No. 1 is Basic model QCPU
CPU
The mounting position of each CPU module is shown in Table13.5.
(a) Mounting position of Basic model QCPU
Only one Basic model QCPU can be mounted on the CPU slot (slot on the right-
hand side of the power supply module) of the main base unit.
(b) Mounting position of Motion CPU
1) Only one Motion CPU (except for the Q172DCPU and Q173DCPU) can be
mounted to slot 0 on the right of the Basic model QCPU.
It cannot be mounted to other than slot 0.
2) When the main base unit is Q3 SB or Q3 DB, Motion CPUs cannot be
mounted.
(c) Mounting position of C Controller module
Only one C Controller module can be mounted at the right end of CPU modules.
No CPU can be mounted on the right side of the C Controller module.
CPU
Figure 13.3 Positions not allowed for C Controller module
(d) "CPU (Empty)" setting
An empty slot can be reserved for future addition of a CPU module.
Set the number of CPU modules, including the one on the empty slot, in "Number
of CPUs" on the <<Multiple CPU settings>> tab of the C Controller setting utility.
After that, set "CPU (Empty)" for the emplty slot type in on the <<I/O assignment
settings>> tab of the C Controller setting utility.
1) When adding the Motion CPU in the future.
Set slot 0 as "CPU (Empty)."
0 1 2 Slot number
Figure 13.4 "CPU (Empty)" setting for addition of Motion CPU
0 1 2 Slot number
CPU 0
13.1 Mounting Position of CPU Module
1 2 Slot number
Added Motion CPU
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