Mitsubishi Electric MELSEC Q Series User Manual page 51

(b) Outline of system configuration
*1: Shows when the CPU module 3 is the PC CPU module.
If the CPU module 3 is the C Controller module, a module can be mounted on the slot 2.
2 - 3
Main base unit.........32-point modules are mounted on each slot.
Q38B (8 slots occupied)
CPU 0 1
Q series power
supply module
CPU module 2
CPU module 1
Extension base unit .........32-point modules are mounted on each slot.
Q65B (5 slots occupied)
8 9 10 11
Q55B (5 slots occupied)
2nd
extension
13 14 15 16 17
Q65B (5 slots occupied)
18 19 20 21
Q65B (5 slots occupied)
23 24 25 26
Figure 2.2 System configuration example for using Basic model QCPU
2 3 4 5 6 7
...... Slot number
...... I/O number
Empty space of 16 points
CPU module 3 1
*
1st
extension
12
3rd
extension
22
4th
extension
27
Error in mounting