Mitsubishi Q00JCPU User Manual page 163

4
I/O NUMBER ASSIGNMENT
POINT
CPU
2) When the preset number of slots is less than the number of actually
used slots
The slots other than those designated are disabled.
For example, when 8 slots are designated for a 12-slot base unit, the 4 slots
on the right of the base unit are disabled.
(If a module is mounted to the prohibited slot, an error [SP. UNIT LAY ERR.]
occurs.)
Main base unit
Q312B
CPU 0
Power supply
CPU module
module
Diagram 4.14 When the preset number of slots is less than the number of actually used slots
One Redundant CPU occupies 2 slots.
Hence, the number of mountable modules is (the preset number of slots - 1).
For example, when a 5-slot main base unit is used, the number of mountable slots
is 4.
Slot number
0 1 2 3 4
Module mounting range
1 2 3 4 5 6 7
Module scan be Modules cannot be mounted.
mounted. (When (Mounting modules will result in error.)
eight slots are set)
Tracking cable
4.4 Base Unit Assignment (Base Mode)
8 9 10 11
Slot number
CPU 0 1 2 3 4
Module mounting range
4
- 15
1
2
3
4
5
6
7
8