Concept Of I/O Number Assignment - Mitsubishi Electric Q01UCPU User Manual

2.3.1

Concept of I/O number assignment

The CPU module assigns I/O numbers at power on or reset, according to the I/O assignment setting.
(1) I/O number assignment
The following figure shows an example of I/O number assignment to base units in the system where the CPU
module is mounted on the main base unit.
Q35B (5 slots occupied)
Assignment order
Number of slot points
Q65B (5 slots occupied)
Assignment
order
Number of slot points
Q68B (8 slots occupied)
Assignment order
Number of slot points
(a) Assignment order
For the main base unit, the I/O numbers are assigned to the modules from left to right in a
sequential order, starting from 0
For extension base units, the I/O numbers are continued from the last number of the I/O number of the main
base unit.
(b) I/O number of each slot
Each slot on the base unit occupies I/O numbers by the number of I/O points of the mounted modules.
54
CPU 0 1 2 3 4
16 16 32 16 64
points points points points points
5 6 7 8 9
32 32 32 16 16
points points points points points
10 11 12 13 14
16 16 32 32 32
points points points points points
X
Y
assigned to the module on the right of the CPU module.
H
Slot number
I/O number: Assign one number to each point.
I/O number assignment order
Number of I/O points
15 16 17
16 16 16
points points points
0 to F: Input module
0 to F: Output module
0 to F: Intelligent function module