56
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.
(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
H
assigned to the module on the right of the CPU module.
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.
Number of I/O points
Q35B (5 slots occupied)
Q65B (5 slots occupied)
Q68B (8 slots occupied)
CPU 0 1 2 3 4
56 78 9
10 11 12 13 14 15 16 17
Slot number
I/O number: Assign one number to each point.
Assignment order
Number of slot points
Assignment
order
Number of slot points
Assignment order
Number of slot points
I/O number assignment order
X 0 to F: Input module
Y 0 to F: Output module
X00 to 0F
X10 to 1F
X20 to 3F
X40 to 4F
X50 to 8F
90 to AF
B0 to CF
D0 to EF
YF0 to FF
X110 to 11F
X120 to 12F
130 to 14F
150 to 16F
170 to 18F
Y190 to 19F
Y1A0 to 1AF
Y1B0 to 1BF
Empty (100 to 10F)
16
points
16
points
32
points
16
points
64
points
32
points
32
points
32
points
16
points
16
points
16
points
16
points
32
points
32
points
32
points
16
points
16
points
16
points
0 to F: Intelligent function module
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