What Is I/O Number - Mitsubishi MELSEC-Q Series User Manual

6
I/O NUMBER ASSIGNMENT

6.4 What is I/O Number?

I/O numbers indicate the addresses used in a user program to input or output ON/OFF
data between the C Controller module and other modules.
(1) Input and output of ON/OFF data
(2) I/O number expressions
6
- 13 6.4 What is I/O Number?
Input (X) is used to input ON/OFF data to the C Controller module, and output (Y) is
used to output ON/OFF data from the C Controller module.
I/O numbers are expressed as hexadecimal.
When using 16-point I/O modules, I/O numbers are consecutively assigned to each
slot having 16 points of
The module mounted in the base unit is assigned as follows:
• For the input module, "X" is prefixed to the I/O number.
• For the output module, "Y" is prefixed to the I/O number.
Power supply
module
0 to F as shown in Figure 6.13.
For the case of input
module
0 0 0 0 1 0
X X
to to
X 0 0 F X 0 1 F
16 input 16 input
points points
C Controller module
Figure 6.13 Input and output numbers
For the case of
output module
0 2 0 0 3 0 0 4 0
X Y Y
to to
to
X 0 2 F Y 0 3 F Y 0 4 F
16 input 16 output 16 output
points points points