Chapter 4 Programming; I/O Signals With Cpu Module; I/O Signal List - Mitsubishi Electric MELSEC-Q Series User Manual

CHAPTER 4
This chapter describes programs of the master module.
When applying the program examples introduced in this chapter to the actual system, ensure the applicability and
confirm that it does not cause system control problems.
4.1

I/O Signals with CPU Module

The master module is an intelligent function module. Thirty-two input points and 32 output points are used for the data
communication with the CPU module.
System status information is stored in this area.
The "buffer memory area" is used to input/output the signal to/from the remote I/O module.
4.1.1

I/O signal list

The n in the table below is the start I/O number of the master module which is determined according to the installation
position and modules installed before the master module.
If the start I/O number of the master module is X/Y10
Ex.
Xn0 to X(n+1)F  X10 to X2F
Yn0 to Y(n+1)F  Y10 to Y2F
Input number
Xn0
Xn1
Xn2
Xn3
Xn4
Xn5 to Xn7
*1
Xn8 to XnB
XnC to XnF
X(n+1)0 to
X(n+1)3
*3
X(n+1)4
X(n+1)5 to
X(n+1)F
*1 Use prohibited for the LJ51AW12D2.
*2 When 8 is set for "Switch 1", the settings are as follows.
Xn8: OFF, Xn9: OFF, XnA: OFF, XnB: ON
*3 Use prohibited for the QJ51AW12D2.
*4 The QJ51AW12D2 with a serial number where the sixth digit is "6" or later can be used.
PROGRAMMING
Signal name
Module READY
Short between D and G terminals
Short between D and 24 V terminals
24 V not applied
D/G line disconnection
Use prohibited
"Switch Setting for I/O and Intelligent
Function Module"
*2
Switch 1 setting value
Use prohibited
Use prohibited
Automatic address detection flag
Use prohibited

CHAPTER 4 PROGRAMMING

Output
Signal name
number
Disconnection flag reset command
Yn0
output
Automatic address detection command
Yn1
output
Transmission waveform output
*4
Yn2
command
Yn3

Use prohibited
YnF
Y(n+1)0 to
Use prohibited
Y(n+1)F
4
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