Numbers And Assignment In System; Module Input/Output Number; Module Number Of Extension Modules - Mitsubishi Electric MELSEC iQ-F Series User Manual

2.4

Numbers and Assignment in System

This section describes input/output numbers and module numbers.

Module input/output number

The input/output numbers are octal numbers. Input is assigned to "X" and output to "Y".
Input/output numbers are used for communications of ON/OFF data between I/O modules and the CPU module.
Octal for input/output numbers (X/Y)
Input/output numbers (X/Y) are automatically assigned as shown below.
X0 to X7, X10 to X17, X20 to X27, ..., X70 to X77, X100 to X107, ...
Y0 to Y7, Y10 to Y17, Y20 to Y27, ..., Y70 to Y77, Y100 to Y107, ...
However, X16, X17, and Y12 to Y17 of the FX5UJ-24M and X44 to X47 of the FX5UJ-60M are vacant numbers.
Numbers for added I/O module
To an added I/O module, input numbers and output numbers following the input numbers and output numbers given to the
preceding device are assigned. The last digit of the assigned numbers must begin with 0.

Module number of extension modules

The CPU module automatically assigns numbers (1 to 16) to intelligent function modules, safety main module or bus
conversion module as module numbers in order of distance from the CPU module.
• Intelligent function modules, safety main module or bus conversion module connected to the CPU module
Module numbers are assigned to intelligent function modules in order of distance from the CPU module: No.1, No.2, ...,
No.16.
• Products to which module numbers are not assigned
Module numbers are not assigned to the following extension devices.
Product
I/O module
Expansion board
Expansion adapter
Connector conversion module
Connector conversion adapter
Extension power supply module
Safety input expansion module
Ex.
When the FX5 safety extension modules are not connected
CPU module
Expansion
adapter
Expansion
FX5-232ADP
board
Ex.
When the FX5 safety extension modules are connected
CPU module
Expansion
adapter
Expansion
FX5-232ADP
board
Model
FX5-16EX/ES, FX5-16EYT/ES, and other applicable models
FX5-232-BD, FX5-485-BD, and other applicable models
FX5-232ADP, FX5-485ADP, and other applicable models
FX5-CNV-IF
FX5-CNV-BC
FX5-1PSU-5V, FX5-C1PS-5V, FX3U-1PSU-5V
FX5-SF-8DI4
Module number
Input module Output module
FX5-16EX/ES FX5-16EYT/ES
Module number
Input module Output module
FX5-16EX/ES FX5-16EYT/ES
No.1 No.2 No.3
FX5 intelligent FX3 intelligent
Bus
module module
conversion
FX5-40SSC-S module FX3U-1PG
No.1 No.2
FX5 intelligent Safety main
module module
FX5-40SSC-S FX5-SF-MU4T5
2.4 Numbers and Assignment in System
No.4
FX3 intelligent
module
FX3U-4AD
Safety input Safety input
expansion expansion
module module
FX5-SF-8DI4 FX5-SF-8DI4
2 SYSTEM CONFIGURATION
2
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