Allocating I/O Functions; Specifying The Functions To Use; Selecting Functions In The Plc Setup - Omron SYSMAC CJ Series User Manual

2 I/O Application Procedures and Function Allocations
2-2

Allocating I/O Functions

2-2-1

Specifying the Functions to Use

Each of the Pulse I/O Module inputs and outputs are used for one of the I/O functions.
Some I/O terminals may support more than one function. However, only one function can be
assigned to each terminal. Specify the input functions in the PLC Setup from the CX-Programmer,
and specify the output functions in PLC Setup and programming instructions.
Multiple terminals are sometimes used in combination depending on the function, so some functions
cannot be combined. Allocate functions to be used to terminals in the CX-Programmer's PLC Setup.
The CX-Programmer automatically displays the combination of terminals that can be selected so
that there is no need to be concerned about allocating more than one function to the same terminal.
To see which functions can be allocated to which I/O terminals, refer to 2-2-3 Allocating Functions to
Input Terminals and 2-2-4 Allocating Functions to Output Terminals.
2-2-2

Selecting Functions in the PLC Setup

• Inputs can be selected on the I/O Module Tab Page.
Click the Set Button in the Interrupt Inputs and Quick-response Inputs Area to display a dialog box to
allocate functions to interrupt inputs and quick-response inputs.
The order of preference for allocating functions to inputs is as follows:
Origin Search > High-speed Counter (Phase Z/Reset) > Normal Inputs, Interrupt Inputs, and Quick-
response Inputs
2-4 CJ2M CPU Unit Pulse I/O Module User's Manual