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8-9

8 I/O Allocations and Unit Settings

CJ2 CPU Unit Software User’s Manual

8-1 I/O Allocations

8-1-3 Manual Allocation

Use manual allocation to allocate I/O based on user-created I/O tables. If I/O tables are created, the

connected Units will be verified against the I/O tables when the power supply is turned ON.

z Creating I/O Tables

Use one of the following methods to create the I/O tables.

Additional information

The PLC can be set to automatically transfer I/O tables saved in a Memory Card to the CPU Unit

when the power supply is turned ON.

z Unit Verification

If I/O tables are created, the registered I/O tables are compared with the actual I/O at startup. If they

do not match, A401.10 will turn ON to indicate an I/O setting error and operation will not be possible.

8-1-3 Manual Allocation

Manual Allocation

Creating I/O tables with Units connected Creating I/O tables with User-set Allocations

Create the I/O tables with the Units connected and the

CX-Programmer connected online.

Create the I/O tables as required using the CX-Pro-

grammer with the CX-Programmer offline, and transfer

them to the CPU Unit.

2. I/O tables will be created for the connected Units when the

I/O table creation operation is performed.

I/O tables

1. Perform the operation to

create the I/O tables.

CX-Programmer

2. Transfer the I/O tables.

Registered I/O tables

1. Create or edit the I/O tables.

CX-Programmer

File memory (e.g., Memory Card)

The I/O tables in a parameter file

(.STD) are written to the CPU Unit.

Omron CJ2 CPU UNIT SOFTWARE User Manual

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