Name: Omron CJ2 CPU UNIT SOFTWARE
Brand: Omron
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8 I/O Allocations and Unit Settings

8-18

CJ2 CPU Unit Software User’s Manual

z Detailed Information on I/O Table Creation Errors

The contents of A261 (I/O Table Creation Error Details) provides information on the Unit causing the

error whenever one occurs when creating the I/O tables from the CX-Programmer. This information

will make it easier to find the Unit causing the problem with troubleshooting I/O tables.

After setting I/O tables, check for any duplications in word allocations if Units are to be changed. It is

conceivable, however, that duplications in word allocations could occur after the I/O tables have been

registered, e.g., as the result of replacing a 1-word Unit with a 2-word Unit. In this case, the extra word

needed by the new Unit would still also be allocated to the next Unit.

When the PLC is turned ON after Units have been changed, the CPU Unit checks the registered I/O

tables against the actual Units connected in the PLC. If there are any duplications, an error will occur

and it will be no longer possible to edit the I/O tables. If this happens, it will be necessary to edit the I/O

tables and transfer them again.

When I/O tables are edited, the CX-Programmer checks for any duplication in first word settings and

setting range errors to help eliminate problems.

Name

Address

Contents

Word Bit

Detailed

Informa-

tion on I/O

Table Cre-

ation

Errors

CPU Bus Unit Setup Area

Initialization Error Flag

A261 00 ON: Error in CPU Bus Unit Setup