9DEDICATED INSTRUCTIONS

Error

MELSEC-Q

(1)In case of operation errors, the error flag (SM0) turns on and the error code is stored in SD0.

See one of the following manuals according to the error code, and check and correct the error.

<Error code>

4FFFH or less: QCPU(Q Mode) User's Manual

(Hardware Design, Maintenance and Inspection) 7000H or more: Section 10.2 of the User's Manual (Basic)

Program example

A program that reads the communication status of a target module.

When input/output signals of the Q series C24 are from X/Y00 to X/Y1F

The function reads the communication status of a target module and stores it in a device.

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