Omron FQM1-MMP21, FQM1-CM001, FQM1-MMA21 5-8Diagnostic Functions, Section, Auxiliary Area Flags

Diagnostic Functions Section 5-8

in the PLC properties and Window/PLC Memory Backup Status must be selected from the View Menu. For normal transfer operations (PLC/Transfer), the backup status will be displayed in the transfer window after the transfer status for the program and other data. Never turn OFF the FQM1 power dur- ing these backup operations. The flash memory will be corrupted if the power is turned OFF.

Auxiliary Area Flags

Name	Address	Meaning
Flash Memory Error	A403.10	Turns ON when the flash memory is cor-
Flag		rupted.

5-8 Diagnostic Functions

This section provides a brief overview of the following diagnostic and debug- ging functions.

•Error Log

•Failure Alarm Functions (FAL(006) and FALS(007))

5-8-1 Error Log

Each time that an error occurs, the Module stores error information in the Error Log Area. The error information includes the error code (stored in A400) and error contents. Up to 20 records can be stored in the Error Log.

In addition to system-generated errors, the Module records user-defined FAL(006) and FALS(007) errors, making it easier to track the operating status of the system.

Refer to SECTION 9 Error Processing for details.

Note A user-defined error is generated when FAL(006) or FALS(007) is executed in the program. The input conditions of these instructions constitute the user- defined error conditions. FAL(006) generates a non-fatal error and FALS(007) generates a fatal error that stops program execution.

When more than 20 errors occur, the oldest error data (in A100 to A104) is deleted, the remaining 19 records are shifted down by one record, and the newest record is stored in A195 to A199.

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