Diagnostic Functions; Error Log - Omron CS1G/H-CPUxx-EV1 Programming Manual

Diagnostic Functions

6-7 Diagnostic Functions
6-7-1

Error Log

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This section provides a brief overview of the following diagnostic and debug-
ging functions.
• Error Log
• Output OFF Function
• Failure Alarm Functions (FAL(006) and FALS(007))
• Failure Point Detection (FPD(269)) Function
Each time that an error occurs in a CS/CJ-series PLC, the CPU Unit stores
error information in the Error Log Area. The error information includes the
error code (stored in A400), error contents, and time that the error occurred.
Up to 20 records can be stored in the Error Log.
In addition to system-generated errors, the PLC records user-defined
FAL(006) and FALS(007) errors, making it easier to track the operating status
of the system.
Refer to the section on troubleshooting in the CS/CJ Series Operation Manual
for details.
Note A user-defined error is generated when FAL(006) or FALS(007) is executed in
the program. The execution 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.
Section 6-7