Failure Alarm Instructions - Omron CJ2 CPU UNIT SOFTWARE User Manual

10-7-8 Failure Alarm Instructions

The FAL(006) and FALS(007) instructions generate user-defined errors. FAL(006) generates a non-fatal
error and FALS(007) generates a fatal error that stops program execution.
When the user-defined error conditions (execution conditions for FAL(006) or FAL(007)) are met, the
Failure Alarm instruction will be executed and the following processing will be performed.
• The FAL Error Flag (A402.15) or FALS Error Flag (A401.06) is turned ON.
• The corresponding error code is written to A400 in the Auxiliary Area.
• The error code and time of occurrence are stored in the Error Log.
• The error indicator on the front of the CPU Unit will flash or light.
If FAL(006) has been executed, the CPU Unit will continue operating.
If FALS(007) has been executed, the CPU Unit will stop operating. (Program execution will stop.)
Operation of FAL(006)
When execution condition A goes ON, an error with FAL number 002 is generated, A402.15 (FAL Error
Flag) is turned ON, and A360.02 (FAL Number 002 Flag) is turned ON. Program execution continues.
Errors generated by FAL(006) can be cleared by executing FAL(006) with FAL number 00 or performing
the error read/clear operation from the CX-Programmer.
Operation of FALS(007)
When execution condition B goes ON, an error with FALS number 003 is generated, and A401.06
(FALS Error Flag) is turned ON. Program execution is stopped.
Errors generated by FAL(006) can be cleared by eliminating the cause of the error and performing the
error read/clear operation from the CX-Programmer.
CJ2 CPU Unit Software User's Manual
10 CPU Unit Functions
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