Kuhnke Electronics Instruction Manual

=> - STOP: The program is stopped
Error Handling
- RESET: all outputs and non-RETAIN variables
are reset
- All LEDs extinguish
Corrective action
� Preliminary user program action to protect the
buffered operands:
Running the user program should be suspended until
the cause is at its second stage or until a practically
feasible time has elapsed.
Error IRQ module, example:
VAR
Wait: TP; (*max. LOW time*)
LOW_ongoing: BOOL; (*max. LOW time exceeded*)
ON: BOOL;
Active:
END_VAR
BOOL;
PROGRAM low voltage
On:=TRUE;
WHILE On OR Active = TRUE DO
Wait (IN:=On, PT:=T#1000ms, Q=>Active, ET=> );
On := FALSE;
END_WHILE
IF SYSTEMINFO.Error.1 =TRUE THEN
LOW_ongoing :=TRUE;
ELSE
LOW_ongoing :=FALSE;
END_IF
183