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FUNCTION_BLOCK Manager VAR_INPUT MyPump: POINTER TO PumpControl; FStart:BOOL; FStop:BOOL; END_VAR VAR_OUTPUT Trip:BOOL; Available:BOOL; END_VAR prevPStart, prevPStop:BOOL; VAR END_VAR IF FStart AND NOT prevFStart AND NOT MyPump^.PFail THEN StartRequest(); END_IF IF FStop AND NOT prevFStop THEN StopRequest(); END_IF prevFStart:=ThisObj^.FStart; prevFstop:=ThisObj^.FStop; IF MyPump^.PFail THEN Trip := TRUE; END_IF IF NOT MyPump^.PRun AND NOT MyPump^.PFail THEN Available:=TRUE; END_IF IF Available AND Trip THEN Available:=FALSE; END_IF # StartRequest MyPump^.StartPump(); #StopRequest MyPump^.StopPump();
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