FP_INTERRUPT_ENABLE

Enable interrupt programs

This FP instruction enables the execution of all programs assigned to interrupt tasks.

Remarks

For periodic interrupts, the following applies: After you enable interrupt programs, the first execution of an interrupt program is possible after the time interval that has been defined for the interrupt program has elapsed.
When the PLC switches from PROG to RUN mode, interrupt programs are disabled. It is necessary to enable interrupt programs by executing FP_INTERRUPT_ACTIVATE.

Example

POU header

All input and output variables used for programming this function have been declared in the POU header. The same POU header is used for all programming languages.

	VAR
		bEnable_Interrupt: BOOL:=FALSE;
		bComparisonMatchMonitor: BOOL:=FALSE;
		bDisableHscUnit: BOOL:=FALSE;
		bDisable_Interrupt: BOOL:=FALSE;
	END_VAR

LD body

BODY
    WORKSPACE
        NETWORK_LIST_TYPE := NWTYPELD ;
        ACTIVE_NETWORK := 0 ;
    END_WORKSPACE
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 12 ;
        NETWORK_BODY
B(B_COMMENT,,Program behavior:ø^- with first scan all interrupts are disabled (or via "bDisable_interrupt" by hand)ø^ø^- g_Count_up ONCE a second --> if EQ 10 the interrupts will be enabled ø^ø^- the interrupt program is activated in  Interrupt 10 (Slot 1 Channel 0)ø^ø^- if g_bCount_interrupt = 20 --> g_bCount_interrupt and g_bCount_up are set to ZEROø^,4,1,41,10,);
L(1,0,1,12);
        END_NETWORK_BODY
    END_NET_WORK
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 6 ;
        NETWORK_BODY
B(B_CONTACT,,sys_bIsFirstScan,6,1,8,3,F);
B(B_COIL,,g_bHscUnitEnable,29,1,31,3,);
B(B_CONTACT,,g_bHscUnitEnable,6,4,8,6,);
B(B_CONTACT,,bDisableHscUnit,16,1,18,3,N);
L(18,2,29,2);
L(8,2,16,2);
L(1,2,6,2);
L(1,5,6,5);
L(8,5,11,5);
L(11,2,11,5);
L(1,0,1,6);
        END_NETWORK_BODY
    END_NET_WORK
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 6 ;
        NETWORK_BODY
B(B_CONTACT,,g_bHscUnitEnable,6,1,8,3,R);
B(B_COIL,,g_bHscUnitEnableCounting,29,1,31,3,);
B(B_CONTACT,,g_bHscUnitEnableCounting,6,4,8,6,);
B(B_CONTACT,,bDisableHscUnit,16,1,18,3,N);
L(18,2,29,2);
L(1,5,6,5);
L(13,2,13,5);
L(8,5,13,5);
L(13,2,16,2);
L(8,2,13,2);
L(1,2,6,2);
L(1,0,1,6);
        END_NETWORK_BODY
    END_NET_WORK
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 3 ;
        NETWORK_BODY
B(B_CONTACT,,g_bHscUnitComparisonMatchFlag,7,1,9,3,);
B(B_COIL,,bComparisonMatchMonitor,29,1,31,3,);
B(B_COMMENT,,For Monitoring if ComparisionMatchFlag is TRUE,45,0,69,2,);
L(9,2,29,2);
L(1,2,7,2);
L(1,0,1,3);
        END_NETWORK_BODY
    END_NET_WORK
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 5 ;
        NETWORK_BODY
B(B_F,FP_INTERRUPT_DISABLE!,,12,0,24,3,,?DEN?AENO);
B(B_CONTACT,,sys_bIsFirstScan,4,1,6,3,);
B(B_COIL,,bEnable_Interrupt,29,1,31,3,E);
B(B_CONTACT,,bDisable_Interrupt,4,3,6,5,);
B(B_COMMENT,,Disable all Interrupts hard: no activation with the FB- FP_INTERRUPT_ACTIVATE possible,43,0,67,2,);
L(1,2,4,2);
L(6,2,12,2);
L(1,4,4,4);
L(6,4,11,4);
L(11,2,11,4);
L(24,2,29,2);
L(1,0,1,5);
        END_NETWORK_BODY
    END_NET_WORK
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 2 ;
        NETWORK_BODY
B(B_VAROUT,,g_iCount_interrupt,16,0,18,2,);
B(B_VARIN,,g_iCount_interrupt,14,0,16,2,);
B(B_COMMENT,,For monitoring the counter variable in the interrupt 10,45,0,69,2,);
L(1,0,1,2);
        END_NETWORK_BODY
    END_NET_WORK
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 4 ;
        NETWORK_BODY
B(B_F,@EQ-2!,,9,1,14,4,,?D?D?C);
B(B_VARIN,,g_iCount_up,7,1,9,3,);
B(B_VARIN,,10,7,2,9,4,);
B(B_COIL,,bEnable_Interrupt,19,1,21,3,S);
L(14,2,19,2);
L(1,0,1,4);
        END_NETWORK_BODY
    END_NET_WORK
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 3 ;
        NETWORK_BODY
B(B_F,FP_INTERRUPT_ENABLE!,,19,0,31,3,,?DEN?AENO);
B(B_CONTACT,,bEnable_Interrupt,5,1,7,3,R);
L(1,2,5,2);
L(7,2,19,2);
L(1,0,1,3);
        END_NETWORK_BODY
    END_NET_WORK
    NET_WORK
        NETWORK_TYPE := NWTYPELD ;
        NETWORK_LABEL :=  ;
        NETWORK_TITLE :=  ;
        NETWORK_HEIGHT := 4 ;
        NETWORK_BODY
B(B_F,FP_INC!,,19,0,25,4,,?DEN?Dd?Ad?AENO);
B(B_VARIN,,g_iCount_up,17,2,19,4,);
B(B_CONTACT,,sys_bPulse1s,5,1,7,3,R);
L(1,2,5,2);
L(7,2,19,2);
L(1,0,1,4);
        END_NETWORK_BODY
    END_NET_WORK
END_BODY

ST body

(* Initiation *)
g_bHscUnitEnable := (DFN (sys_bIsFirstScan) OR g_bHscUnitEnable) AND  NOT bDisableHscUnit ;
g_bHscUnitEnableCounting := (DF(g_bHscUnitEnable) OR g_bHscUnitEnableCounting) AND NOT bDisableHscUnit ;
(* Monitoring *)
bComparisonMatchMonitor := g_bHscUnitComparisonMatchFlag ;  
g_iCount_up := g_iCount_up;                    (* is counted in the main project *)
g_iCount_interrupt := g_iCount_interrupt;            (* is counted in the interrupt program 1_0*)
(* Interrupt expressions *)
if (sys_bIsFirstScan OR bDisable_Interrupt) then
    FP_INTERRUPT_DISABLE();
    bEnable_Interrupt := FALSE;
end_if;
if (g_iCount_up = 10 ) then
    FP_INTERRUPT_ENABLE();    (* Enabel all interrupts *)
end_if;
(* 1 second counting pulse *)
if (DF(sys_bPulse1s)) then
    FP_INC(d := g_iCount_up);
end_if;