1972
34 BISTABLE FUNCTION BLOCKS
34.1 Bistable Function Block (Set-Dominant)
34 BISTABLE FUNCTION BLOCKS
34.1 Bistable Function Block (Set-Dominant)
SR(_E)
These function blocks discriminate between two input values, and output 1 (TRUE) or 0 (FALSE).
■Description, type, data type
Ladder, FBD/LD Structured text
[Without EN/ENO] [With EN/ENO] [Without EN/ENO]
Instance name(S1:=s1,R:=s2,Q1:=d);
[With EN/ENO]
Instance name(EN:=en,ENO:=eno,S1:=s1,R:=s2,Q1:=d);
Argument Description Type Data type
EN Execution condition (TRUE: Executed, FALSE: Not executed) Input variable BOOL
s1 (S1) Set command Input variable BOOL
s2 (R) Reset command Input variable BOOL
ENO Output status (TRUE: Normal, FALSE: Abnormal or operation stop) Output variable BOOL
d (Q1) Output Output variable BOOL
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)
EN ENO
ds1
s2