Documentation

SR FlipFlop (IEC 61131)

Block name

SR

ST call

PROGRAM SR_DEMO
VAR
BOOL1,BOOL2,BOOL3: BOOL;
FB:SR;
END_VAR
FB(R:=BOOL2,S1:=BOOL3,Q1=>BOOL1);
END_PROGRAM

Description

The circuit acts as a classical RS flip-flop circuit. If both inputs are true the output is true.

Inputs

Input Type Description Default value
S1 ANY_BOOL Set False
R ANY_BOOL Reset False

Outputs

Output Type Description
Q1 BOOL Output of the RS circuit

Application example