RS

The RS function block is bistable and RESET is dominant.

Q1 = RS (SET, RESET1)

I.e.: Q1 = NOT RESET1 AND (Q1 OR SET)

Inputs

VAR_INPUT
    SET    : BOOL; 
    RESET1 : BOOL;
END_VAR

Name	Type	Description
SET	BOOL	Set input - Q1 is set to TRUE on a rising edge.
RESET1	BOOL	Reset input (dominant) - Q1 is set to FALSE on rising edge

VAR_OUTPUT
    Q1 : BOOL; 
END_VAR

Name	Type	Description
Q1	BOOL	Output

Internal implementation of the function block:

Q1: = NOT RESET1 AND (Q1 OR SET);

Development environment	Target platform	PLC library to include
TwinCAT v3.0.0	PC or CX (x86)	Tc2_Standard