S

Operator - Force a Boolean output to TRUE.

Inputs

SET : BOOL Condition

Outputs

Q   : BOOL Output to be forced

Truth table

SET Q prev Q

0

0

0

0

1

1

1

0

1

1

1

1

Remarks

S and R operators are available as standard instructions in the ILClosed"Instruction list" This is a low-level language and resembles assembly language. In FFLD languages they are represented by (S) and (R) coils In FBDClosed"Function block diagram" A function block diagram describes a function between input variables and output variables. A function is described as a set of elementary blocks language, you can use (S) and (R) coils, but you must prefer RS and SR function blocks. Set and reset operations are not available in STClosed"Structured text" A high-level language that is block structured and syntactically resembles Pascal language.

ST Language

Not available.

FBD Language

Not available. Use RS or SR function blocks.

FFLD Language

(* use of "S" coil *)
S

IL Language:

Op1: FFLD  SET
     S   Q    (* Q is forced to TRUE if SET is TRUE *)
              (* Q is unchanged if SET is FALSE *)

See also

R   RS   SR