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 IL language. In LD languages they are represented by (S) and (R) coils In FBD language, you can use (S) and (R) coils, but you should prefer RS and SR function blocks. Set and reset operations are not available in ST language.

ST Language

Not available.

FBD Language

Not available. Use RS or SR function blocks.

LD Language

(* use of "S" coil *)
S.GIF (1114 octets)

IL Language:

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

See also

R   RS   SR