R

Operator - Force a Boolean output to FALSE.

Inputs

Input

Data Type

Range

Unit

Default

Description

RESET

BOOL

 

 

 

Condition.

Outputs

Output

Data Type

Range

Unit

Description

Q

BOOL

 

 

Output to be forced.

Remarks

None

Truth Table

RESET

Q (prev)

Q

0

0

0

0

1

1

1

0

0

1

1

0

FBD Language Example

  • In the FBD Language, RS and SR function blocks are preferred.
    • Use RS or SR function blocks.
    • (S) and (R) coils can be used.

FFLD Language Example

  • In the FFLD Language, they are represented by (S) and (R) coils.

Example: Use of R coil:

IL Language Example

  • In the IL Language, S and R operators are available as standard instructions.
Op1: FFLD  RESET
     R   Q    (* Q is forced to FALSE if RESET is TRUE *)
              (* Q is unchanged if RESET is FALSE *)

ST Language Example

Not available.

See Also