R

Operator - Force a Boolean output to FALSE.

Inputs

Input	Data Type	Range	Unit	Default	Description
RESET New start of the microprocessor.	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 Function block diagram - Describes a function between input variables and output variables. A function is described as a set of elementary blocks. Language, RS and SR function blocks A function block groups an algorithm and a set of private data. It has inputs and outputs. are preferred.
  • Use RS or SR function A function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. 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 Instruction list - This is a low-level language and resembles assembly. 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

• RS
• S
• SR