CMP

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 Function Block - Comparison with detailed outputs for integer inputs.

Inputs

Input

Data Type

Range

Unit

Default

Description

IN1

DINT

 

 

 

First value.

IN2

DINT

 

 

 

Second value.

Outputs

Output

Data Type

Range

Unit

Description

EQ

BOOL

 

 

TRUE if IN1 = IN2.

GT

BOOL

 

 

TRUE if IN1 > IN2.

LT

BOOL

 

 

TRUE if IN1 < IN2.

Remarks

None

FBD Language Example

FFLD Language Example

  • The rung input (EN) validates the operation.
    • The rung output is the result of LT (lower than) comparison).
    • The comparison is executed only if EN is TRUE.

IL Language Example

(* MyCmp is declared as an instance of CMP function block *)
Op1: CAL MyCmp (IN1, IN2)
     LD  MyCmp.LT
     ST  bLT
     LD  MyCmp.EQ
     ST  bEQ
     LD  MyCmp.GT
     ST  bGT

ST Language Example

(* MyCmp is declared as an instance of CMP function block. *)
MyCMP (IN1, IN2);
bLT := MyCmp.LT;
bEQ := MyCmp.EQ;
bGT := MyCmp.GT;

See Also