Lenze DDS v2.3 Manual do Utilizador descarregar pdf (Página 281)

100

101

Drive PLC Developer Studio

IEC 61131-3 Operators

12-11

l DDS EN 2.3

12.5.2 LT

Less than

A Boolean operator with the result TRUE if the first operand is less than the second operand.

Examples

IL ST FBD

LD 20

LT 30

ST Var1 (* Var1 = TRUE *)

Var1 := 20 < 30;

12.5.3 LE

Less than or equal to

A Boolean operator with the result TRUE if the first operand is less than or equal to the second

operand.

Examples

IL ST FBD

LD 20

LE 30

ST Var1 (* Var1 = TRUE *)

Var1 := 20 <= 30;

12.5.4 GE

Greater than or equal to

A Boolean operator with the result TRUE if the first operand is greater than or equal to the second

operand.

Examples

IL ST FBD

LD 60

GE 40

ST Var1 (* Var1 = TRUE *)

Var1 := 60 >= 40;

12.5.5 EQ

Equal to

A Boolean operator with the result TRUE if the operands are equal to each other.

Examples

IL ST FBD

LD 40

EQ 40

ST Var1 (* Var1 = TRUE *)

Var1 := 40 = 40;

12.5.6 NE

Not equal to

A Boolean operator with the result TRUE if the operands are not equal to each other.

Examples

IL ST FBD

LD 40

NE 40

ST Var1 (* Var1 = FALSE *)

Var1 := 40 <> 40;

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