Lenze DDS v2.3 - Manual (Page 281)

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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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