Lenze DDS v2.3 Manual do Utilizador descarregar pdf (Página 271)

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IEC 61131-3 Operators

12-1

l DDS EN 2.3

12 IEC 61131-3 operators

The DDS supports all IEC operators.

Contrary to standard functions, they are known implicitly throughout the entire project. Organization

unit implementations use operators like functions.

12.1 Arithmetic operators

Types:

The operands of the following arithmetic operators can be of type BYTE, WORD, DWORD, SINT, USINT,

INT, UINT, DINT, UDINT and REAL.

12.1.1 ADD

Addition

It is also possible to add two TIME variables, the sum being again a time

(e.g. t#45s + t#50s = t#1m35s).

Examples

IL ST FBD

LD 7

ADD 2,4,7

ST Var1

Var1 := 7+2+4+7;

12.1.2 MUL

Multiplication

Examples

IL ST FBD

LD 7

MUL 2,4,7

ST Var1

Var1 := 7*2*4*7;

12.1.3 SUB

Subtraction

A TIME variable can also be subtracted from another TIME variable, the result being again of type

TIME. Note that negative TIME values are not defined.

Examples

IL ST FBD

LD 7

SUB 2

ST Var1

Var1 := 7-2;

12.1.4 DIV

Division

Examples

IL ST FBD

LD 8

DIV 2

ST Var1

Var1 := 8/2;

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