Lenze PLC Designer PLC Designer (R2-x) Instrukcja Użytkownika Pobierz pdf (Strona 52)

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101

L-force | PLC Designer

What is What in PLC Designer

50 DMS 3.2 EN 02/2011 TD29 

Below you find a table of all operators in IL with their possible modifiers and the

relevant meaning:

Operator Modifiers Meaning

LD N Make current result equal to the operand

ST N Save current result at the position of the operand

S Then put the Boolean operand exactly at TRUE if the current result is TRUE

R Then put the Boolean operand exactly at FALSE if the current result is TRUE

AND N,( Bitwise AND

OR N,( Bitwise OR

XOR N,( Bitwise exclusive OR

ADD ( Addition

SUB ( Subtraction

MUL ( Multiplication

DIV ( Division

GT ( >

GE ( >=

EQ ( =

NE ( <>

LE ( <=

LT ( <

JMP CN Jump to the label

CAL CN Call programor function block or

RET CN Leave POU and return to caller.

) Evaluate deferred operation

Click here to get a listing of all IEC operators.

Example of an IL program while using some modifiers:

LD TRUE (*load TRUE in the accumulator*)

ANDN BOOL1 (*execute AND with the negated value of the BOOL1 variable*)

JMPC mark (*if the result was TRUE, then jump to the label "mark"*)

LDN BOOL2 (*save the negated value of *)

ST ERG (*BOOL2 in ERG*)

label:

LD BOOL2 (*save the value of *)

ST ERG *BOOL2 in ERG*)

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