Lenze DDS v2.3 - Manual (Page 282)

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IEC 61131-3 Operators
12-12
l
DDS EN 2.3
12.6 Addressing operators
12.6.1 ADR
Addressing function
ADR returns the data memory address of its argument in a DWORD. The determined address can be
assigned to a pointer within the project.
Examples
IL
ST FBD
LD var1
ADR
ST
pt
12.6.2 Contents operator
A pointer is de-referenced by means of the contents operator ^ behind the pointer identifier.
Examples
IL
Declaration
ST
Declaration FBD
pt:POINTER TO INT;
var:int1:INT;
vat_int2:INT
Implementation
LD
var_int1
ADR
ST
pt
LD pt^
ST var_int2
pt:POINTER TO INT;
var_int1:INT;
var_int2:INT;
Implementation
pt := ADR(var_int1);
var_int2:=pt^;
12.7 Call operator
12.7.1 CAL
Calling up a function block
CAL is used to call up the instance of a function block in IL.
The name of the instance of a function block is followed by the assignment of the input variables of
the function block in parentheses.
Example:
Calling up the instance Inst of a function block with the input variables
Par1
,
Par2
set to 0 or TRUE.
CAL INST(PAR1 := 0, PAR2 := TRUE)
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