Siemens SINUMERIK 840D sl Function Manual page 1259

FUNCTIONBLOCK FB 100
SLD 3;
LD [AR1,P#6.0];
T
CALL FB 101, DB 100
(ANYPAR := #Temp_addr);
2.14.3.2 General
General
The following programming examples illustrate different programming mechanisms. They
demonstrate how input/output and transit variables (VAR_INPUT, VAR_OUTPUT,
VAR_IN_OUT) are accessed by data types "POINTER" or "ANY" within an FC or FB. The
access operations are described in such a way that a part symbolic method of programming
can be used.
2.14.3.3 Use of POINTER and ANY in FC if POINTER or ANY is available as parameter
Description of Functions
FC 99 has inputs parameters that are defined as POINTER or ANY.
The example shows a body program via which the subcomponents of the POINTER or ANY
can be accessed. In this case, the DB parameterized with POINTER or ANY is opened and
the address offset stored as a crossarea pointer in address register AR1, thus allowing
access to data elements of variables (generally structures and arrays) that are addressed via
the POINTER, ANY.
This access operation is described at the end of the relevant program sequence in the
example. With data type ANY, it is also possible to execute a check or branch when the
variable is accessed based on the data type and the number of elements involved.
Basic logic functions: PLC Basic program powerline (P3 pl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
2.14 Programming tips with STEP 7
Comment
//Offset is a bit offset
//ANYPAR is data type ANY
Detailed description
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