Siemens SINUMERIK 828D Programming Manual page 473

Example
Nesting of untraceable program sections in two program levels with implicit
Implicit
Program code
N10010 IPTRLOCK()
N10020 R1 = R1 + 1
N10030 G4 F1
...
N10040 subprogram2
...
N20010 IPTRLOCK ()
...
N20020 IPTRUNLOCK ()
N20030 RET
...
N10060 R2 = R2 + 2
N10070 RET
N100 G4 F2
The interruption pointer then produces an interruption at 100 again.
Acquiring and finding untraceable sections
Non-searchable program sections are identified with language commands
IPTRUNLOCK
Command
run (
after
Continuing from the current block
The interruption pointer is placed on the current block with
point for the following program section.
Once the search target is found a new search target can be repeated with the hold block.
An interrupt pointer edited by the user must be removed again via the HMI.
Job planning
Programming Manual, 07/2010, 6FC5398-2BP40-0BA0
8.5 Preventing program position for SERUPRO (IPTRLOCK, IPTRUNLOCK)
in subprogram 1 ends the untraceable section.
IPTRUNLOCK
.
freezes the interruption pointer at a single block executable in the main
IPTRLOCK
). This block will be referred to as the hold block below. If the program is aborted
SBL1
, this hold block can be searched for from the HMI user interface.
IPTRLOCK
Comment
; Hold block of the search-suppressed program
section starts.
; Interpretation of subprogram 2
; Ineffective, repeated start.
; Ineffective, end at another level.
; End of search-suppressed program section.
; Main program is continued.
Path traversing behavior
IPTRUNLOCK
IPTRLOCK
as the interruption
IPTRUNLOCK
.
and
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