Siemens SINUMERIK 840Di Function Manual page 598

Detailed Description
2.6 Block search Type 5 SERUPRO
2.6.5 Inhibit specific part of the program in the part program for SERUPRO
Programmed interrupt pointer
As a general rule, only the user of the machine knows the mechanical situation that is
currently being executed in the program. The user can use a "programmable interrupt
pointer" to suppress SERUPRO at a particular point in the program where complex
mechanical conditions prevail to enable user intervention.
Through suitable manipulation of the interrupt pointer, it is possible, with "search for interrupt
point", to resume processing to the search-suppressed location prior to the search-
suppressed location. Search-suppressed areas can also be defined in areas of the part
program in which the NCK is not allowed to resume processing.
The last block processed before the search-suppressed target area is used as a search
pointer.
Input program section
The IPTRLOCK and IPTRUNLOCK language commands mark search-suppressed sections
of the program. These language commands cannot be used in synchronized actions.
IPTRLOCK
IPTRUNLOCK
IPTRLOCK
Freezes the interrupt pointer at the next "machine function block". This block is referred to
below as the Hold block. If a program abort occurs after IPTRLOCK, the hold block is used
as a search pointer.
Machine function block
Is a single block (SBL1) that can be executed in the main run with a stop after each function
block.
IPTRUNLOCK
The interrupt pointer is repositioned at the current block at the time of the interrupt for the
subsequent program section.
Note
When a search target is found, the interrupt pointer is
set to the hold block. The block search can be repeated for a new search target with the
same hold block.
A search-suppressed area in the part program can be detected using the $P_IPRTLOCK
variable.
2-62
Start of search-suppressed program section
End of search-suppressed program section
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0