Siemens SINUMERIK 828D Function Manual page 545

Automatic interrupt pointer
In certain applications it can be useful to automatically define a prespecified type of coupling as a search-
suppressed area. The automatic interrupt pointer function is activated with machine data
MD 22680 $MC_AUTO_IPTR_LOCK.
• Bit 0 = 1: Electronic gearbox with EGON
• Bit 1 = 1: Axial leading value coupling with LEADON
This program section begins with the last executable block before the activation and ends with the deactivation.
The automatic interrupt pointer is not active for couplings that were activated or deactivated via synchronized
actions.
Example: To declare axial master value coupling as search-suppressed:
Table 9-4
N100 G0 X100
N200 EGON(Y, "NOC", X, 1,
1)
N300 LEADON(A, B, 1)
...
N400 EGOFS(Y)
...
N500 LEADOF(A, B)
N600 G0 X200
A program abort within search-suppressed program section (N200 - N500) always provides the interrupt pointer
with N100.
CAUTION
Using an overlap of the "programmable interrupt pointer" and
"automatic interrupt pointer" via machine data, the NC selects the largest possible search-
suppressed area.
A program may need a coupling for almost all of the runtime. In this case, the automatic
interrupt pointer would always point to the start of the program and the SERUPRO function
would in fact be useless.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
K1: Mode group, channel, program operation, reset response
;
; search-suppressed program section starts
;
;
;
;
; search-suppressed program section ends
;
9.8 Block search Type 5 SERUPRO
545