Siemens SINUMERIK 840D sl Function Manual page 639

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:
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 logic functions: Mode group, channel, program operation, reset response (K1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
;
; search-suppressed program section starts
;
;
;
;
; search-suppressed program section ends
;
Detailed description
2.6 Block search Type 5 SERUPRO
81