Siemens SINUMERIK 840D sl Function Manual page 513

Program code
N200 IPTRUNLOCK()
N220 R1=R1+1
N230 G4 F1
...
Boundary conditions
● IPTRLOCK acts within a program (*.MPF, *.SPF) at the most up to the end of the program
(M30, M17, RET). IPTRUNLOCK implicitly becomes active at the end of the program.
● Multiple programming of IPTRLOCK within a program does not have a cumulative effect.
With the first programming of IPTRUNLOCK within the program or when the end of the
program is reached, all previous IPTRLOCK calls are terminated.
● If there is a subprogram call within a locked area, "Continue machining at the contour" is
also locked for this and all following subprogram levels. The lock also cannot be cancelled
within the called subprogram through explicit programming of IPTRUNLOCK.
Example: Nesting of locked program sections in two program levels
With the activation of the "Continue machining at the contour" lock in PROG_1, "Continue
machining at the contour" is also locked for PROG_2 and all following program levels.
Program code
PROC PROG_1
...
N010 IPTRLOCK()
N020 R1=R1+1
N030 G4 F1
...
N040 PROG_2
...
N050 IPTRUNLOCK()
N060 R2=R2+2
N070 G4 F1
...
Program code
PROC PROG_2
N210 IPTRLOCK()
...
N250 IPTRUNLOCK()
...
N280 RET
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
K1: Mode group, channel, program operation, reset response
Comment
; Locked area: End
; Release block
Comment
; Program 1
; Hold block
; Locked area: Start
; Locked area
; Locked area: End
; Release block
Comment
; Program 2
; Ineffective due to program 1
; Ineffective due to program 1
; Ineffective due to program 1
9.8 Block search Type 5 (SERUPRO)
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