Siemens SINUMERIK 840D sl Function Manual page 467

Example of conditional wait in continuous-path mode
Conditional wait involving three channels (schematic)
The example is schematic and shows only those commands that are relevant to the
synchronization process.
Channel 1:
%100
N10 INIT(2, "_N_200_MPF","n")
N11 INIT(3, "_N_300_MPF","n")
N15 START(2, 3)
...
N20 WAITMC(7, 2, 3)
...
N40 WAITMC(8, 2)
...
N70 M30
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
K5: Mode groups, channels, axis interchange
6.3 Channels - only 840D sl
; select partner program Channel 2
; select partner program Channel 3
; start programs in Channel 2, 3
; Processing in Channel 1:
; wait conditionally for marker 7 from
Channels 2 and 3
; Additional processing in Channel 1:
; wait conditionally for marker 8 from
Channel 2
; Additional processing in Channel 1:
; End Channel 1
467