Siemens SINUMERIK Series Function Manual page 310

K5: Mode groups, channels, axis interchange
5.3 Channels - only 840D sl
Program code
...
N200 WAITE(2)
N201 M30
Channel 2: The INIT command (see N10 in _N_MPF100_MPF) selects the
_N_MPF200_MPF program for execution in channel 2.
Program code
;$PATH=/_N_MPF_DIR
...
N70 WAITM(1,1,2)
...
N270 WAITM(2,1,2)
...
N400 M30
310
Comment
; Additional machining in channel 1.
; Wait for the end of program of channel 2
; End of program of channel 1, total end.
Comment
; Machining in channel 2
; Wait until wait marker 1 is reached in channels 1 and 2.
; Additional machining in channel 2.
; Wait until wait marker 2 is reached in channels 1 and 2.
; Additional machining in channel 2.
; End of program in channel 2.
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Extended Functions