Siemens SIMATIC S5 Manual page 118

Note
In situations 2 and 3, if the start-up distance is greater than the distance to go to
the next target, or if the distance to go is negative, jobs are combined until:
1. either the distance is sufficient to achieve the programmed speed
(see Fig. 4/1 6), or
2. the linking of the jobs is completed (see Fig. 4/17).
In both cases, when the program continues, the M-function of the last of the com-
bined statements is output, If this statement does not contain an M-function, the
last output M-function is valid.
Example: N1 G1O X130 F1OOO Ml O
N2G1OXl80F1000 M20
N3 G1 O X230 F1 000 M30
N4 G1 O X280 F1 000 M40
N5G1OX330F1000 M50
N6 . . . . . .
v '
M1O
stop
. ..........,,.,,,.,,,,,,,,,.,,,,,
. . . . . . . . . . . . . . . . . . . , , , , ,
Fig. 4/1 6 Linking jobs until the distance is sufficient to achieve the programmed speed
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Positive distance to go ((1) > (2))
Executing Machining Programs
t
4 - 2 5