Siemens SIMATIC S5 Manual page 115

Executing Machining Programs
Situation 1
If the machining program is interrupted while the axis is accelerating or traveling at a constant
speed, the axis is braked. Since the target of the job is not reached, the following occurs:
"Position reached" is not set.
The axis status changes to "finished".
The error message "machining program waiting to continue" is output.
The distance to go is displayed. This interrupted job can be continued.
If the machining program is interrupted by a stop command or an operator error during the
deceleration phase of a traversing movement, the target of the job is reached. There is no dis-
tance to go. The following then occurs:
"Position reached" is set.
The axis status changes from "running" to "finished".
The error message "machining program waiting to continue" is output.
In this case, offsets and switchovers are handled in the same way as described for dwell times.
If the program is interrupted by a stop command or by an operator error during the deceleration
phase, the break point is always directly before the dwell time or before the next traversing job.
N10Xl00F1000 Ml O = machining program interrupted during the deceleration phase
N20 G57 ! X200 F500 M20 (! = break point in program)
Interruption of a machining program during traversing jobs linked by "flying changes"
If a machining program is interrupted during a traversing job which is followed by a further tra-
versing job with a flying change (Gl O), the axis is braked.
"Position reached" is not set, even if the "intermediate target" has been reached exactly.
The axis status changes from "running" to "finished",
The error message "machining program waiting to continue" is output.
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