Siemens SINUMERIK 840D sl Function Manual page 741

(a) Axis motion of the machine as function v(t)
(b) "Stroke initiation" signal
(c) "Stroke active" signal
Figure 10-1 Signal chart
Note
The "Stroke active" signal is high-active for reasons relating to open-circuit monitoring.
The chronological sequence of events for punching and nibbling is controlled by the two
signals A
A
0
E
0
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
and E :
0 0
Set by the NCK and identical to stroke initiation.
Defines the status of the punching unit and identical to the "Stroke active" signal.
Punching and Nibbling (N4)
Stroke control
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