Siemens SINUMERIK 840D sl Function Manual page 720

N4: Punching and nibbling - only 840D sl
10.2 Stroke control
The following diagram shows the various criteria that can be applied to stroke initiation.
Figure 10-2 Signal chart: Criteria for stroke initiation
The time interval between t
setting of output A
dead times.
The diagram above shows the default setting with which the output is set when the "Exact
stop fine window" is reached (G601; default setting of G group 12). The punch initiation times
t'' and t'
1
Programming
G603
G602
G601
720
and t
1
. This cannot be altered, but can be utilized as a lead time for minimizing
0
are programmed by means of G602 and G603 (see table below).
1
Activation
Stop interpolation
Reach the coarse in-
position window
Reach the fine in-
position window
is determined by the reaction of the punching unit to
2
Description
The interpolation reaches the block end. In this case,
the axes continue to move until the overtravel has
been traversed, i.e. the signal is output at an
appreciable interval before the axes have reached
zero speed (see t"
The signal is output once the axes have reached the
coarse in-position window. If this criterion is selected
for stroke initiation output, then the instant of stroke
initiation can be varied through the size of interpolation
window (see t'
1
In this case, it can always be ensured that the machine
will have reached a standstill at the instant of punching
provided that the axis data are set appropriately.
However, this variant also results in a maximum dead
time (see t ).
1
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
).
1
).
Extended Functions