Siemens SINUMERIK 802D sl, Руководство по эксплуатации функций, Страница: 277 / 462

Punching and Nibbling (N4)
15.3 Activation and deactivation
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
277
MD26006 NIBBLE_PUNCH_INMASK[0]
= 1 First interface input bit
→ Bit 1 SPIF1
MD26006 NIBBLE_PUNCH_INMASK[1]
= 2 Second interface input bit
→ Bit 2 SPIF2
Automatically activated pre-initiation time
Dead times due to the reaction time of the punching unit can be minimized if the stroke can
be initiated before the interpolation window of the axes is reached. The reference time for
this is the interpolation end. The stroke is automatically initiated with
G603
and delayed by the
set value in relation to the time that the end of interpolation is reached.
The delay time for stroke initiation can be adjusted in machine data:
MD26018 NIBBLE_PRE_START_TIME
Example:
With an IPO cycle of 9 ms, a stroke shall be released two cycles after reaching the
interpolation end:
⇒ MD26018 NIBBLE_PRE_START_TIME = 0.018 [s]
A pre-initiation time can also be programmed in setting data:
SD42402 NIBPUNCH_PRE_START_TIME
This setting takes effective only if MD26018 = 0 has been set.
Monitoring of the input signal
If the "stroke active" signal is fluctuating between strokes due to plunger overshoots, for
example, the message "undefined punching signal" can be also be output when interpolation
is stopped.
The message output is dependent on the setting in machine data:
MD26020 NIBBLE_SIGNAL_CHECK
MD26020 = 0 No alarm
MD26020 = 1 Alarm
Minimum period between two strokes
A minimum time interval between two consecutive strokes can be programmed in setting
data:
SD42404 MINTIME_BETWEEN_STROKES
Example:
There must be a minimum delay of at least 1.3 seconds between two stroke initiations
irrespective of physical distance:
⇒ SD42404 MINTIME_BETWEEN_STROKES = 1.3 [s]