Expansions To Punching And Nibbling Functions - Siemens sinumerik 802d sl Operation And Programming Manual

8.12.1

Expansions to punching and nibbling functions

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 machine data: MD26018 NIBBLE_PRE_START_TIME
can be used to set an appropriate delay time in seconds for the stroke initiation.
Select a value of 0.018 s if e. g. a stroke is to be initiated aft an IPO cycle of 9 ms 2 cycles
after reaching the end of the interpolation.
In addition, the pre-initiation time can be set in the setting data:
SD42402 NIBPUNCH_PRE_START_TIME.
This setting is only active if the following machine data has been entered:
MD26018 NIBBLE_PRE_START_TIME = 0
Thus, the pre-initiation time set in MD26018 has higher priority.
Monitoring of the input signal
If the "Stroke active" signal is fluctuating between strokes due to plunger overshoots, for ex-
ample, the message "Illegal punching signal" is output, and the interpolation is stopped.
This message is generated independently of the machine data MD26020 NIBBLE_SI-
GNAL_CHECK:
MD26020 NIBBLE_SIGNAL_CHECK = 0
Minimum period between two strokes
The setting data SD42404 MINTIME_BETWEEN_STROKES can be used to set a minimum
time interval between two consecutive strokes.
If, for example , the interval between two stroke initiations is to be at least 1.3 seconds irre-
spective of the spatial distance, then set SD42404 MINTIME_BETWEEN_STROKES=1.3.
If a punching dwell time (PDELAYON) is also programmed, then the two times are applied
additively. If a pre-initiation time at G603 is programmed, it will be effective only if the end of
interpolation is reached before the time set in SD 42404:
The programmed time becomes operative immediately. Depending on the size of the block
buffer, strokes that have already been programmed can be executed with this minimum inter-
val. The following programming measures (example) can be taken to prevent this:
N..
N100 STOPRE
N110 $SC_MINTIME_BETWEEN_STOKES=1.3
The function is not active when SD42404 = 0.
SINUMERIK 802D sl Operation and Programming Nibbling (BP-N), 06/2006 Edition
6FC5 398-3CP10-0BA0
8.12 Language commands for nibbling and punching
³
No alarm
Programming
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