Siemens SINUMERIK 840D sl Programming Manual page 480

Path traversing behavior
10.9 Repositioning to the contour (REPOSA, REPOSL, REPOSQ, REPOSQA, REPOSH, REPOSHA, DISR,
DISPR, RMIBL, RMBBL, RMEBL, RMNBL)
Specifying the repositioning point (not for SERUPRO approaching with RMNBL)
With reference to the NC block in which the program run has been interrupted, it is possible
to select one of three different repositioning points:
● RMIBL, interruption point
● RMBBL, block start point or last end point
● RMEBL, block end point
RMIBL DISPR=... or RME DISPR=... allows you to select a repositioning point which lies
before the interruption point or the block end point.
DISPR=... allows you to describe the contour distance in mm/inch between the repositioning
point and the interruption before the end point. Even for high values, this point cannot be
further away than the block start point.
If no DISPR=... command is programmed, then DISPR=0 applies and with it the interruption
point (with RMIBL) or the block end point (with RMEBL).
DISPR sign
The sign of DISPR is evaluated. In the case of a plus sign, the behavior is as previously.
In the case of a minus sign, approach is behind the interruption point or, with RMBBL, behind
the block start point.
The distance between interruption point and approach point depends on the value of DISPR.
Even for higher values, this point can lie in the block end point at the maximum.
Application example:
A sensor will recognize the approach to a clamp. An ASUB is initiated to bypass the clamp.
Afterwards, a negative DISPR is repositioned on one point behind the clamp and the
program is continued.
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Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
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