Siemens sinumerik 840d Programming Manual page 333
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08.97
9
9.7 Repositioning on contour, REPOSA, REPOSL, REPOSQ, REPOSH
840D
840D
NCU 571
NCU 572
NCU 573
Function
If you interrupt the program run and retract the
tool during the machining operation because, for
example, the tool has broken or you wish to
check a measurement, you can reposition at any
selected point on the contour under control by the
program.
The REPOS command acts in the same way as a
subprogram return jump (e.g. via M17). Blocks
programmed after the command in the interrupt
routine are not executed.
For information about interrupting program runs, see
also Section "Interrupt routine" in Programming Guide
"Advanced".
Sequence
Defining repositioning point
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:
• RMI, interruption point
RMB, block start point or last end point
• RME, block end point
RMI DISPR=...<F 6 or RME DISPR=... allows you
to select a repositioning point which sits 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 or 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 RMI) or the block end point (with RME).
SW 5.2 and higher:
The sign before DISPR is evaluated.
In the case of a plus sign, the behavior is as
previously.
Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
FM-NC
810D
840Di
Path Traversing Behavior
REPOS
Y
Block end point
Interruption point
RME
RMI
RMB
9
Block start
point
X
9-333
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