A
Appendix 03.04
B Terms
Reference point
Point on the machine tool used to reference the measuring system of
the -> machine axes.
Reference point
approach
If the utilized distance measuring system is not an absolute value
encoder then it is necessary to perform a reference point approach to
ensure that the actual values returned by the measuring system
match the machine coordinate values.
REPOS
1. Repositioning on the contour via the controls
With the Repos function it is possible to re-approach the
interruption point by means of the direction keys.
2. Repositioning on the contour via the program
Several approach strategies are available through program
commands: approaching the interruption point, approaching the
block starting point, approaching the block end point, approaching
a point on the path between the start of the block and the
interruption point.
Retentive/non-volatile
data
Data areas in data blocks and times, counters and markers are
retentive (non-volatile) if their contents are not lost when the system is
restarted or the mains supply is disconnected.
Rotation
Component of a -> frame which defines a rotation of the coordinate
system through a specific angle.
Rotary axis
Rotary axes rotate a workpiece or tool to a defined angular position.
Rotary axis, endlessly
turning
Depending on the application, the traversing range of a rotary axis
can be selected to be limited to less than 360 degrees or to be
endlessly turning in both directions. Endlessly-turning rotary axes are
used for non-circular turning, grinding, and winding.
R parameters
Arithmetic parameter for which the programmer of the -> parts
program can freely assign or request values in the program.
Rounding axis
Rounding axes rotate a workpiece or tool to an angular position
corresponding to an indexing grid. On reaching a grid, the rounding
axis is “in position”.
Siemens AG, 2004. All rights reserved.
A-160 SINUMERIK 840D/840Di/810D Operator’s Guide Handheld Terminal 6 (BAH) - 03.04 Edition
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