Glossary
Glossary-16 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Reference point
Machine tool position that the measuring system of the → machine axes references.
Rigid tapping
This function enables rigid tapping. Using interpolating motion of the spindle as a rotary axis
and the drilling axis, threads are cut exactly to the final drilling depth, e.g., blind hole threads
(requirement: axis mode of spindle).
Rotary axis
Rotary axes rotate a workpiece or tool to a defined angular position.
Rotation
Component of a → frame that defines a rotation of the coordinate system around a particular
angle.
Rounding axis
Rounding axes rotate a workpiece or tool to an angular position corresponding to an
indexing grid. When a grid index is reached, the rounding axis is "in position".
R parameters
Arithmetic parameter that can be set or queried by the programmer of the → part program for
any purpose in the program.
Safety functions
The control is equipped with permanently active montoring functions that detect faults in the
→ CNC, the → PLC, and the machine in a timely manner so that damage to the workpiece,
tool, or machine is largely prevented. In the event of a malfunction, the machining sequence
is interrupted and the drives are stopped and the cause of the malfunction is saved and
displayed as an alarm. At the same time, the PLC is informed that a CNC alarm is pending.
Scaling
Component of a → frame that implements axis-specific scale modifications.
Serial RS-232-C interface
For data input/output, the PCU 20 has one serial V.24 interface (RS232) while the
PCU 50/70 has two V.24 interfaces. Machining programs and manufacturer and user data
can be loaded and saved via these interfaces.
Setting data
Data that communicate properties of the machine tool to the NC control in a manner defined
by the system software.
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