Siemens SINUMERIK 802D sl Function Manual page 453

Programmable working area limitation
Limitation of the motion space of the tool to a space defined by programmed limitations.
Protection zone
Three-dimensional zone within the → working area into which the tool tip must not pass.
R parameters
Arithmetic parameter that can be set or queried by the programmer of the → part program for
any purpose in the program.
Rapid feed
The highest traverse rate of an axis. For example, rapid traverse is used when the tool
approaches the → workpiece contour from a resting position or when the tool is retracted
from the workpiece contour. The rapid traverse velocity is set on a machine-specific basis
using a machine data element.
Rapid stop
A rapid stop is an NC function relating to error states. If an error state is detected, this is
displayed by way of an alarm. A rapid stop is one of the responses which can be set for
these alarms. As part of this, "0" is immediately specified as the speed setpoint for the
machine axis affected, without a braking ramp. This will cause the relevant drives to brake to
a standstill as quickly as possible; i.e. at their respective current limits.
Reference point
Machine tool position that the measuring system of the → machine axes references.
Rotary axis
Rotary axes apply a workpiece or tool rotation to a defined angular position.
Rotation
Component of a → frame that defines a rotation of the coordinate system around a particular
angle.
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 fault, the machining operation is
interrupted and the drives stopped. The cause of the malfunction is logged and output as an
alarm. At the same time, the PLC is notified that a CNC alarm has been triggered.
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0
Glossary
453