Siemens SINUMERIK 840DE Programming Manual page 495

cut to a precise final drilling depth, e.g., for blind hole threads (requirement: spindles in axis
operation).
Rotary axis
Rotary axes rotate a workpiece or tool to a defined angular position.
Rotary axis, continuously 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.
Rotation
Component of a -> frame, which defines a rotation of the coordinate system through a
specific 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".
S7-300 bus
The S7-300 bus is a serial databus by means of which the modules communicate with each
other and are supplied with the required voltage. The connections between the modules are
made with the -> bus connectors.
S7-Configuration
S7 configuration is a tool with the aid of which modules can be parameterized. With S7
configuration, various parameter blocks of the -> CPU and the I/O modules are set on the ->
programming device. These parameters are transmitted to the CPU.
Safety functions
The controls contain watchdog monitors, which are always active. These monitors detect
problems in the CNC, PLC or machine in time to prevent damage to workpiece, tool or
machine as far as possible. In the event of a malfunction the machining sequence is
interrupted and the drives are stopped, 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, which causes axis-specific scale modifications.
Serial RS-232-C interface
For data input/output there is
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Glossary
Glossary-19