Glossary
Basic Functions
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
NC
Numerical Control: Numerical control (NC) includes all components of machine tool control: → NCK, → PLC,
HMI, → COM.
NCK
Numerical Control Kernel: Component of NC that executes the → part programs and basically coordinates the
motion operations for the machine tool.
Network
A network is the connection of multiple S7-300 and other end devices, e.g. a programming device via a →
connecting cable. A data exchange takes place over the network between the connected devices.
NRK
Numeric robotic kernel (operating system of → NCK)
NURBS
The motion control and path interpolation that occurs within the control is performed based on NURBS (Non
Uniform Rational B-Splines). As a result, a uniform process is available within the control for all interpolations for
SINUMERIK 840D.
OEM
The scope for implementing individual solutions (OEM applications) for the SINUMERIK 840D has been provided
for machine manufacturers, who wish to create their own operator interface or integrate process-oriented
functions in the control.
Operator Interface
The user interface (UI) is the display medium for a CNC in the form of a screen. It features horizontal and vertical
softkeys.
Oriented spindle stop
Stops the workpiece spindle in a specified angular position, e.g. in order to perform additional machining at a
particular location.
Note
A more correct term for SINUMERIK 840D controls would be: Computerized Numerical
Control