Siemens SINUMERIK 840DE Programming Manual page 490

Glossary
Note
CNC (Computerized Numerical Control) is a more accurate term for the SINUMERIK 840D
controls. MARS and Merkur controls.
NCK
Numerical Control Kernel: Component of the NC control, which executes -> parts programs
and essentially coordinates the movements on the machine tool.
Network
The term "network" describes the connection of several S7-300 and other terminal devices,
e.g., a programming device, via -> interconnecting cables. A data exchange takes place over
the network between the connected devices.
Node number
The node number represents the "contact address" of a -> CPU or the -> programming
device or any other intelligent periphery module if these are communicating via a -> network
with each other. The node number is assigned to the CPU or the programming device with
the S7 tool -> "S7 configuration".
NRK
Numeric Robotic Kernel (operating system of the -> NCK)
NURBS
Internal motion control and path interpolation are performed using NURBS (non-uniform
rational B-splines). This provides a uniform internal method for all interpolations in the
SINUMERIK 840D control.
OEM
For machine manufacturers who manufacture their own user interface or wish to integrate
their own technology-specific functions in the control, free space has been left for individual
solutions (OEM applications) for SINUMERIK 840D.
Offset memory
Data range in the control, in which the tool offset data are stored.
Operating mode
An operating concept on a SINUMERIK control. The operating modes -> Jog, -> MDA and ->
Automatic are defined.
Glossary-14
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals