Siemens SINUMERIK 840D Operator's Manual page 156

A
Appendix
B Terms
N
Name of identifier
NC
NCK
Network
Node number
NURBS
NRK
O
OEM
A-156
The words according to DIN 66025 are supplemented by the
identifiers (names) for variables (computer variable, system variable,
user variable), for subroutines, for vocabulary words and words with
several address letters. In terms of the block structure, these
supplements have the same significance as the words. Identifiers
must be unique. The same identifier must not be used for different
objects.
Numerical Control: NC control incorporates all the components of the
of the machine tool control system: -> NCK, -> PLC, -> MMC, ->
COM.
Note: CNC (Computerized Numerical Control) is a more accurate term
for the controls SINUMERIK 840D and FM-NC.
Numeric Control Kernel: Component of the NC control which executes
-> parts programs and essentially coordinates the movements on the
machine tool.
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.
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".
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 control (SINUMERIK
840D).
Numeric Robotic Kernel (operating system of the -> NCK)
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.
SINUMERIK 840D/840Di/810D Operator's Guide Handheld Terminal 6 (BAH) - 03.04 Edition
A
03.04
 Siemens AG, 2004. All rights reserved.