General Information on the SINUMERIK 840Di sl
1.1 Overview of SINUMERIK 840Di sl
Manual
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
21
Operator panel front
The operator panel fronts from the SINUMERIK-spectrum (OP 010, OP 010C, OP 010S, OP
012, OP 012T, OP 015, OP 015A, TP 015A) are optionally available as operating
components.
TCU
A TCU (Thin Client Unit) permits the distributed connection of an operator panel front to the
PCU. The TCU and PCU communicate via the Ethernet.
1.1.4
Software components
The SINUMERIK 840Di sl is based on the following software components:
Windows XP
SINUMERIK 840Di sl runs on the Windows XP ProEmbSys operating system with Service
Pack 2.
Windows XP is the platform on which all applications, such as the individual user interfaces
of the HMI modular system and the commissioning tools run.
As is generally known, Windows XP does not have full real-time capability. We call this soft
real time. So SIEMENS has developed a procedure that allows operation of NC system
software in hard real time without making it necessary to modify Windows XP (see
Subsection "Real-time properties" (Page 23)).
NC system software
The NC system software mostly has the same functionality as the SINUMERIK 840D. It
comprises both simple Motion Control processes (positioning and linear interpolation) and
complex automation tasks of the type found on machining centers, handling and mounting,
machine tools, and machine tool-related applications.
NCK
The NCK (Numeric Control Kernel) is part of the NC System software that realizes the real-
time capability of SINUMERIK 840Di sl.
The NCK is characterized by the following features:
●
The NCK is automatically started when Windows powers up.
●
The NCK runs cyclically in the background.
●
The current status of the NCK is displayed via the SINUMERIK 840Di sl-standard
operator panel 840Di-Startup:
Menu command Window > Diagnosis > NC/PLC
●
The NCK is automatically ended when you exit Windows XP.
●
When the NCK is ended, it writes the remanent SRAM data from NCK and PLC to the
hard disk of the PCU as a backup copy.
