System overview
2.2 System configuration
NCU 7x0.2
14 Manual, 02/2011, 6FC5397-0AP20-0BA0
2.2 System configuration
SINUMERIK 840D sl combines CNC, HMI, PLC, closed-loop control, and communication
tasks within a single NCU (Numerical Control Unit).
Components
For operation, programming, and visualization purposes, the corresponding operating
software is already integrated into the CNC software for the NCU and therefore runs on the
high-performance NCU multi-processor module. For increased operating performance, the
SINUMERIK PCU 50.3 industrial PC can be used.
Up to four distributed OPs can be operated on one NCU/PCU. The operator panel can be
installed as a Thin Client at a distance of up to 100 m.
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Figure 2-1 Typical topology of the SINUMERIK 840D sl complete system
The following components can be attached to the Control Unit:
● SINUMERIK operator panel front with TCU/PCU 50.3 and Machine Control
Panel/Machine Push Button Panel
● SIMATIC thin client (as of firmware V1.4)
● SIMATIC CE panel
● SINUMERIK handheld units
● Distributed PLC I/O via PROFIBUS DP or PROFINET I/O (only applies to NCU 720.2 PN
and NCU 730.2 PN)
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