System overview
1.2 System configuration
Guide for the SINUMERIK 840D sl machine configuring
1-2 Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
1.2 1.2 System configuration
The heart of the SINUMERIK 840D sl is the Numerical Control Unit (NCU). It combines NCK,
HMI, PLC, closed-loop control and communication tasks.
Components
With the TCU (Thin Client Unit), the operator panel can be installed as much as 100 meters
away. Up to 2 distributed OPs can be operated on an NCU 710 and as many as 4 distributed
OPs on an NCU 720/730 or PCU 50.3.
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Figure 1-1 Typical topology of the SINUMERIK 840D sl compact system
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