Siemens SINUMERIK 840D sl Manual page 30

Description
4.2 Illustration
Figure 4-1 Representation of the NCU 720.1/730.1/730.2
Control Units with PROFINET
The following figure shows an NCU 720.2 PN/730.2 PN with its interfaces and control and
display elements (fault LEDs and status indicators).
CAUTION
The PROFINET interfaces of the integrated PLC 319-3 PN/DP are permanently assigned to
the option slot on the "PN NCUs". Forceful removal of the interface module will cause
defects, which can only be repaired at the factory.
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Manual, 07/2007, 6FC5397-0AP10-2BA0
NCU