Function interface
The function interface is formed by FBs and FCs. The figure below illustrates the general
structure of the interface between the PLC and the NCK.
Figure 13-2
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
PLC/NCK user interface
P3: Basic PLC program for SINUMERIK 840D sl
13.9 Interface structure
837