Siemens SINUMERIK 840Di Function Manual page 944

Detailed description
2.6 Interface structure
Fig. 2-4
Digital/analog inputs/outputs of the NCK
The following must be noted with respect to the digital and analog inputs and outputs of the
NCK:
Inputs:
• All input signals or input values of the NCK are also transferred to the PLC.
• The transfer of signals to the NC parts program can be suppressed by the PLC. Instead,
• The PLC can also transfer a signal or value to the NCK even if there is no hardware for
2-32
PLC/NC interface
a signal or value can be specified by the PLC.
this channel on the NCK side.
Power Line Basic PLC Program (P3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0