Plc-Nck Interface; Mode Signals - Siemens SINUMERIK 840D sl Function Manual

14.5.1

PLC-NCK interface

These cyclic data include, e.g. status signals ("Program running", "Program interrupted"),
control signals (Start, Stop) and auxiliary and G functions.
Data are structured in signals for:
● Mode signals
● NC channel signals
● Axis and spindle signals
● General NCK signals
● Fast data exchange PLC-NCK
14.5.1.1

Mode signals

DB3000, 3100
The mode signals specified by the machine control panel or the HMI are transferred to the
NCK.
There actual states are signaled to the PLC from the NCK.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
P4: PLC for SINUMERIK 828D
14.5 Data interface
1087