Start-Up And Mode Selector Switch - Siemens SINUMERIK ONE NCU 1760 Equipment Manual

3.4.4

Start-up and mode selector switch

Arrangement
The NCU is equipped with an NCK rotary coding switch and a PLC mode selector switch in the
form of a toggle switch with three settings:
● NCK commissioning switch:
Setting in normal operation: "0"
Note
Switch position when booting the service system
When booting the service system, it is not permissible that the rotary switch is in the "0"
position, as in the "0" position, the NCU always boots from the integrated memory and from
the SD card.
Figure 3-5
● The PLC mode selector switch:
Setting during normal operation: "Run"
Figure 3-6
Restoration of the factory settings when the PLC powers up
While the control system powers up the PLC can be restored to the initial delivery condition with
the toggle switch position MRES. When doing this, the PLC SD card is cleared and the
remanent data initialized. The PLC IP address assigned via the TIA Portal is also cleared.
NCU 1760
Equipment Manual, 02/2020, A5E45627861B AB
NCK commissioning switch
RUN Places the PLC in the RUN operating state.
STO Places the PLC in the STOP operating state.
P
MRE Initiates the PLC reset.
S
PLC mode selector switch
3.4 Operator control and display elements
Description
33