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Description
4.4 Operator control and display elements
NCK commissioning switch
Figure 4-5
Switch position
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.
PLC mode switch
RUN
STOP Places the PLC in the STOP operating state.
MRE
S
Figure 4-6
Restoration of the factory settings during PLC run-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.
40
NCK commissioning switch
NC operating mode
0
Standard run-up NCK
1
General reset (NCK run-up with default values)
2
NCK runs up with the data that was saved at the last shutdown.
7
Debug mode (NCK is not started); the SSH port tcp/22 is open at X130
8
IP address for X130 of the NCU appears on the 7-segment display; the NCK is not
started; the PLC remains at STOP
9
SSH port tcp/22 is open at X130 (without any entry in basesys.ini)
All others
Not relevant
Places the PLC in the RUN operating state. Setting in normal operation.
Initiates the PLC general reset.
PLC mode switch
Equipment Manual, 01/2022, A5E45627807B AE
NCU 1750
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