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NCK commissioning switch
Figure 4-6
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
MRES
Figure 4-7
Restoration of the factory settings when the PLC powers up
While the control system powers up, you can delete the user program of the PLC via the toggle
switch position MRES. When doing this, the PLC SD Card is cleared and the remanent data
initialized. The PLC IP addresses of the X150/X160 interfaces assigned via the TIA Portal are also
deleted.
NCU 1740
Equipment Manual, 09/2022, A5E51087503B AC
NCK commissioning switch
NC operating mode
0
NCK normal run-up, setting in normal operation
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 file)
All others
Not relevant
Places the PLC in the RUN operating state. Setting in normal operation.
Places the PLC in the STOP operating state.
Triggers a general reset of the PLC.
PLC mode switch
4.4 Operator control and display elements
Description
41
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