Led Displays - Siemens SINUMERIK ONE NCU 1750 Equipment Manual

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Figure 4-4
4.4.2

LED displays

Meaning of the RUN/STOP, ERROR and MAINT PLC-LEDs
RUN/STOP LED
LED off
LED off
NCU 1750
Equipment Manual, 01/2022, A5E45627807B AE
LED display
7-segment display
NCK commissioning switch (rotary switch)
Reset button
Diagnostics button
PLC mode selector switch (toggle switch)
Position of operator control and display elements
ERROR LED
LED off
LED flashes red
4.4 Operator control and display elements
MAINT LED
Supply voltage at the CPU not present or too low.
LED off
An error has occurred.
LED off
Description
Meaning
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