Led Displays - Siemens SINUMERIK ONE NCU 1740 Equipment Manual

Description
4.4 Operator control and display elements
①
②
③
④
⑤
⑥
Figure 4-5
4.4.2

LED displays

Meaning of the RUN/STOP, ERROR and MAINT PLC-LEDs
RUN/STOP LED
LED off
LED off
LED lights up green
34
LED display
7-segment display
PLC mode selector switch (toggle switch)
Reset button
Diagnostics button
NCK commissioning switch (rotary switch)
Position of operator control and display elements
ERROR LED
LED off
LED flashes red
LED off
MAINT LED
Supply voltage at the CPU not present or too low.
LED off
An error has occurred.
LED off
The CPU is in the RUN operating state.
LED off
Meaning
Equipment Manual, 10/2021, A5E51087503B AA
NCU 1740