Led Display - Siemens SINUMERIK ONE PPU 1740 Series Equipment Manual

System characteristics
3.2 Operator controls and display elements
3.2.2

LED display

Figure 3-6
Meaning of the RUN/STOP, ERROR and MAINT PLC-LEDs
RUN/STOP LED
LED off
LED off
LED lights up green
LED lights up green
LED lights up green
LED lights up green
LED lights up yellow
LED lights up yellow
LED lights up yellow
28
LED display
ERROR LED
LED off
LED flashes red
LED off
LED flashes red
LED off LED lights up yellow
LED off
LED flashes yellow
LED off
LED flashes yellow
LED off
LED flashes red LED flashes yellow
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
Diagnostic event pending.
LED off
A plant maintenance request is pending.
The affected hardware must be validated/replaced
within a short interval.
Active force job
PROFIenergy pause
A plant maintenance requirement is pending.
The affected hardware must be validated/replaced
within a foreseeable interval.
Configuration faulty
Firmware update completed successfully.
CPU is in STOP operating state.
LED off
The program on the SIMATIC Memory Card cau‐
ses a fault.
CPU defective
Meaning
Equipment Manual, 01/2019, A5E47615272B AA
PPU 1740