3.2.2
LED display
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Figure 3-6
LED display
Meaning of the RUN/STOP, ERROR and MAINT PLC-LEDs
RUN/STOP LED
ERROR LED
MAINT LED
Meaning
LED off
LED off
LED off
Supply voltage at the CPU not present or too low.
LED off
LED flashes red
LED off
An error has occurred.
LED lights up green
LED off
LED off
The CPU is in the RUN operating state.
LED lights up green
LED flashes red
LED off
Diagnostic event pending.
LED lights up green
LED off
LED lights up yellow
A plant maintenance request is pending.
The affected hardware must be validated/replaced
within a short interval.
Active force job
PROFIenergy pause
LED lights up green
LED off
LED flashes yellow
A plant maintenance requirement is pending.
The affected hardware must be validated/replaced
within a foreseeable interval.
Configuration faulty
LED lights up yellow
LED off
LED flashes yellow
Firmware update completed successfully.
LED lights up yellow
LED off
LED off
CPU is in STOP operating state.
LED lights up yellow
LED flashes red
LED flashes yellow
The program on the SIMATIC Memory Card cau‐
ses a fault.
CPU defective
System characteristics
3.2 Operator controls and display elements
PPU 1740
28
Equipment Manual, 01/2019, A5E47615272B AA
Summary of Contents for SINUMERIK ONE PPU 1740 Series
Page 22: ...System overview 2 2 System configuration PPU 1740 22 Equipment Manual 01 2019 A5E47615272B AA ...
Page 82: ...Interface description 7 7 USB PPU 1740 82 Equipment Manual 01 2019 A5E47615272B AA ...
Page 92: ...Connectable components 8 1 NX10 3 NX15 3 PPU 1740 92 Equipment Manual 01 2019 A5E47615272B AA ...
Page 100: ...Spare parts and accessories PPU 1740 100 Equipment Manual 01 2019 A5E47615272B AA ...