Siemens SINUMERIK ONE PPU 1740 Series Equipment Manual page 30

System characteristics
3.2 Operator controls and display elements
Name Function
COM Communi‐
cation
DIAG Diagnostics
SD Activity
LED
(directly on
the card slot)
Important LED states
● If all the LEDs are flashing, the PLC must be reset (general reset) via the mode selector
switch.
● While the PPU is ramping up, all LEDs briefly light up orange. You can carry out a detailed
diagnosis using a PG/PC and the operating software.
Additional references
● For information on drive faults and alarms, see also:
SINAMICS S120/S150 List Manual (LH1)
30
Status Meaning
CP not ramped up / started
LED off
Communication via CP possible (RUN operating state)
LED lights up green
Communication possible (no configuration)
LED flashes green
CP was stopped via PLC/TIA. No communication.
LED lights up yellow
Configuration received and transition to the RUN operating state.
LED flashes yellow
Error status (FATAL error)
LED flashes red
Everything OK.
LED lights up green
Software-related fault is pending. Generate the diagnostic data with
the Diag button and so contact the Hotline.
LED lights up yellow
The data backup operation initiated with the Diag button is running.
LED flashes yellow
(0.5 Hz)
HW-related tests fail, e.g. memory test during switch on.
If no change occurs after multiple switch off/on, replace the device.
LED lights up red
No SD card inserted.
LED off
Active access to SD card
LED flashes yellow
Equipment Manual, 01/2019, A5E47615272B AA
PPU 1740