Description of the device
2.4 LED display
SCALANCE M874, M876
Operating Instructions, 08/2018, C79000-G8976-C331-08
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F OFF
No fault/error.
ON
The device is starting up or an error has occurred.
Possible errors/faults:
• Wrong PIN number
Flashing
The bootloader waits in this state for a new firmware file that you can
download using TFTP.
Flashing
at the interval:
2000 ms on /
Firmware on PLUG
The device is performing a firmware update or downgrade.