Description of the device
2.5 SET button
SCALANCE M874, M876
Operating Instructions, 08/2018, C79000-G8976-C331-08
29
The SET button has the following functions:
● Restart
Hold down the button for shorter than 3 seconds to run a restart.
● Loading new firmware
If the normal procedure with the "Load & Save" menu of Web Based Management does
not work, the reset button can be used to load new firmware. This situation can occur if
there is a power outage during the normal firmware update.
– Hold down the button until the red fault LED (F) starts to flash after approximately 3
seconds.
– Now release the button. The bootloader waits in this state for a new firmware file that
you can download using TFTP.
You will find more information in the section "Service and Maintenance" in the
SCALANCE M-800 Web Based Management configuration manual.
● Reset to factory defaults
– Hold down the button until the red fault LED (F) stops flashing after approximately 10
seconds and is permanently lit.
– Now release the button and wait until the fault LED (F) goes off again. The device then
starts automatically with the factory settings and can be reached via the IP address
192.168.1.1.
You will find more information in the section "Service and Maintenance" in the
SCALANCE M-800 Web Based Management configuration manual.
Do not press the SET button if there is a potentially explosive atmosphere.
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