Description of the device 
  3.4 RESET button 
SCALANCE XR-300WG 
Operating Instructions, 05/2017, C79000-G8976-C454-01 
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Pluggable transceiver slots 
There is an LED for each plug-in transceiver slot. 
 
Yellow  Flashing  Data transfer at the port 
 
 
Do not press the RESET button if there is a potentially explosive atmosphere. 
The "RESET" button is located on the front of the SCALANCE XR-300WG. 
 
Figure 3-1  Position of the "RESET" button on the SCALANCE XR-300WG 
Resetting the device to factory defaults 
 
If you reset, all the settings you have made will be overwritten by factory defaults. 
 
An inadvertent reset can cause disturbances and failures in the configured network.