Siemens CP 1515 User Manual page 257

You are advised to save the configuration parameters of the Radio Link
Module to a back-up file (*.cnf). To create a back-up file, use the
option from the Radio Link Module menu.
You are advised to create a back-up file, to anticipate future network errors
that might force you to do a forced reload in the future.
Save the back-up file under a name that allows for easy identification in the
future.
On reboot, the RLM will do start-up diagnostics characterized by a LED
sequence, where the LEDs will change color in the range Amber, Red and
Green.
The start-up diagnostics take approximately 15 seconds. When finished the
RLM will start bridge operation characterized by the LED activity. See
Troubleshooting (page 236)
Industrial Ethernet Wireless LAN RLM Manager, CP 1515 Manager
C79000-G8976-C171-01
for more information.
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