W&T Electronics Web-Thermo-Hygrobarograph PoE 57612, Руководство пользователя

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7.4 Emergency access
The serial connection (DTE) of the device provides emergency
access. This is activated as follows:
Use a serial cable (null modem cable: pins 2, 3 5 only) to connect
the unit to a PC and start a serial terminal program. Make the
program settings as follows:
9600,8,N,1,no handshake
Disconnect the supply voltage. Press the following letters on your
keyboard 3 times for the respective access:
3x „u“ Opens the update port. You can now load a
firmware update.
3x „f“ Resets the device to the factory defaults. All
previous configuration settings (including IP
address) are lost.
3x „p“ Deletes all assigned passwords.
For confirmation the system error and the on error http LEDs
flash several times one after the other.
3x „x“ (Directly after pressing the Reset button, before
the audible tone). Used for assigning/changing
the IP address. When prompted, enter the
desired IP address.