METEK GmbH uSonic-2
Example: AT=10 <ENTER> The user is setting the Averaging Time
to 10s.
C:AT=10 The uSonic-2 is confirming the command.
System parameters can be asked while entering the parameter name,
followed by a „?“:
Example: AT?<ENTER> The user is asking for the Averaging Time
C:AT? The uSonic-2 is confirming the command
R:AT=10 The uSonic-2 is displaying the
Averaging Time
Asking all system parameter:
If you type just a „?“ and the <ENTER>- key, the uSonic-2 displays all system
parameters, the firmware version and its serial number.
Tip: You can record the terminal session and store the whole configuration
(„?“ and the <ENTER>- key) of the uSonic-2 . (Example HyperTerminal:
Connection – record text)
A detailed description of all parameters you will find in chapter 6.
3.2 RS485-mode
The RS422- interface of the uSonic-2 can also be used on a RS485- bus.
You can choose between a 2-wire-connection and a 4-wire-connection
half-duplex-mode.
To start the RS485- mode, an individual address has to be entered. If this is
done, the uSonic-2 will just respond to commands including this address.
The automatic data output of the uSonic-2 is stopped. The uSonic-2 will just
send required data.
To require data, the commands RD (output of the latest averaged data) or
AA (abort running averaging and output of the data) can be used.
The transmit line (TX) is in “tri- status”- condition, while no transmission is
active. The transmit line is high- impedance and other devices of the bus are
not affected.
To secure an organized traffic on the bus, a host- pc is necessary.
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