In order for a WXT520 to work with NexSens’ WeatherVIC software, it needs to communicate in RS-232 ASCII mode.
1) Connect the WXT520 to a PC COM port.
2) Open HyperTerminal set to 1200 baud, even parity, 7 data bit, 1 stop bit.
3) Note that all text entered on the HyperTerminal is not displayed. Care must be exercised to enter the command correctly. Try entering the commands a few times if the result is not as expected. Upper and lower case matter.
4) Type the following command in the terminal to confirm that the WXT520 is in SDI-12 mode:
0XXU!
The WXT520 responds with:
0XXU,A=………
5) Now type the following command in the terminal:
0XXU,M=A,C=2,B=19200,D=8,P=N,S=1!
The WXT520 responds with:
0XXU,A=………
6) Close the HyperTerminal.
7) Reopen the HyperTerminal set to 19200 baud, no parity, 8 data bit, 1 stop bit.
8) Cycle power on the WXT520.
9) The WXT520 should output the readings.
REV: 13J06