Changing the communication settings (aXU) - WXT530

WXT530 Series User Guide

Document code
M211840EN
Revision
F
Language
English (United States)
Product
WXT530
Document type
User guide

Use this command to change communication settings.

Command format in ASCII and NMEA 0183:

aXU,A=x,M=x,C=x,I=x,B=x,D=x,P=x,S=x,L=x,H=x,O=x<cr><lf>

Command format in SDI-12:

aXXU,A=x,M=x,C=x,I=x,B=x,D=x,P=x,S=x,L=x,H=x,O=x!
A, M, C, I, B, D, P, S, L, H, O The communication setting fields.
x Input value for the setting
<cr><lf> Command terminator in ASCII and NMEA 0183
! Command terminator in SDI-12

When changing the serial interface and communication protocol, note the following:

Each serial interface requires its specific wiring and/or jumper settings.

Change first the serial interface field C and then the communication protocol field M.

Changing the serial interface to SDI-12 (C=1) automatically changes the baud settings to 1200, 7, E, 1 and the communication protocol to SDI-12 (M=S).

Reset the transmitter to validate the changes of communication parameters by disconnecting the service cable or using the reset command aXZ.

Example (ASCII and NMEA 0183, device address 0):

Changing the device address from 0 to 1:

0XU,A=1<cr><lf>

1XU,A=1<cr><lf>

Checking the changed settings:

1XU<cr><lf>

1XU,A=1,M=P,T=1,C=2,I=0,B=19200,D=8,P=N,S=1,L=25, N=WXT530V=1.0,H=0,O=1<cr><lf>

Example (ASCII, device address 0):

Changing RS-232 serial interface with ASCII, polled communication protocol and baud settings 19200, 8, N, 1 to RS-485 serial interface with ASCII, automatic protocol and baud settings 9600, 8, N, 1.

Checking the settings:

0XU<cr><lf>

0XU,A=0,M=P,C=2,I=0,B=19200,D=8,P=N,S=1,L=25,N=WXT530, V=1.0,H=0,O=1<cr><lf>
You can change several parameters in the same command as long as the command length does not exceed 32 characters (including command terminator characters ! or <cr><lf>).You do not have to type setting fields you do not wish to change.

Changing several settings with one command:

0XU,M=A,C=3,B=9600<cr><lf>

0XU,M=A,C=3,B=9600<cr><lf>

Checking the changed settings:

0XU<cr><lf>

0XU,A=0,M=A,T=1,C=3,I=0,B=9600,D=8,P=N,S=1,L=25, N=WXT530,V=1.0,H=0,O=1<cr><lf>