6.4.3 Changing the Communication Settings (aXU)
Use this command to change communication settings.
Command f
ormat in ASCII and NMEA 0183:
aXU,A=x,M=x,C=x,I=x,B=x,D=x,P=x,S=x,L=x<cr><lf>
Command f
ormat in SDI-12:
aXXU,A=x,M=x,C=x,I=x,B=x,D=x,P=x,S=x,L=x!
A, M, C, I, B, D,
P, S,L
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 in
t
erface 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
disconnec
ting the service cable or using the reset command aXZ.
Example (ASCII and NMEA 0183, device address 0):
Changing the devic
e address from 0 to 1:
0XU,A=1<cr><lf>
1XU,A=1<cr><lf>
Checking the changed se
t
tings:
Chapter 6 – Connection Options
75
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