Chapter 6 ________________________________________________________ Connection Options
VAISALA_______________________________________________________________________ 59
Changing the Communication
Settings (aXU)
Make the desired setting with the following command. Select the
correct value/letter for the setting fields, see Setting Fields on page 57.
See also the examples.
Command format in ASCII and NMEA 0183:
aXU,A=x,M=x,C=x,B=x,D=x,P=x,S=x,L=x<cr><lf>
Command format in SDI-12:
aXXU,A=x,M=x,C=x,B=x,D=x,P=x,S=x,L=x!
where
A, M, C, I,
B, D, P, S,L
= The communication setting fields, see Setting Fields
on page 57.
x = Input value for the setting
<cr><lf> = Command terminator in ASCII and NMEA 0183
! = Command terminator in SDI-12
NOTE
When changing the serial interface and communication protocol, note
the following:
Each serial interface requires its specific wiring and/or jumper settings
described in Chapter 5, Wiring and Power Management, on page 39.
Change first the serial interface field C and then the communication
protocol field M.
Changing the serial interface to SDI-12 (C=1) will automatically
change the baud settings to 1200, 7, E, 1 and the communication
protocol to SDI-12 (M=S).
NOTE
Reset the sensor to validate the changes of communication parameters
by disconnecting the service cable or using the Reset (aXZ)
command, see Reset (aXZ) on page 62.
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