Campbell Scientific CS475, CS476, and CS477 Radar Water Level Sensor - Manual (Page 42)

Appendix B. SDI-12 Commands/Changing Settings
TABLE B-3. Example of Setting Address
Initial Command Response
0A1!
Where 0 is the original address
and 1 is the new address. 1
The new address (1) is set in response.
B.1.4 Set Units
The distance measurement can be reported in feet (default) or meters. Change
the units by first using the aXSU+n! command (where n = 1 (feet) or 0
(meters)) followed by the aXGU! (Get Units) command. TABLE B-4 shows
an example of the command and response for changing this setting.
TABLE B-4. Example of Setting Units
Initial Command Response
0XSU+0!
Where the first zero is the sensor
address and the second zero sets the
units to meters. 00011
Where (from left to right),
0—sensor’s address;
001—the amount of time (in seconds)
that you must wait before sending
another command;
1—the number of values that will be
placed in the buffer.
Subsequent Command Response
0XGU!
Where zero is the sensor address.
This is the get units command. 0+0
Where the first zero is the sensor
address and the second zero indicates
that the units are now meters.
B.1.5 Set Water Conditions
The Set Water Conditions command adapts the sensor to different water
conditions.
There are four different settings:
• 0 (custom setting)
• 1 (smooth—typical peak to trough of wave < 4”)
• 2 (medium—typical peak to trough of wave < 8”)
• 3 (rough—typical peak to trough of wave > 8”)
B-4