Campbell CS475, Instruction Manual

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Appendix C. SDI-12 Commands/ Changing Settings
C-6
Subsequent Command Response
0D0!
Where the first zero is the sensor’s
address.
0+2<cr><If>
Where,
0—sensor’s address;
2—the new water condition setting
(2 = medium).
Initial Command Response
0XGWC!
Where zero is the sensor address.
This is the send water conditions
command.
00011<cr><If>
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
0D0!
Where the first zero is the sensor’s
address.
0+2<cr><If>
Where,
0—sensor’s address;
2—the water condition setting
(2 = medium).
C.1.6 Set Power Operation Mode
The following three power operation modes are available:
•
1 (ON—sensor is always on until a new set power command is
received.)
• 2 (AUTO—sensor is powered by an incoming request from the SDI-
12 bus and sends back a response including the information on power
up time.)
• 0 (OFF—this mode is typically not recommended; sensor is
completely off until a new set power command is received)
The OFF power mode should only be used by advanced
users who want to turn the sensor off for extended time
periods. In this mode, the sensor is completely off and only
responds to a new set power command.
The factory default Power Operation Mode is 1 (ON). In this mode of
operation, the instrument is continuously making measurements and draws
approximately 13.5 mA. The AUTO Power Operation Mode puts the
instrument in quiescent mode between measurement request queries.
Change this setting by first using the n! command (where n=1 (on),
2 (auto), or 0 (off)) followed by the
aXGPOM!
( Get Power Mode ) command.
TABLE C-8 shows an example of the command and response for changing this
setting.
CAUTION