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Appendix B. SDI-12 Commands/Changing Settings

B-5

Conditions) command. Table B-5 shows an example of the command and response

for changing this setting.

Table B-5. Example for Setting Water Conditions

Initial Command Response

0XSWC+2!

Where,

0—sensor’s address;

2—the new water condition setting

(2 = medium).

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

0XGWC!

Where zero is the sensor address.

This is the send water conditions

command.

0+2<cr><If>

Where,

0—sensor’s address;

2—the new water condition setting

(2 = medium).

B.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 aXSPOM+n! command (where n=1 (on),

2 (auto), or 0 (off)) followed by the aXGPOM! (Get Power Mode) command.

Table B-6 shows an example of the command and response for changing this

setting.

CAUTION

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Campbell CS475 Manuel d'utilisateur Page 43

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