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Appendix B. Entering SDI-12 Commands/Changing Settings

B.1.3 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”)

The factory default water conditions are set to 1, which is smooth. The water

condition settings should closely mimic the actual water conditions during

normal river flow.

Change this setting by first using the aXSWC+n! command (where n=0

(custom), 1 (smooth), 2 (medium), or 3 (rough)) followed by the aXGWC!

(Get Water 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.1.4 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.)

B-4

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Campbell CS475 Specifiche Pagina 34

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