Campbell CS475 Specifiche Scaricare il pdf (Pagina 17)

CS475, CS476, and CS477 Radar Water Level Sensor

The SDI12Recorder instruction has the following parameters:

Dest The Dest parameter is a variable in which to store the results

of the measurement. Dest must have enough elements to

store all the data that is returned by the sensor or a 'variable

out of range' error will result during the execution of the

instruction.

SDIPort The SDIPort parameter is the port to which the SDI-12

sensor is connected. A numeric value is entered:

Code

Description

1 Control Port 1

3 Control Port 3

5 Control Port 5

7 Control Port 7

SDIAddress The SDIAddress parameter is the address of the sensor that

will be affected by this instruction. Valid addresses are 0

through 9, A through Z, and a through z. Alphabetical

characters should be enclosed in quotes (e.g., "0").

SDICommand The SDICommand parameter is used to specify the

command strings that will be sent to the sensor. The

command should be enclosed in quotes. See Table 6-1

shows the specific SDI-12 Command Codes and their

returned values.

TABLE 6-1. SDI-12 Command Codes

SDI12 Measurement Command Returned Values

M! 1) Stage in meters or feet

2) Distance in meters or feet

3) Error Code (see Section 7)

6.1.1 Example Program

‘CR1000 Series Datalogger

‘Declare the variable for the water level measurement

Public CS475(3)

‘Rename the variable names

Alias CS475(1)=Stage

Alias CS475(2)=Distance

Alias CS475(3)=Error_Code

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Campbell CS475 Specifiche Pagina 17