Identification – Campbell Scientific Sentek EnviroSCAN EasyAG SDI-12 Manual v 3.4 User Manual

Page 19

EnviroSMART & EasyAG SDI-12 Probe Manual

Page 14

The response indicates that 16 salinity depth values will be available immediately. The controlling device

will then issue Send Data commands (aDn!) to read the values.

Command

Response

aD0!

a+010.0000+020.0000+030.0000+040.0000+050.0000
+060.0000+070.0000+080.0000

aD1!

a+090.0000+100.0000+110.0000+120.0000+130.0000
+140.0000+150.0000+160.0000

Note: The EnviroSMART and EasyAG SDI-12 probe interface will not issue a service request for this

command.

Note: Refer to notes on Start Measurement (aM! or aMn!) command above.

Identification

The EnviroSMART and EasyAG SDI-12 probe interface will respond with a string of the following

format when sent the Send Identification command (aI!):

allccccccccmmmmmmvvvxxxxxxxxxxxx

Example:

012SENTEK XPI 103C42238000000

where:

The sensor address

SDI-12 version number, version 1.2

SENTEK

Company name

XPI

Model name (XPI for EnviroSMART, IPI for EasyAG)

103

Model version, version 1.0.3

C42238000000

Serial number

Note: The EnviroSMART and EasyAG SDI-12 probe interface firmware version consists of a

major/minor/sub-minor number. Since SDI-12 allocates only three characters, when any number

exceeds 9, the characters “A” to “Z”, then “a” to “z” is used. If the number exceeds 61 an asterisk (*) is

shown.

The EnviroSMART and EasyAG SDI-12 probe interface stores a 64-bit serial number. The Intelligent

Probe Configuration Utility will report all 64 bits as a hexadecimal number. The first two digits (8 bits)

of this serial number are always “10”, and the last two digits (8 bits) are a Cyclic Redundancy Check

(CRC). The serial number reported via SDI-12 omits the first and last 8 bits, providing the remaining 48

bits as the serial number.

The serial number for the above example is:

10C4223800000097 As reported by Intelligent Probe Configuration Utility

C42238000000

As reported by SDI-12

C42238

As shown on the SDI-12 probe interface Serial No.