User Guide

User Guide
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5.2 SDI-12 Commands
Query the device address
Request
?!
? - Address wildcard
! - Instruction terminator
Response
a<CR><LF>
a - Address
<CR><LF> - End of the response
Example
Request：?!
Response：0<CR><LF>
The sensor at address '0'
responded to the query
Query the device status
Request
a!
a - Address
! - Instruction terminator
Response
a<CR><LF>
a - Address
<CR><LF> - End of the response
Example
Request：0!
Response：0<CR><LF>
Address '0' of device online
Query the device information
Request
aI!
a - Address
I – Identification
! - Instruction terminator
Response
aIIccccccccmmmmmmvvvxxx . . . xxx<CR><LF>
a - Address
II - 2 characters, SDI-12 protocol
version, for example 14 represents
v1.4
cccccccc - 8 characters, company
name or product name
mmmmmm - 6 characters, sensor
type
vvv - 3 characters, software version
xxx . . . xx - Optional, up to 13
characters, can be used to send
serial numbers, or other
information
<CR><LF> - End of the response
Example
Request：0I!
Response：014SENSECAPORCHSx1.0004A0040THPL
0I! - Command
0 - Address
14 – Hardware version 1.4
SENSECAP – Product brand
ORCHSx -Product model
1.0 – Software version 1.0