FTS DigiTemp - 2.4 SDI Data commands

DigiTemp User Manual Chapter 2 SDI Commands
page 10
2.3.1 Address Query
This command requests the address of the SDI sensor.
String
Note
Cmd
?!
request the (single) device on this bus to report its address
Resp
0
the device is configured for address 0
only one SDI device should be connected to the bus when
using this command; problems arise when several devices
respond on the same bus
2.3.2 Acknowledge Active
This command queries whether a sensor is present on the SDI bus at the specified address.
String
Note
Cmd
0!
request the device at address 0 to confirm it is active
Resp
0
a device is present at address 0
2.3.3 Change Address
This command changes a sensor’s SDI address.
String
Note
Cmd
0A3!
change the address of the device at SDI address 0 to 3
Resp
3
response confirms change
2.3.4 Send Identification
This command requests detailed identification information from the addressed sensor.
String
Note
Cmd
3I!
Resp
313FTS-----DgiTmp-v134567
3 device SDI address
13 compatible with SDI-12 version 1.3
FTS manufacturer’s identifier
DgiTmp sensor model
-v1 version 1 of sensor firmware
34567 sensor serial number
2.4 SDI Data commands
SDI data commands request data from the sensor.