Xylem 4015 SDI-12 TO ANALOG CONVERTER - Manual (Page 3)

The small ‘a’ denotes the device address.
Command Response
Acknowledge Active: Returns a response
acknowledging that the sensor unit is active. a! a
Send Identification: Returns SDI version,
company name, sensor model #, sensor version #. aI! a10highsierra_4015_00v_date_
Address Query: Returns the address for sensor.
Only one sensor may be on the buss for this query ?! a
Change Address: Changes the address of the
sensor unit. aAb! b
b is the new sensor address.
EXTENDED COMMANDS
(Unique to 4015) Command Response
Read Settings Status aXSTAT! Reads back all settings
Set Sensor Address to be monitored (or polled)
by 4015 aXADDRx! a SDI address = x
Set Sensor Parameter to be monitored (or polled)
by 4015 aXPARAn! a Parameter = n
Set Polling Time (seconds) or
(zero seconds = Listen Only) aXTIMEssss! a Poll Time = ssss (Listen
Only)
Set Zero Value Value to create zero output
level. nnn.dd is a floating point number. aXZEROnnn.dd
!
a Zero = nnn.dd
Set Full Scale Value Value to create full scale
output level.
nnn.dd is a floating point number. aXFULLnnn.dd! a Full Scale = nnn.dd
Set Output Format
aXOUT4-20!
aXOUT0-20!
aXOUT0-1!
a 4-20mA
a 0-20mA
a 0-1mA
Enable 4-20mA Alarm In 4-20mA mode, current
drops to 0mA if parameter is not found. aXALON! a 4-20 Alarm On
Disable 4-20mA Alarm No change in output is
Parameter is not found. aXALOF! a 4-20 Alarm Off
Set Output Value (0 to 4095) aXVALUnnnn! a DAC Value = nnnn
Read Sensor Now Causes 4015 to poll sensor aXREAD!