SDI-12 extended commands

Enter the SDI-12 extended commands in SDI-12 extended commands using the transparent mode while the computer is communicating with the data logger through a terminal emulator program. Transparent mode can be accessed through Campbell Scientific Device Configuration Utility software or other terminal emulator programs. Data logger keyboards and displays cannot be used. Refer to SDI-12 transparent mode for more information.

SDI-12 extended commands
SDI-12 command¹	Values returned or function
`XRDT!`	Reads sensor date and time.
a`XWDT+`MM/DD/YYYY hh:mm:ss`!`	Writes date and time.
a`XWARA!`	Extended write adjusted rainfall accumulator command; resets the total adjusted rain accumulator to 0.00. Typically this command is issued on the start of the water year, often October 1 or January 1.
a`XWA+`xx.xx`!` (where xx.xx = current rain value)	Resets the total adjusted rain to a current value and returns the number of values. Follow this command with the a`D0!` command to get the new adjusted rain. Used when replacing the RainVue-series midway through a water year.
a`XWRESET!`	Resets all accumulators.
a`XWD!`	Resets RTC or 24 hour tick counter to midnight. This command is a simple way for data loggers to sync the time clock without having to format the SDI-12 command.
a`XWTILT!`	Zero tilt sensor (XWTILT) status; returns a status flag indicating the success of the leveling process. s = 0 Success s = 1 Error (cannot zero the sensor) This command is a simple way for data loggers to sync the time clock without having to format the SDI-12 command.
a`XRTILT!`	Reads the tilt angle (degrees) of the tilt sensor. When this command is issued right after the sensor is zeroed, it should return 0.00 degrees, verifying the RainVue-series is level.
a`XTEST!`	Returns two lines of header information, then returns updated data at every tip and every 2 seconds or until a break is detected with each line terminated with a <CR><LF>. Command is only intended for testing and debugging the sensor; refer to Calibration validation for detailed information about using this command.
a`XHELP!`	Lists the standard measurement and extended commands supported by the RainVue-series. Command is only intended for testing and debugging the sensor.
a`XRCAL!`	Returns bucket calibration setting.
a`XWCAL`+x.xxxx`!` (where x.xxxx =calibration factor)	Writes bucket calibration setting; returns 01 if it worked correctly.
a`XLOADOS`rrrrrrainvue_nnn.a43`!` where rrrrr= baud rate rainvue_nnn.a43 = OS name	Sends the new OS to the sensor; refer to Updating the operating system using the XLOADOS SDI-12 instruction.
¹a is the sensor address.