Vaisala WMT700 - Manual (Page 169)

Chapter 5 _________________________________________________________________ Operation
SDI-12 Commands
Table 54 below lists the available commands for operating
WMT700 with SDI-12 profile.
NOTE You can only use COM2 serial port for sending commands and receiving
data messages with the SDI-12 profile.
Table 54 SDI-12 Commands
Command Description
?!
Queries WMT700 for its address
a! Ensures that WMT700 is responding
aI! Queries WMT700 for its SDI-12 compatibility level, model number, and
firmware version number
aAb! Changes WMT700 address
aC! Starts concurrent measurement
aCC! Starts concurrent measurement with CRC calculation
aD0! Fetches instant data from WMT700
aM! Starts measurement
aMC! Starts measurement with CRC calculation
aV! Starts verification
where
a = Single-digit WMT700 address that corresponds to the first
character of the address value
! = Terminates the command
NOTE The following SDI-12 commands cannot be used with WMT700:
Measurement Unit Change Command aXUx!, Heater Control Command
aXHx!, Check Current Sub mode aX?!, Place Sensor in Sub mode B
Command aXQx;c.c;n;yyyy!, Reset the Sensor to Sub mode A
Command aXS!, Check Current Measurement Unit Command aX*!,
aR0! Continuous Measurement.
For a list of configuration commands for WMT700, see Appendix A,
Complete Command Set for WMT700, on page 195.
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