Vaisala WMT700 - Manual (Page 175)

Chapter 5 _________________________________________________________________ Operation
The response is the following:
allccccccccmmmmmmvvvxxx . . . xxx<CR><LF>
where
a = Single-digit WMT700 address that corresponds to the
first character of the address value
11 = SDI-12 version number, indicating SDI-12 version
compatibility; for example, version 1.1 is encoded as 11
cccccccc = 8-character vendor identification Vaisala_
mmmmmm = 6 characters specifying the model number of WMT700
vvv = 3 characters specifying the firmware version 604
xxx ... xxx = Optional field, up to 13 characters, used for a serial
number or other specific WMT700 information that is
not relevant for operation of the data recorder (not used)
<CR><LF> = Terminates the response
aM! — Start Measurement
This command starts measurement. WMT700 does not return
measurement data after this command. It sends a response that
indicates when the measurement result can be retrieved using the
aD0! command and the number of parameters.
aM!
where
a = Single-digit WMT700 address that corresponds to the
first character of the address value
M = Start measurement command
! = Terminates the command
VAISALA _______________________________________________________________________ 173