Vaisala DMT143 - Manual (Page 50)

USER'S GUIDE ____________________________________________________________________
48 ___________________________________________________________________ M211435EN-E
Table 8 FORM Command Parameters
Measured Parameter Abbreviation in FORM Command
Dewpoint/frost point temperature Tdf
Dewpoint/frost point temperature,
converted to atmospheric pressure Tdfa
ppm moisture, by volume H20
Relative humidity* RH
* RH is available only if transmitter has been ordered from Vaisala with a relative
humidity output on the analog channel.
Table 9 FORM Command Modifiers
Modifier Description
x.y Length modifier (number of digits and decimal places)
#t Tabulator
#r Carriage-return
#n Line feed
"" String constant, length 1 ... 15 characters
#xxx ASCII code value (decimal) of a special character;
for example, #027 for ESC
ADDR Transmitter address (0 ... 255)
ERR Currently active transmitter errors in a four bit field:
bit0bit1bit2bit3bit4
bit0 T MEAS error
bit1 N/A
bit2 Fmeas error
bit3 Flash csum error
SN Transmitter serial number
STAT Transmitter status in a one character field:
h – sensor heating active
H – Purge active
A – Autocalibration active
TIME Time since transmitter was started or reset
Ux Shows the name of the measurement unit using “x” number
of characters. For example, U3 shows the name of the
measurement unit with three characters
CS2 Modulus-256 checksum of message sent so far, ASCII
encoded hexadecimal notation
CS4 Modulus-65536 checksum of message sent so far, ASCII
encoded hexadecimal notation
CSX NMEA xor-checksum of message sent so far, ASCII encoded
hexadecimal notation