Vaisala GMP231 - Manual (Page 35)

Chapter 4 ____________________________________________________ Vaisala Industrial Protocol
VAISALA ________________________________________________________________________ 33
Set Measurement Output Format
Use the serial line command FORM to change the measurement message
sent by the probe. You can freely define the output message to include
the desired parameters, formatting options, text strings, and additional
fields.
FORM [modifier string]
where
modifier string = String of parameters and modifiers that defines the
output format, length 1 ... 150 characters.
See Table 9 and Table 10 below. Maximum length
may be shorter when text strings are used.
You can return to the default format using the "FORM /" command.
Table 9 FORM Command Parameters
Measured Parameter Abbreviation in FORM Command
Carbon dioxide in ppm CO2
Carbon dioxide in percent CO2%
Currently used temperature
compensation value TCOMP
Currently used pressure
compensation value PCOMP
Currently used oxygen concentration
compensation value O2COMP
Currently used relative humidity
compensation value RHCOMP
Table 10
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 Probe address (0 ... 254)
SN Probe serial number
TIME Cumulative operating hours of the probe.
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
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