B-1
A P P E N D I X B
Firmware Commands
The firmware commands are be divided into the following categories:
READ Commands
SET Commands
MISC (MISCELLANEOUS) Commands
HELP Commands
READ commands are used to read parameter from the instrument (flow
rates, temperatures, etc.). READ commands can be identified by a
leading "R".
SET commands set an internal parameter to the value(s) supplied with
the command. Supplied parameters are always delimited by a comma.
SET commands can be identified by a leading "S". The instrument will
reply to all set commands with the string “OK” <CR>. Also, if no
parameter is supplied, the command will return the current set value.
MISC (MISCLLANEOUS) commands will be used for calibration and
SMPS mostly.
HELP commands. Type “HELP” in a HyperTerminal window or a similar
program and it will explain how to use it. All the command descriptions
that follow can be obtained using the help command.
The instrument will reply with a serial string of "ERROR", if a command
was not understood.
READ C o m mands
RFV Read the firmware version number
Returns: A string in the format of X.X.X where X are
numbers from 0–9
Example: 2.3.1
RSF Read the aerosol flow rate in cc/min
Returns: A floating point number from 0.0 to 9999.9
Example: 1000
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