B-1
APPENDIX B
Firmware Commands
The firmware commands are 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 (MISCELLANEOUS) command 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 Commands
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
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