7. RS232 Interface
Projekt Elektronik
MESS - UND REGELUNGSTECHNIK GMBH
page 21
7.3
Commands
The FM 3002 has a simple command structure consisting of the command name followed by one
optional parameter. Command and parameter are separated by a space. Supplementary whitespaces
will be tolerated. Every command line is finished with a newline character (LF/10d/0Ah). A preceding
carriage-return character (CR/13d/0Ch) will be tolerated too.
All commands (but not the parameters) may abbreviated as long as they are distinguishable. The
commands are not case-sensitive.
typographic convention of the examples:
normal script
- output FM 3002
bold script
- input user
[ ]
- optional-brackets; brackets are not entered
7.4
Relative
command:
relative [reference]
without parameter:
switches to relative measurement and uses the actual measured
value as reference (equal to pressing the “Rel” key)
with parameter:
switches to relative measurement and uses the given number as
reference (interpreted as a multiple of 0.1µT)
parameter:
- 25000000 reference 25000000
example:
>
rel
display is relative, reference =
>
1234.5 µT
>
rel 12345678
display is relative, reference =
>
1234567.8 µT
7.5
Absolute
command:
absolute
without parameter:
switches to absolute measurement (equal to pressing the “Abs”
key)
example:
>
abs
display is absolute
>