INFICON Ecotec E3000 Multigas-Sniffer-Leak Detector Interface description - Manual (Page 16)

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3.2 Interface Commands
3.2.1 Command Format
In ASCII mode any command starts with « * (ASCII code 42 dec)» and is finished with the
end sign selected (e.g. CR). There is no differentiation between upper and lower case
(exception: gas names and names of I•Guide programs). A blank is required between the
command and the parameter, no other blanks are allowed (except names of I•Guide
programs).
There is a short and an extended form of the command. Either the short or the extended
command must be used, no other abbreviations are allowed. Command Words have to be
separated by a colon. A command can be composed of up to three words. Parameters
have to be separated by a comma.
Each command is answered with “ok” or “EXX” (in case of an error). For a list of all error
message see Operating Instructions of the Ecotec E3000. The transmission can be
cancelled with ESC (ASCII code 27dec), ^C (ASCII code 3 dec) or ^X (ASCII code 24 dec).
Some commands can be used as queries, some can be used to set menu parameter and
some can be used for both. A query is marked by a “? (ASCII code 63 dec)“ after the
command, for setting data the command has to be followed by the new value to be set.
Parameter can be Boolean or numerical:
Always use a point as the decimal marker. If a comma is used during numerical data entry,
the conversion of the number is cancelled at this point and only the integer part of the
number will be used.
Commands in brackets - as in *status[:CAL] - are optional commands and do not
necessarily need to be transmitted.
Boolean 0 / 1 or OFF / ON Or ENAble / DISAble

Numeric representation format: integer, real (15.6) or exponential (4.5E-7)

Format: [space] [sign] [ddd] [.] [ddd] [e[sign]ddd] (d: digit)
Table 10: Examples
Command Reply Content
*stat? (CR) MEAS (CR) status of the unit
*status? (CR) MEAS (CR) status of the unit
*read 1? (CR) 14.3 g/a (CR) leak rate gas 1 in chosen unit of measurement
*read 1:oz/yr? (CR) 2.876E-5 oz/yr (CR) leak rate gas 1 in different unit of measurement
*start (CR) OK (CR) start run-up
*gas:1:search? (CR) 90 (CR) query search level gas 1
*gas:1:search 75 (CR) OK (CR) set search level gas 1