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3.4.2.2 HESSEN SETTINGS CONFIGURATION
Hessen configuration includes settings for alarms, version, response mode, status flags
and gas list. Locate the alarms in the Hessen Settings list (Setup>Comm>Hessen>Hessen
Settings) and edit as desired.
H
V
ESSEN
For the Hessen Variation setting, there are two versions.
•
TYPE 1 is the original implementation.
•
TYPE 2 has more flexibility when operating with instruments that can measure more than
one type of gas. For more specific information about the difference between the two
versions, download the Manual Addendum for Hessen Protocol from the Teledyne API's
web site: http://www.teledyne-api.com/manuals/.
H
P
ESSEN
Set the response mode under Hessen Response Mode, referring to Table 3-2 for
descriptions.
Table 3-2. Teledyne API's Hessen Protocol Response Modes
MODE ID
CMD
BCC
TEXT
H
S
ESSEN
Locate the various status flags in the Hessen Settings list and edit as needed. They are
listed by status flag name with their default bit assignments. (Those with unassigned flags
are listed as "0x0000").
•
The status bits are included in the instrument's responses to inform the host computer of its
condition. Each bit can be assigned to one operational and warning message flag.
•
It is possible to assign more than one flag to the same Hessen status bit. This allows the
grouping of similar flags, such as all temperature warnings, under the same status bit.
Assigning conflicting flags to the same bit will cause each status bit to be triggered if any of
•
the assigned flags is active.
083730400A DCN8130
frequently.
ARIATION
R
M
ROTOCOL
ESPONSE
ODE
This is the default setting. Reponses from the instrument are encoded as the
traditional command format. Style and format of responses depend on exact
coding of the initiating command.
Responses from the instrument are always delimited with <STX> (at the
beginning of the response, <ETX> (at the end of the response followed by a 2
digit Block Check Code (checksum), regardless of the command encoding.
Responses from the instrument are always delimited with <CR> at the beginning
and the end of the string, regardless of the command encoding.
F
TATUS
LAGS
Teledyne API – Model T400 O
MODE DESCRIPTION
Analyzer
3
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