Table 4-35: T200H/M Hessen Protocol Response Modes - Teledyne T200H User Manual

Teledyne API - Model T200H/T200M Operation Manual
4.15.4.3. Selecting a Hessen Protocol Type
SAMPLE A1:NXCNC1=100PPM
< TST TST > CAL
SETUP X.X PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK
SECONDARY SETUP MENU
SETUP X.X
COMM VARS DIAG ALRM
SETUP X.X COMMUNICATIONS MENU
ID HESN COM1 COM2
EXIT
Note
4.15.4.4. Setting the Hessen Protocol Response Mode
MODE ID
CMD 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>
BCC
(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,
TEXT
regardless of the command encoding.
07270D DCN7141
Currently there are two version of Hessen Protocol in use. The original implementation,
referred to as TYPE 1, and a more recently released version, TYPE 2 that has more
flexibility when operating with instruments that can measure more than one type of gas.
For more specific information about the difference between TYPE 1and TYPE 2
download the Manual Addendum for Hessen Protocol from the Teledyne API' web site:
http://www.teledyne-api.com/manuals/index.asp .
To select a Hessen Protocol Type press:
NOX=XXX.X
SETUP
SETUP X.
MORE EXIT
SETUP X.X
TYPE1 TYPE 2
ENTR EXIT
EXIT
SETUP X.X
PREV NEXT
While Hessen Protocol Mode can be activated independently for COM1 and
COM2, the TYPE selection affects both ports.
The Teledyne API' implementation of Hessen Protocol allows the user to choose one of
several different modes of response for the analyzer.

Table 4-35: T200H/M Hessen Protocol Response Modes

HESSEN VARIATION: TYPE 1
SET> EDIT
HESSEN VARIATION: TYPE 1
HESSEN VARIATION: TYPE 2
OFF
MODE DESCRIPTION
Operating Instructions
EXIT
ENTR accepts the new
settings
EXIT ignores the new
settings
Press to change
protocol type.
ENTR EXIT
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