Communications Setup and Operation
Teledyne API – Model T300/T300M CO Analyzer
150
6.7.2.4.
SETTING THE HESSEN PROTOCOL RESPONSE MODE
The Teledyne API’s implementation of Hessen Protocol allows the user to choose one of
several different modes of response for the analyzer.
Table 6-5: Teledyne API’s Hessen Protocol Response Modes
MODE ID
MODE DESCRIPTION
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.
BCC
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.
TEXT
Responses from the instrument are always delimited with <CR> at the beginning and the
end of the string, regardless of the command encoding.
To select a Hessen response mode, press:
SAMPLE
RANGE=50.0 PPM CO= XX.XX
<TST
TST> CAL
SETUP
SETUP X.X
HESSEN RESPONSE MODE:CMD
<SET
SET>
EDIT
EXIT
SETUP X.X
COMMUNICATIONS MENU
ID
HESN
COM1 COM2
EXIT
SETUP X.X
HESSEN VARIATION:TYPE1
<SET
SET>
EDIT
EXIT
SETUP X.X
PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK
MORE
EXIT
SETUP X.X
SECONDARY SETUP MENU
COMM
VARS
DIAG
EXIT
SETUP X.X
HESSEN RESPONSE MODE:CMD
BCC
TEXT CMD
ENTR
EXIT
EXIT
discards the new
setting.
ENTR
accepts the
new setting.
Use these buttons to
choose the Hessen
Response type.
Continue pressing
SET
until ...
06864D DCN7562
Summary of Contents for T300
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