Teledyne 6200T - Sulfides Analyzer - Manual (Page 154)

Communications Setup Model 6200T Total Sulfur Analyzer
Teledyne Analytical Instruments 154
6.6.2.4. Setting the Hessen Protocol Response Mode
Teledyne Analytical Instruments’s implementation of Hessen Protocol allows the user to
choose one of several different modes of response for the analyzer.
Table 6-6: 6200T 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, access the COMMUNICATIONS Menu (refer to
Figure 5-13), then press:
SETUP X.X HESSEN RESPONSE MODE :CMD
<SET SET> EDIT EXIT
SETUP X.X COMMUNICATIONS MENU
ID INET HESN COM1 COM2 EXIT
SETUP X.X HESSEN VARIATION: TYPE 1
SET> EDIT EXIT
SETUP X.X HESSEN RESPONSE MODE :CMD
BCC TEXT CMD ENTR EXIT
Press to
change
response
mode.
ENTR accepts the new
settings
EXIT ignores the new
settings
Figure 6-9: COMM – Select Hessen Protocol Response Mode
6.6.2.5. Hessen Protocol Gas ID
The 6200T analyzer is a single gas instrument that measures SO
2
. As such, its default
gas ID has already been set to 110. There is no need to change this setting.
6.6.2.6. Setting Hessen Protocol Status Flags
Teledyne Analytical Instruments’s implementation of Hessen protocols includes a set of
status bits that the instrument includes in responses to inform the host computer of its
condition. Each bit can be assigned to one operational and warning message flag. The
default settings for these bit/flags are listed in Table 6-7:
Table 6-7: Default Hessen Status Bit Assignments
STATUS FLAG NAME DEFAULT BIT ASSIGNMENT
WARNING FLAGS
SAMPLE FLOW WARNING 0001