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Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer
Teledyne Analytical Instruments 154
6.15.4.2. Hessen com Port Configuration
Hessen protocol requires the communication parameters of the GFC 7000TA’s com ports to be set
differently than the standard configuration as shown in the table below.
Table 6-29: RS-232 Communication Parameters for Hessen Protocol
Parameter Standard Hessen
Data Bits 8 7
Stop Bits 1 2
Parity None Even
Duplex Full Half
To change the rest of the com port parameters. See Section 6.11.5.
To change the baud rate of the GFC 7000TA’s com ports, See Section 6.11.8.
NOTE
Make sure that the communication parameters of the host computer are also
properly set.
Also, the instrument software has a 200 ms. Latency before it responds to
commands issued by the host computer. This latency should present no problems,
but you should be aware of it and not issue commands to the instrument too
frequently.