Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 58)

Getting StartedTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments 58
Analyzer Analyzer Analyzer Last Analyzer
Female DB9
Male DB9
RS-232
COM2
RS-232
COM2
RS-232
COM2
RS-232
COM2
Host
RS-232 port
Ensure jumper is
installed between
JP2 pins 21

22 in
last instrument of
multidrop chain.
Figure 3-17: RS-232-Multidrop PCA Host / Analyzer Interconnect Diagram
7. BEFORE communicating from the host, power on the instruments and check
that the Machine ID code is unique for each (Section 5.7.1).
a. In the SETUP Mode menu go to SETUP>MORE>COMM>ID. The default
ID is typically the model number or “0”.
b. to change the identification number, press the button below the digit to
be changed.
c. Press/select ENTER to accept the new ID for that instrument.
8. Next, in the SETUP>MORE>COMM>COM1 menu (do not use the COM2
menu for multidrop), edit the COM1 MODE parameter as follows:
press/select EDIT and set only QUIET MODE, COMPUTER MODE, and
MULTIDROP MODE to ON. Do not change any other settings.
9. Press/select ENTER to accept the changed settings, and ensure that COM1
MODE now shows 35.
10. Press/select SET> to go to the COM1 BAUD RATE menu and ensure it
reads the same for all instruments (edit as needed so that all instruments are
set at the same baud rate).
Note
The Instrument ID’s should not be duplicated.
The (communication) Host instrument can only address one instrument
at a time.
Note TAI recommends setting up the first link, between the Host and the first
analyzer, and testing it before setting up the rest of the chain.