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Operating Instructions Model GFC7000TA Carbon Dioxide Analyzer
Teledyne Analytical Instruments 101
6.11. SETUP MORE COMM: Using the Analyzer’s
Communication Ports
The GFC 7000TA is equipped with an Ethernet port, a USB port and two serial communication (COMM)
ports located on the rear panel (Figure 3-2). Both com ports operate similarly and give the user the ability
to communicate with, issue commands to, and receive data from the analyzer through an external
computer system or terminal.
By default, both com ports operate on the RS-232 protocol.
The RS232 port (used as COM1) can also be configured to operate in single or RS-232 multidrop
mode (option 62; See Section 5.5.2 and 6.11.7).
The COM2 port can be configured for standard RS-232 operation or half-duplex RS-485
communication (For RS-485 communication, please contact the factory).
A code-activated switch (CAS), can also be used on either port to connect typically between 2 and 16
send/receive instruments (host computer(s) printers, data loggers, analyzers, monitors, calibrators, etc.)
into one communications hub. Contact Teledyne Instruments sales for more information on CAS
systems.
6.11.1. Analyzer ID
Each type of Teledyne Instruments analyzer is configured with a default ID code. The default ID code for
all GFC 7000TA analyzers is 360. The ID number is only important if more than one analyzer is
connected to the same communications channel such as when several analyzers are on the same
Ethernet LAN (See Section 6.11.6); in a RS-232 multidrop chain (See Section 6.11.7) or operating over a
RS-485 network. If two analyzers of the same model type are used on one channel, the ID codes of one
or both of the instruments needs to be changed.
To edit the instrument’s ID code, press:
SETUP X.X PRIMARY SETUP MENU
CFG DAS RNGE PASS CLK MORE EXIT
SETUP X.X COMMUNICATIONS MENU
ID INET COM1 EXIT
SETUP X. MACHINE ID:
3
6
0 ID
0 2 0 0 ENTR EXIT
Toggle these keys to
cycle through the
available character set:
0-9
ENTR accepts the new
settings
EXIT ignores the new
settings
SAMPLE* RANGE = 500.000 PPM CO2 =X.XXX
< TST TST > CAL SETUP
The ID number is only important if more than one analyzer is connected to the same communications
channel (e.g., a multi-drop setup). Different models of Teledyne Instruments analyzers have different
default ID numbers, but if two analyzers of the same model type are used on one channel (for example,
two GFC 7000TA’s), the ID of one instrument needs to be changed.