Teledyne GFC-7001T - Trace CO Analyzer - Manual (Page 143)

CommunicationsTeledyne API – Model T300/T300M CO Analyzer
Teledyne Analytical Instruments 143
6.3. RS-232
The RS232 and COM2 communications (COMM) ports operate on the RS-232 protocol
(default configuration). Possible configurations for these two COMM ports are
summarized as follows:
 RS232 port can also be configured to operate in single or RS-232 Multidrop mode
(Option 62); refer to Sections 3.3.1.9 and 5.7.1.
 COM2 port can be left in its default configuration for standard RS-232 operation
including multidrop, or it can be reconfigured for half-duplex RS-485 operation
(please contact the factory for this configuration).
Note that when the rear panel COM2 port is in use, except for multidrop
communication, the rear panel USB port cannot be used. (Alternatively, when the USB
port is enabled, COM2 port cannot be used except for multidrop).
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 TAI Sales
for more information on CAS systems.
To assist in properly connecting the serial ports to either a computer or a modem, there
are activity indicators just above the RS-232 port. Once a cable is connected between
the analyzer and a computer or modem, both the red and green LEDs should be on.
 If the lights are not lit, use small switch on the rear panel to switch it between DTE
and DCE modes.
 If both LEDs are still not illuminated, make sure the cable properly constructed.
To configure the analyzer’s communication ports, use the SETUP>MORE>COMM
menu. Refer to Section 5.7.3 for initial setup.
6.4. RS-485 (OPTION)
The COM2 port of the instrument’s rear panel is set up for RS-232 communication but
can be reconfigured for RS-485 communication. Contact Customer Service. If this
option was elected at the time of purchase, the rear panel was preconfigured at the
factory. Choosing this option disallows use of the USB port.
6.5. ETHERNET
When using the Ethernet interface, the analyzer can be connected to any standard
10BaseT or 100BaseT Ethernet network via low-cost network hubs, switches or routers.
The interface operates as a standard TCP/IP device on port 3000. This allows a remote
computer to connect through the network to the analyzer using APICOM, terminal
emulators or other programs.
The Ethernet cable connector on the rear panel has two LEDs indicating the Ethernet’s
current operating status.
Table 6-2: Ethernet Status Indicators
LED FUNCTION
amber (link) On when connection to the LAN is valid.
green (activity Flickers during any activity on the LAN.