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Communications Setup and Operation T400 Ozone Analyzer Operator’s Manual
134
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)
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 Teledyne
API Sales for more information on CAS systems.
To configure the analyzer’s communication ports, use the SETUP>MORE>COMM
menu.
6.4. RS-485 (OPTION)
As delivered from the factory, COM2 is configured for RS-232 communications. This
port can be reconfigured for operation as a non-isolated, half-duplex RS-485 port. To
configure RS-485, please contact the factory.
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 connector has two LEDs that are on the connector itself, indicating its
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.
The analyzer is shipped with DHCP enabled by default. This allows the instrument to be
connected to a network or router with a DHCP server. The instrument will automatically
be assigned an IP address by the DHCP server (Section 6.5.1). This configuration is
useful for qu
ickly getting an instrument up and running on a network. However, for
permanent Ethernet connections, a static IP address should be used. Section 6.5.1 below
details how to configure the instrume
nt with a static IP address.
06870C DCN6332