
ZENO
®
-3200 USER MANUAL
Coastal Environmental Systems (206) 682-6048
Page 77
The following table summarizes the available settings for each communications port.
Communication Settings
Line Item
No.
Quantity Available Values
1 COM1 Baud Rate
2 COM2 Baud Rate
3 COM3 Baud Rate
300, 600, 1200, 2400, 4800, 9600, 19200
4 COM1 Port Type RS232, RS232H, RADIO, TW-RADIO
5 COM2 Port Type RS232, RS232H, RS485, GOES, CGOES, ARGOS
6 COM3 Port Type
RS232, RS232H, RS485, RS422
The different port types are summarized in the following table:
Port Type Directionality Mode Brief Description
RS232
83
Bi-directional Full-duplex Common computer interface, up to 50 feet
of cable.
RS232H Bi-directional Half-duplex Required for devices that don't support
full-duplex communication.
RS485
84
Bi-directional Half-duplex Common interface when more than two
nodes are required, up to 4000 feet of
cable.
RS422
85
Bi-directional Full-duplex Used for greater distance than RS232, up
to 4000 feet of cable.
RADIO Unidirectional N/A Allows short wireless data transmissions
for several miles.
TW-RADIO Bi-directional Half-duplex Allows full wireless communication for
several miles.
GOES Unidirectional N/A Used with Telonics TGT-1 GOES
transmitter.
CGOES Unidirectional N/A Used with Campbell Scientific SAT HAT
HDR GOES transmitter.
ARGOS Unidirectional N/A Used with Telonics ST-5 & ST-13
ARGOS transmitters.
The mode “full-duplex” means there is uninterrupted, bi-directional communication. Half-duplex means
there is bi-directional communication, but only one device can transmit at one time.
When using half-duplex, bi-directional communication, you cannot break into a data stream being sent by
the ZENO
®
-3200. for example:
In half-duplex mode, data output from the Test Menu quits after 5 screens.
83
As defined by Engineering Department, Electronic Industries Association, ANSI/EIA-232-D-1986. Electronic
Industries Association: Washington D.C, 1987.
84
As defined by Engineering Department, Electronic Industries Association, EIA-485. Electronic Industries
Association: Washington D.C, 1983.
85
As defined by Engineering Department, Electronic Industries Association, EIA-422-A. Electronic Industries
Association: Washington D.C, 1978.
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