Synel SY-760, Руководство пользователя

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Host Computer Interfacing
Most computers use DTE type connectors on their RS-232 ports. The terminal is
equipped with an RJ45 (telephone jack) connector. Therefore, you will need a connection
box intermediating the terminal and the host.
There are a number of different standard communication channels.
The data collection terminal can be connected to the host computer using either an RS-232
or an RS-485 connection with an asynchronous serial port.
RS-232 is used for a single device with a point to point connection, for distances up to 50
meters (160 ft).
RS-232 is the communication standard used by nearly all PCs and modems. The cabling
distance is limited to 50 meters (160 ft) and only one terminal may be connected to the same
COM port.
The RS-485 standard extends the potential cabling distance to 1,000 meters (3,280 feet).
Using 9600 baud enables multi-COM port connections. It uses only two communication
wires. The SY-65 communication adapter converts RS-232 to RS-485.