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RS-232-to-RS-485 Communications Multiplexer
The multiplexer
provides eight RS-485 communications ports using one RS-232-to-RS-485
conversion circuit. A 68HC908QY1 controls eight analog switches
and builds connections between a real RS-485 communications
port and any one of the eight virtual ports. You can control
the target channel manually, let the MCU do it automatically,
or use a specially designed program running on the PC. An
LCD displays the statuses.
Hua Zhou
China
foxjhou@130-165.com
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