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???
10/06/05 15:30
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#102034 - Full-duplex, half-duplex
Responding to: ???'s previous message
Ruben said:
connect a rs232 plug to an existing rs485 loop

In this case you must also adapt the protocol of sending and recieving, as no two senders are allowed to send on a half-duplex RS485 loop at the same time. Then you can use LT1785, for instance, in combination with a RS-232 transciever.

or exchange the rs232 transmission loop to a rs485

In this case you can use full-duplex operation mode, with the help of LT1791 in combination with RS-232 transciever at both ends. You just can have two independent loops, one for RXD line, the other for TXD line.

Kai

List of 11 messages in thread
TopicAuthorDate
rs232- rs485            01/01/70 00:00      
   B&B Electronics            01/01/70 00:00      
   More details needed            01/01/70 00:00      
      both            01/01/70 00:00      
         already answered            01/01/70 00:00      
         Full-duplex, half-duplex            01/01/70 00:00      
            that would be Rs-422            01/01/70 00:00      
   rs232-rs485            01/01/70 00:00      
   RS232 -> RS485            01/01/70 00:00      
      the 75176 is an old workhorse and work w            01/01/70 00:00      
         LT1785 is such an equivalent            01/01/70 00:00      

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