RS232 and RS485 Serial BUS

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bctang

Joined Sep 5, 2004
26
Hi,

I have few questions.
- According the MAX485 Table Function, in what condition we should set the /RE=1 and DE=0?

- May i know RS232 can be connect many nodes in serial bus as Serial BUS Diagram shown. If yes, what's the different between RS232 and RS485 advantage and disadvantage, ex: data transfer speed, limited node, limited length and so on..

- If the design is interface with the PC. Is it all the node on the serial bus (no matter RS232 or RS485) will be the Slave always in the listening mode?

Thank You
 

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serialeasy

Joined Feb 20, 2008
2
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