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From RS-485 to RS-232+isis disgn

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xxtigerxx

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From RS-485 to RS-232

I want to send and receive data from my PC from a network RS-485
Do you have any cicruit?

THX
 

Re: From RS-485 to RS-232

To convert RS485 to digital use MAX485, and digital to RS232 use MAX232.
 
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    XoDoK

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From RS-485 to RS-232

see your schematics in this link :
**broken link removed**
more info :
**broken link removed**
**broken link removed**
 

Re: From RS-485 to RS-232

If you make some assumptions and use some tricks the RS-232 to RS-485 half-duplex (2-wire) converter can be quite simple (see attached circuit) ..

Assumption1: Most of Laptop and PC COMs will happily accept 0-5V level on Rx pin ..
Trick1: Steal power from serial port ..

The resultant circuit is self-powered, will work with any baud rate >115kbs and doesn't need direction control (automatically switches from transmission to reception) ..
There are, as usual, small drawbacks .. but who cares about them if circuit works OK ..

Have fun ..

Regards,
IanP
 

From RS-485 to RS-232

This link 's very good. U can refer:
**broken link removed**
 

Re: From RS-485 to RS-232

Dear IanP
can i use this converter with s7-200 PLC

Best Regards

MedTronic
 

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