The design of RS232 to RS485 converter

[electronproton]

can someone tell me the design of RS232 to RS485 converter? thx

 

[Help]

Re: Rs232 to 485

Hi,


Hope this topic usefull for you.

Good Luck,
Help

 

[mucko]

Rs232 to 485

use RTS and DTR pin to control RS485 strobe controls and RX-TX for data transmission

 

[blueroomelectronics]

Re: Rs232 to 485

Plenty of converters and schematics at https://www.rs485.com/

 

[Prabakaran]

Re: Rs232 to 485

This is the circuit For RS232 to RS485. Its working Correctly

 

[blueroomelectronics]

Re: Rs232 to 485

This is the circuit For RS232 to RS485. Its working Correctly

What circuit is that?

 

[electronproton]

Rs232 to 485

Thx all for your help..

 

[funnynypd]

Rs232 to 485

for 2-wire 485 network, there are non-echo designs and echo designs.

The echo can be used to verify if the signal send out correctly. If not required, just ignore the data received when transmitting. Some network design require an echo for bus arbitration, some network don't require this feature.

We got one design (with echo) on production: RS485/SAE J1708 to RS232 converter.
Here is a picture illustrated SMD components:

 

[blueroomelectronics]

Rs232 to 485

Your boards look good, what's the pushbutton for?