S7-200 PPI cable

[saad alsamarraee 0]

Dears,
I got a circuit diagram from the net to implement S7-200 PPI cable adapter based on RS232 PC port as shown in attached image.
Please advise me if this design is trusted or not !..
Waiting for kind help..
                                           Best regards
 

Edited 27 Jul 2021 by saad alsamarraee

[dekor 12]

Hi,

Dont follow this drawing. 

You have to create an RS232-RS485 converter.

I did also RS232-RS485 converter and it works for S7-200. 

[saad alsamarraee 0]

Thank you very much dear Mr.Sparky for kind reply ,
If you don't mind, send me the correct circuit diagram you depended please .
Thank you again.. 
 

[dekor 12]

Hi again, 

No need to work that much. 

You can buy even much cheaper than you build yourself.

One more think: No USB to RS485, because you need to select Com port as communication path on Microwin.

Selection USB is for genuine Siemens adapter,.