Plz plz help me

[installer2001]

hello Genius guys...

Plz help me in solving ma problem....
Sir i want to increase my transmission length......

For that i have used Rs-232 to Rs485 converter...Plz see attached picture.....And help me as soon as possible....

 

[blueroomelectronics]

A better subject might get you help faster.
Try Google too.
FAQ - How Do I Make RS-485 Connections? - B&B Electronics