@ [WattsThat]
Yes My Modbus Slave Address is 10, 8N1.
I have marge the code which took from two different site and edited. Because I need to send the read data to PC which read by Arduino from slave. As I know Arduino Uno has only one hardware serial, I will use it by USB or pin 0,1.
Thats why I am trying to use soft serial port on Pin10, 11 and DE and RE on Pin 2,3.
Please see my code below: