PIC18F4520 with MODBUS Communication
This is the first project going to work with MODBUS Communication.
In this project I'm using PIC18F4520 as master device to set and read values from Slave.Slave will use MODBUS communication.
So please provide some guide lines to communicate between each other.
My doubts are.
1.Shall we connect TX and RX pin directly to DATA + and DATA -.?
2.If I use an RS232 to RS485 Convertor means,Shall I use MAX232 module between PIC Controller and convertor to communicate.?