HEY GUYS, i need some example code of modbus rtu with 8051 controller
MODBUS is not specific to 8051 - or any other processor.
So any example should do.
http://modbus.org/ would seem the obvious place to start ...
In particular, http://modbus.org/tech.php
Also: https://www.freemodbus.org/
GitHub is a good place to search when looking for code examples ...
and there's always Google: www.lmgtfy.com
yeah i know sir, but actually i have some sensor code with 8051 controller. i want to use MODBUS RTU interface with RS485 in that sensor code so i said modbus code with 8051 controller. By the way i have MODBUS code in pic controller but i need this code in 8051 controller.
So just use that as your example, then!
Again, the MODBUS protocol remains the same whether you are using a PIC or an 8051 or anything else.
The only bit that's going to be different is the bit that directly talks to the 8051 UART hardware - but that bit has nothing to do with MODBUS.