Hello friends,
i want to control mach3 totally from external switches so obviously, the inputs and outputs of 2 ports are not enough. The one solution is modbus i guess.
I know a little bit of uC programming and use of their i/O and want to know where should i start with mach3 modbus. I want to know how it works and what are the limitations of using it. Can just two pins on the port can create a way between 20 switches and mach3?
i don't have any prior knowledge about serial communication. I don't even know if there is any difference between modbus and serial com.
Any help from there?
regards.
jasminder singh