I did comunication between several devices on modbus rtu using in RPI usb/rs232, so in confuguration codesys i used ttyUSB0,
now I would like to use port built in RPI . How do it ? In configuration fileCODESYS I use ttyAMA0 but it is not work.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I did comunication between several devices on modbus rtu using in RPI usb/rs232, so in confuguration codesys i used ttyUSB0,
now I would like to use port built in RPI . How do it ? In configuration fileCODESYS I use ttyAMA0 but it is not work.