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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.
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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.