I am setting up Nano 10 for programming via RS 485 to U485 USB converter.
Instructions show 120 ohm terminating resistor across RS 485+ and RS485- lines. Is this needed when U485 converter and Nano 10 are only devices on RS-485 lines?
In addition RS-485+ is pulled up to +5VDC by 1k resistor and RS-485- is pulled down to ground by 1k resistor are these both needed for only U485 and Nano 10 on RS-485 lines?
Also is there a Ladder+Basic programmer?s reference for the Nano 10 ?