@scroggyg Hi, the SIT3088 is a "converter" from UART to RS-485. To write/read the RS-485, use the UART1 (TX:20, RX:21).
The setup below works, although I have to store the arrays first somehow, before setting them into my text box (top_box), as the text appears briefly and then disappears ...but I can see I am receiving OK.
I got the tab5 yesterday ...and RS-485 was the first thing I wanted to test it.
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