In the past couple days was trying to get PACA to send serial over to Somfy sonesse rs485 motors. Read a lot on the forum but still cant get it right. Hex string works fine from Eltima seral port software. Can someone have a look at my code and see if I get it right. My serial232 to 485 converter flashes but nothing happening. fc 70 fd 01 00 00 ef de f9 fe 00 ff 00 07 2d up fd 73 fd 01 00 00 ef de f9 00 05 34 04 stop fc 70 fd 01 00 00 ef de f9 ff 00 ff 00 07 2e DOWN PACA CODE Initialisation OpenSerial(1, 1, 4800, 8, 1, 0, 1); up once (GetLightingState("17_up") = ON) then begin WriteSerial(1, '#$fc##$fd#</body>#</body>#</body>#$ef#$de#$f9#$fe#</body>#$ff#</body>##d'); end; stop once (GetLightingState("18_stop") = OFF) then begin WriteSerial'#$fd##$fd#</body>#</body>#</body>#$ef#$de#$f9#</body>###'); end; down once (GetLightingState("19_down") = OFF) then begin WriteSerial(1, '#$fc##$fd#</body>#</body>#</body>#$ef#$de#$f9#$ff#</body>#$ff#</body>##e'); Any help will be much appreciated. George