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All the information about tachograph data:
https://wiki.teltonika.lt/view/FMB630_Tachograph_DataTCP LINK mode (TCP ASCII) works with devices that has RS232 connection (FMB640/FM6300/FMB630/FMB125) More information on our wiki page: https://wiki.teltonika.lt/view/FM6300_RS-232_and_RS-485#RS-232_modes