'''CAN \ Tachograph''' are used to configure device when connection of CAN1 and CAN2 BUS lines are performed. <br>
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Teltonika recommendations: <br>
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* FMB640 CAN1 connected to vehicle's FMS(J1939) BUS line<br>
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* FMB640 CAN2 connected to vehicle's Tachograph - Instructions can be found on [[FMB640_and_Tachograph_Solution|FMB640 and Tachograph Solution]] wiki page;