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Line 1: − SAE J1708 is a standard used for serial communications between ECUs on a heavy duty. The hardware utilized are RS-485 transceivers wired for open collector operation through the use of a pullup and pulldown of the separate data lines.+ − + − With FMC640, J1708 functionality is used to read vehicle's Fuel Level and Fuel consumption. + − − Because J1708 is not a CAN BUS protocol, FMC640 CAN1 and CAN2 lines cannot be used to read J1708 information. FMC640 has a special J1708 Port, which utilizes RJ9 4P4C connector. − − [[image:J1708.png]] − [[image:J1708_pinout.png]] <br> − − ==Software Configuration of FMC640 with J1708== − − Firmware version: 00.00.11 or above − Configurator version: 0.13.35.29297 or above − − J1708 configuration is done in FMS IO Tab. − − [[image:J1708_config.gif]] − − When J1708 is enabled as Fuel Level source, Fuel related data will be taken from J1708 line, FMS Fuel data will be ignored. − − ==Connection with Vehicle port== − − J1708 connector is not supported by all vehicles. Only VOLVO, RENAULT and American truck manufacturers implement J1708 connector. − − [[image:J1708_pinout1.png]] − − Trucks utilizes Deutsch 9-PIN connector, which is used to connect FMC640 to J1708. − − [[image:Deutsch_j1708.png]] − − {| − | [[File:Alert.png|left|link=|50px]] || <b>NOTE: Most of the Volvo trucks need an J1708 connection to be able to receive fuel level data</b> − |}
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{{Template:FMX640 and J1708
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[[Category:FMC640 Manual]]
[[Category:FMC640 Manual]]