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− | SAE J1708 is a standard used for serial communications between ECUs on a heavy-duty. The hardware utilized is RS-485 transceivers wired for open collector operation through the use of a pullup and pulldown of the separate data lines.
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− | With {{{model|FMX640}}}, J1708 functionality is used to read vehicle's Fuel Level and Fuel consumption.
| + | ==Description== |
| + | SAE J1708 is a standard used for serial communications between ECUs on heavy-duty. The hardware utilized is RS-485 transceivers wired for open collector operation through the use of a pullup and pulldown of the separate data lines. |
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− | Because J1708 is not a CAN-BUS protocol, {{{model|FMX640}}} CAN1 and CAN2 lines cannot be used to read J1708 information. {{{model|FMX640}}} has a special J1708 Port, which utilizes an RJ9 4P4C connector. | + | With [[{{{model|FMX640}}}]], J1708 functionality is used to read vehicle's Fuel Level and Fuel consumption. |
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| + | Because J1708 is not a CAN-BUS protocol, [[{{{model|FMX640}}}]] CAN1 and CAN2 lines cannot be used to read J1708 information. [[{{{model|FMX640}}}]] has a special J1708 Port, which utilizes an RJ9 4P4C connector. |
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| [[Image:FMX640_and_J1708_illustration_v1.2.png]] <br> | | [[Image:FMX640_and_J1708_illustration_v1.2.png]] <br> |
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− | ==Software Configuration of {{{model|FMX640}}}with J1708== | + | ==Software Configuration of {{{model|FMX640}}} with J1708== |
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| {{{FMB640CFG|'''Firmware version:''' 00.00.11 or above </br> | | {{{FMB640CFG|'''Firmware version:''' 00.00.11 or above </br> |
| '''Configurator version:''' 0.13.35.29297 or above | | '''Configurator version:''' 0.13.35.29297 or above |
| }}} | | }}} |
− | J1708 configuration is done in the FMS IO Tab. | + | J1708 configuration is done in the [[{{{model|FMX640}}}_LVCAN_I/O,FMS_IO_and_Tachograph_data_elements|FMS IO]] Tab. |
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| [[image:J1708_config.gif]] | | [[image:J1708_config.gif]] |
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− | When J1708 is enabled as Fuel Level source, Fuel related data will be taken from the J1708 line, FMS Fuel data will be ignored. | + | When J1708 is enabled as a Fuel Level source, Fuel-related data will be taken from the J1708 line, FMS Fuel data will be ignored. |
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| ==Connection with Vehicle port== | | ==Connection with Vehicle port== |