Changes

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.

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.

With {{{model|FMX640}}}, J1708 functionality is used to read vehicle's Fuel Level and Fuel consumption.  

With [[{{{model|FMX640}}}]], J1708 functionality is used to read vehicle's Fuel Level and Fuel consumption.  

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.  

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.  

[[Image:FMX640_and_J1708_illustration_v1.2.png]] <br>

[[Image:FMX640_and_J1708_illustration_v1.2.png]] <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.

[[image:J1708_config.gif]]

[[image:J1708_config.gif]]