Changes

==Description==

==Description==

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 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.  

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

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

==Software Configuration of {{{model|FMX640}}}with J1708==

==Software Configuration of {{{model|FMX640}}} with J1708==

{{{FMB640CFG|'''Firmware version:''' 00.00.11 or above </br>

{{{FMB640CFG|'''Firmware version:''' 00.00.11 or above </br>

[[image:J1708_config.gif]]

[[image:J1708_config.gif]]

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.  

==Connection with Vehicle port==

==Connection with Vehicle port==