Integration of fuel cell Auxiliary Power Units (APUs) into vehicles requires that the vehicle Electronic Control Unit (ECU) communicate with the fuel cell controller using appropriate protocol. The common communication standard used in automotive systems is the CAN protocol. Some fuel cell controllers originate from stationary power scenarios and communicate using process industry communication protocols such as MODBUS. This paper reviews the MODBUS TCP protocol and CAN protocol. It then describes the MODBUS TCP software driver development for QNX Real Time Operating System (RTOS) used in the SwRI® Rapid Prototyping Electronic Control System (RPECS). The architecture of the communication system on the vehicle and details of RPECS needed to understand the MODBUS drivers are described. Tools such as RPECS™ and EtherPeek™ (TCP/IP packet sniffing software) used during debugging are also briefly described. A new mapping method for conversion between MODBUS and CAN protocols is proposed.This work has been developed at Southwest Research Institute on the SunLine Project, funded by US Army National Automotive Center.


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    Titel :

    In Vehicle Communication With Solid Oxide Fuel Cell Using MODBUS Protocol


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE 2005 World Congress & Exhibition ; 2005



    Erscheinungsdatum :

    11.04.2005




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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