Protocol adapter for passing diagnostic messages between a host computer and vehicle networks operating in J1939 or J1708 protocol

摘要

A protocol adapter for transferring diagnostic messages between networks within a vehicle and a host computer. The protocol adapter operates as a voltage translator to support J1708 software. The protocol adapter also recognizes when the protocol adapter is connected to a host computer running the J1939 and/or J1708 protocols and automatically switches to that protocol.