Application Layer Definition and Analyses of Controller Area Network Bus for Wire Harness Assembly Machine

摘要

With the feature of multi-master bus access, nondestructive contention-basedarbitration and flexible configuration, Controller Area Network (CAN) bus isapplied into the control system of Wire Harness Assembly Machine (WHAM). Toaccomplish desired goal, the specific features of the CAN bus is analyzed bycompared with other field buses and the functional performances in the CAN bussystem of WHAM is discussed. Then the application layer planning of CAN bus fordynamic priority is presented. The critical issue for the use of CAN bus systemin WHAM is the data transfer rate between different nodes. So processingefficient model is introduced to assist analyzing data transfer procedure.Through the model, it is convenient to verify the real time feature of the CANbus system in WHAM.