定义一个过程，使设备能够自动检测SAE J1939-11、SAE J1939-14或SAE J1939-15网络的波特率，以尽量减少或消除现有设备之间的通信中断。这些网络仅支持ISO 11898-1中定义的CBFF和CEFF数据帧。

Define a process enabling devices to detect the baud rate of a SAE J1939-11, SAE J1939-14, or SAE J1939-15 network automatically with the intent of minimizing or eliminating communication disruption between existing devices. These networks only support CBFF and CEFF Data Frames, as defined in ISO 11898-1.