本文件规定了显示单元与连接至基于SAE J1939的车内网络的其他设备之间基于CAN的数据通信。根据OSI参考模型，提供的要求和建议涵盖物理层、数据链路层、网络层和应用层。此外，它还指定了受支持的参数组。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies the CAN-based data communication between the display unit and other devices connected to an SAE J1939-based in-vehicle network. The provided requirements and recommendations cover physical, data link, network, and application layers according to the OSI reference model. Additionally, it specifies the parameter groups, which are supported.All current amendments available at time of purchase are included with the purchase of this document.