应用程序可配置消息

[中文适用范围]： SAE J1939 文件适用于公路或越野使用的轻型、中型和重型车辆以及使用车辆衍生组件（例如发电机组）的适当固定应用。感兴趣的车辆包括但不限于公路和非公路卡车及其拖车、建筑设备以及农业设备和工具。这些文档的目的是为电子系统提供开放式互连系统。这些文档的目的是通过提供标准架构来允许电子控制单元相互通信。该特定文档 SAE J1939-74 描述了一组消息的消息结构，这些消息使用户能够确定并向网络上的其他人通告来自本文档中定义的特殊消息组的特定消息内的参数放置。 [外文原描述]： The SAE J1939 documents are intended for light, medium, and heavy-duty vehicles used on or off road as well as appropriate stationary applications which use vehicle derived components (e.g. generator sets). Vehicles of interest include, but are not limited to, on- and off-highway trucks and their trailers, construction equipment, and agricultural equipment and implements.The purpose of these documents is to provide an open interconnect system for electronic systems. It is the intention of these documents to allow Electronic Control Units to communicate with each other by providing a standard architecture.This particular document, SAE J1939-74, describes the message structure for a set of messages which enable the user to determine and announce to others on the network, the parameter placement within a particular message from the special set of messages defined within this document.Cross Reference: ISO11783,J1939/21_201504,J1939/71_201309,J1939/73_201307,J1939/81_201106,J1939_201308