https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/技术 × 产品 × 机器人Hugo 0.160.1 & FixIt v0.4.6-20260517062719-ed8ec5c2zh-CNruohuyang@163.com (Cygnus Yang)ruohuyang@163.com (Cygnus Yang)Sat, 23 May 2026 00:00:00 +0800https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/01-eds-file-format/Sat, 23 May 2026 00:00:00 +0800ruohuyang@163.com (Cygnus Yang)https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/01-eds-file-format/<h2 class="heading-element" id="什么是-eds-文件"><span>什么是 EDS 文件</span> <a href="#%e4%bb%80%e4%b9%88%e6%98%af-eds-%e6%96%87%e4%bb%b6" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p>EDS（Electronic Data Sheet，电子数据表）是 CANOpen 设备的&quot;身份证&quot;。它描述了一个设备的完整对象字典结构，使主站能够在不事先了解设备内部细节的情况下，正确配置和访问从节点。</p>https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/06-sdo-client-server-impl/Sat, 23 May 2026 00:00:00 +0800ruohuyang@163.com (Cygnus Yang)https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/06-sdo-client-server-impl/<h2 class="heading-element" id="架构概述"><span>架构概述</span> <a href="#%e6%9e%b6%e6%9e%84%e6%a6%82%e8%bf%b0" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p>SDO 通信采用典型的 <strong>Client/Server</strong> 架构：</p>https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/04-sdo-expedited-transfer/Sat, 23 May 2026 00:00:00 +0800ruohuyang@163.com (Cygnus Yang)https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/04-sdo-expedited-transfer/<h2 class="heading-element" id="概述"><span>概述</span> <a href="#%e6%a6%82%e8%bf%b0" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p>Expedited（快速）传输是 SDO 中最简单的数据传输方式，适用于 <strong>≤ 4 字节</strong> 的数据。它的特点是：</p>https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/05-sdo-segmented-transfer/Sat, 23 May 2026 00:00:00 +0800ruohuyang@163.com (Cygnus Yang)https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/05-sdo-segmented-transfer/<h2 class="heading-element" id="概述"><span>概述</span> <a href="#%e6%a6%82%e8%bf%b0" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p>当数据 <strong>&gt; 4 字节</strong> 时，必须使用 Segmented（分段）传输。每段 CAN 帧最多携带 7 字节有效数据（字节 1-7）。</p>https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/03-sdo-protocol-detail/Sat, 23 May 2026 00:00:00 +0800ruohuyang@163.com (Cygnus Yang)https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/03-sdo-protocol-detail/<h2 class="heading-element" id="sdo-基本概念"><span>SDO 基本概念</span> <a href="#sdo-%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p>SDO（Service Data Object，服务数据对象）是 CANOpen 中用于<strong>非实时、参数访问</strong>的通信机制。它采用 <strong>Client/Server</strong> 模型：</p>https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/02-object-dictionary-memory-model/Sat, 23 May 2026 00:00:00 +0800ruohuyang@163.com (Cygnus Yang)https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/02-object-dictionary-memory-model/<h2 class="heading-element" id="什么是对象字典"><span>什么是对象字典</span> <a href="#%e4%bb%80%e4%b9%88%e6%98%af%e5%af%b9%e8%b1%a1%e5%ad%97%e5%85%b8" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><p>对象字典（Object Dictionary，简称 OD）是 CANOpen 设备的&quot;数据中心&quot;。它是一个结构化的数据集合，包含了设备的所有参数、配置、状态和通信参数。</p>https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/07-practice-project/Sat, 23 May 2026 00:00:00 +0800ruohuyang@163.com (Cygnus Yang)https://cygnusyang.github.io/posts/02-%E5%B7%A5%E7%A8%8B%E9%82%A3%E4%BA%9B%E4%BA%8B/03-canopen/docs/module-02-od-sdo/07-practice-project/<h2 class="heading-element" id="练习-1eds-文件验证器"><span>练习 1：EDS 文件验证器</span> <a href="#%e7%bb%83%e4%b9%a0-1eds-%e6%96%87%e4%bb%b6%e9%aa%8c%e8%af%81%e5%99%a8" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h2><h3 class="heading-element" id="目标"><span>目标</span> <a href="#%e7%9b%ae%e6%a0%87" class="heading-mark"> <svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg> </a> </h3><p>编写一个程序，验证 EDS 文件的语法正确性和语义一致性。</p>