DI232
工业以太网是一种用于工业控制领域的以太网通信协议。它的构成包括以下组成部分:
1. 物理层:工业以太网的物理层通常采用双绞线或光纤传输。双绞线在10BASE-T和100BASE-TX中应用广泛,而光纤在100BASE-FX和1000BASE-SX等高速通信中被广泛使用。
2. 数据链路层:工业以太网的数据链路层采用IEEE 802.3标准,并添加了一些额外的特性和机制,例如帧前导码、帧检验序列、帧间间隔和碰撞检测等功能。
3. 网络层:工业以太网通常采用IP协议作为网络层协议,从而支持网络互连和跨网通信。
4. 传输层:工业以太网的传输层通常采用TCP或UDP协议,并提供可靠的端到端数据传输。
5. 应用层:工业以太网的应用层协议包括Modbus/TCP、EtherNet/IP、PROFINET、TCP/IP等等,它们提供了各种工业控制领域所需的应用程序接口。
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