XPath — 允许您指定一个 XPath 表达式，在使用网关的所有服务中分解为一个惟一标识符。
XPath-- Lets you specify an XPath expression that resolves into a unique identifier across all the services the Gateway is being used for.
文章主要介绍了网关的软件设计方法，节点接收滤波器和消息标识符的设置及其在多点通信中的应用。
The paper mainly introduces the architecture of Ethernet-CAN gateway, setting of messages identifier, accepting filter for nodes, and the application in multicast communication.
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