无法通过这个协议命令连接。

Unable to negotiate secure command connection.

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设计使用XML文件描述各种不同的网络协议数据格式规范，定义不同类型和属性的节点描述网络协议命令格式。

This thesis designs to use XML file describing various network protocols'data format and defines different types of nodes to describe the network protocol command format.

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通过对VB通讯功能和HART协议命令方式的描述，详细介绍了基于HART协议的PC组态软件的设计方法。

Through describing communication function of VB and HART protocol commands the design method of PC configuration software based HART protocol is described in detail.

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