串行口支持3种通讯规范，可以很方便地嵌入到使用RS-485通讯接口、RS-232通讯接口和电流环通讯接口的网络节点中；
Serial interface supports three communication criterions and can easily embeds itself to network nodes being composed of RS-485, RS-232 and circuit.
串行口支持3种通讯规范，可以很方便地嵌入到使用RS-485通讯接口、RS-232通讯接口和电流环通讯接口的网络节点中；
Serial interface supports three communication criterions and can easily embeds itself to network nodes being composed of RS-485, RS-232 and circuit.
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