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RS-232\u662f\u4e00\u79cd\u5e38\u7528\u7684\u4e32\u884c\u63a5\u53e3\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u5728\u8ba1\u7b97\u673a\u548c\u8bbe\u5907\u4e4b\u95f4\u4f20\u8f93\u6570\u636e\u3002\u5b83\u662f\u4e00\u79cd\u5355\u5411\u63a5\u53e3\uff0c\u53ef\u4ee5\u4f20\u8f93\u6587\u672c\u3001\u56fe\u50cf\u548c\u97f3\u9891\u7b49\u7c7b\u578b\u7684\u6570\u636e\u3002\u5b83\u7684\u4f20\u8f93\u901f\u7387\u53ef\u4ee5\u8fbe\u5230115200 bps\uff0c\u5b83\u53ef\u4ee5\u5728\u77ed\u8ddd\u79bb\u4f20\u8f93\u6570\u636e\u3002<\/p>\n RS-422\u662f\u4e00\u79cd\u53cc\u5411\u63a5\u53e3\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u5728\u4e24\u4e2a\u8bbe\u5907\u4e4b\u95f4\u4f20\u8f93\u6570\u636e\u3002\u5b83\u7684\u4f20\u8f93\u901f\u7387\u53ef\u4ee5\u8fbe\u52301 Mbps\uff0c\u5b83\u53ef\u4ee5\u5728\u957f\u8ddd\u79bb\u4f20\u8f93\u6570\u636e\u3002\u5b83\u4e5f\u53ef\u4ee5\u7528\u4e8e\u4f20\u8f93\u6587\u672c\u3001\u56fe\u50cf\u548c\u97f3\u9891\u7b49\u7c7b\u578b\u7684\u6570\u636e\u3002<\/p>\n RS-485\u662f\u4e00\u79cd\u591a\u70b9\u63a5\u53e3\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u5728\u591a\u4e2a\u8bbe\u5907\u4e4b\u95f4\u4f20\u8f93\u6570\u636e\u3002\u5b83\u7684\u4f20\u8f93\u901f\u7387\u53ef\u4ee5\u8fbe\u523010 Mbps\uff0c\u5b83\u53ef\u4ee5\u7528\u4e8e\u5728\u957f\u8ddd\u79bb\u4f20\u8f93\u6570\u636e\u3002\u5b83\u4e5f\u53ef\u4ee5\u7528\u4e8e\u4f20\u8f93\u6587\u672c\u3001\u56fe\u50cf\u548c\u97f3\u9891\u7b49\u7c7b\u578b\u7684\u6570\u636e\u3002<\/p>\n 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RS-232<\/h3>\n
RS-422<\/h3>\n
RS-485<\/h3>\n
\u603b\u7ed3<\/h2>\n