{"id":68727,"date":"2023-12-21T07:34:37","date_gmt":"2023-12-20T23:34:37","guid":{"rendered":"\/\/www.viralrail.com\/?p=68727"},"modified":"2023-12-21T07:34:37","modified_gmt":"2023-12-20T23:34:37","slug":"rzcnxsjgs","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/68727.html","title":{"rendered":"RS485\u652f\u6301\u54ea\u4e9b\u6570\u636e\u683c\u5f0f?"},"content":{"rendered":"
RS485\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u4e32\u884c\u901a\u4fe1\u534f\u8bae\uff0c\u5b83\u652f\u6301\u54ea\u4e9b\u6570\u636e\u683c\u5f0f\uff1f\u672c\u6587\u5c06\u4ecb\u7ecdRS485\u7684\u6570\u636e\u683c\u5f0f\u4ee5\u53ca\u5176\u5e94\u7528\u3002<\/p>\n
RS485\u652f\u6301\u7684\u6570\u636e\u683c\u5f0f\u5305\u62ecASCII\u7801\u3001Modbus RTU\u3001Modbus ASCII\u7b49\u3002ASCII\u7801\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u5b57\u7b26\u7f16\u7801\u65b9\u5f0f\uff0cModbus RTU\u548cModbus ASCII\u5219\u662f\u7528\u4e8e\u4e32\u884c\u901a\u4fe1\u7684\u534f\u8bae\uff0c\u5b83\u4eec\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u3001\u5efa\u7b51\u81ea\u52a8\u5316\u7b49\u9886\u57df\u6709\u5e7f\u6cdb\u5e94\u7528\u3002<\/p>\n
ASCII\uff08American Standard Code for Information Interchange\uff09\u7801\u662f\u4e00\u79cd\u7528\u4e8e\u5b57\u7b26\u7f16\u7801\u7684\u6807\u51c6\uff0c\u5b83\u4f7f\u7528\u4e03\u4f4d\u6216\u516b\u4f4d\u7684\u4e8c\u8fdb\u5236\u6570\u6765\u8868\u793a\u5b57\u7b26\u548c\u63a7\u5236\u5b57\u7b26\u3002\u5728RS485\u901a\u4fe1\u4e2d\uff0cASCII\u7801\u5e38\u7528\u4e8e\u4eba\u673a\u754c\u9762\u3001\u6587\u672c\u6587\u4ef6\u4f20\u8f93\u7b49\u5e94\u7528\u3002<\/p>\n
Modbus RTU<\/a>\u662f\u4e00\u79cd\u57fa\u4e8e\u4e8c\u8fdb\u5236\u7f16\u7801\u7684\u4e32\u884c\u901a\u4fe1\u534f\u8bae\uff0c\u5b83\u4f7f\u7528RS485\u8fdb\u884c\u6570\u636e\u4f20\u8f93\u3002Modbus RTU\u652f\u6301\u591a\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u5305\u62ec\u7ebf\u5708\uff08Coils\uff09\u3001\u79bb\u6563\u8f93\u5165\uff08Discrete Inputs\uff09\u3001\u4fdd\u6301\u5bc4\u5b58\u5668\uff08Holding Registers\uff09\u548c\u8f93\u5165\u5bc4\u5b58\u5668\uff08Input Registers\uff09\u7b49\u3002<\/p>\n Modbus ASCII<\/h3>\n