{"id":5002,"date":"2024-11-05T11:00:14","date_gmt":"2024-11-05T03:00:14","guid":{"rendered":"https:\/\/nullthought.net\/?p=5002"},"modified":"2024-11-08T13:48:10","modified_gmt":"2024-11-08T05:48:10","slug":"%e5%85%b3%e4%ba%8e%e8%a5%bf%e9%97%a8%e5%ad%90s7%e5%8d%8f%e8%ae%ae%ef%bc%88siemens-s7-protocol%ef%bc%89","status":"publish","type":"post","link":"https:\/\/nullthought.net\/?p=5002","title":{"rendered":"\u5173\u4e8e\u897f\u95e8\u5b50S7\u534f\u8bae\uff08Siemens S7 Protocol\uff09"},"content":{"rendered":"\n<p>\u897f\u95e8\u5b50S7\u534f\u8bae\uff08Siemens S7 Protocol\uff09\u662f\u4e00\u79cd\u5de5\u4e1a\u901a\u4fe1\u534f\u8bae\uff0c\u4e3b\u8981\u7528\u4e8e\u897f\u95e8\u5b50S7\u7cfb\u5217\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7\u5236\u5668\uff08PLC\uff09\u4e4b\u95f4\u7684\u901a\u4fe1\u3002S7\u534f\u8bae\u901a\u8fc7\u5b9e\u73b0\u9ad8\u6548\u3001\u53ef\u9760\u7684\u6570\u636e\u4ea4\u6362\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5de5\u4e1a\u81ea\u52a8\u5316\u9886\u57df\u4e2d\uff0c\u662f\u897f\u95e8\u5b50\u81ea\u5bb6\u5f00\u53d1\u7684\u4e00\u79cd\u79c1\u6709\u534f\u8bae\uff0c\u5176\u5728\u5de5\u4e1a\u4ee5\u592a\u7f51\u901a\u4fe1\u4e2d\u626e\u6f14\u91cd\u8981\u89d2\u8272\u3002\u4ee5\u4e0b\u662f\u5bf9S7\u534f\u8bae\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff1a<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">1. S7\u534f\u8bae\u6982\u8ff0<\/h5>\n\n\n\n<p>S7\u534f\u8bae\u662f\u4e3a\u897f\u95e8\u5b50S7\u7cfb\u5217PLC\u8bbe\u8ba1\u7684\uff0c\u5141\u8bb8S7 PLC\u4e4b\u95f4\u3001\u4ee5\u53caPLC\u4e0e\u5176\u4ed6\u8bbe\u5907\uff08\u5982SCADA\u7cfb\u7edf\u3001HMI\u8bbe\u5907\u7b49\uff09\u4e4b\u95f4\u7684\u6570\u636e\u4f20\u8f93\u548c\u63a7\u5236\u3002S7\u534f\u8bae\u80fd\u591f\u5728\u591a\u79cd\u7f51\u7edc\u73af\u5883\u4e2d\u8fd0\u884c\uff0c\u4f8b\u5982\u5de5\u4e1a\u4ee5\u592a\u7f51\uff08Ethernet\uff09\u3001Profibus\u7b49\uff0c\u4ee5\u5b9e\u73b0PLC\u7cfb\u7edf\u7684\u8fdc\u7a0b\u63a7\u5236\u548c\u6570\u636e\u91c7\u96c6\u3002<\/p>\n\n\n\n<p>S7\u534f\u8bae\u5c5e\u4e8e\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u4f7f\u7528\u7684\u662f\u57fa\u4e8eISO\/OSI\u6a21\u578b\u7684\u901a\u4fe1\u65b9\u5f0f\uff0c\u901a\u5e38\u5728\u4ee5\u592a\u7f51\u4e2d\u901a\u8fc7TCP\/IP\u6216ISO-TSAP\u6765\u5b9e\u73b0\u3002\u5b83\u901a\u8fc7ISO\u5c42\u534f\u8bae\u8fdb\u884c\u5c01\u88c5\u548c\u4f20\u8f93\uff0c\u4ee5\u4fbf\u5728\u8bbe\u5907\u4e4b\u95f4\u9ad8\u6548\u5730\u8fdb\u884c\u6570\u636e\u4ea4\u6362\u3002<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">2. S7\u534f\u8bae\u7684\u901a\u4fe1\u6a21\u5f0f<\/h5>\n\n\n\n<p>S7\u534f\u8bae\u652f\u6301\u591a\u79cd\u901a\u4fe1\u6a21\u5f0f\uff0c\u7528\u4e8e\u6ee1\u8db3\u4e0d\u540c\u573a\u666f\u7684\u9700\u6c42\uff0c\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u79cd\u6a21\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4e3b\/\u4ece\u901a\u4fe1\uff08Master\/Slave\uff09<\/strong>\uff1a\u5728\u8fd9\u79cd\u901a\u4fe1\u6a21\u5f0f\u4e2d\uff0c\u4e3b\u8bbe\u5907\u53ef\u4ee5\u8bf7\u6c42\u4ece\u8bbe\u5907\u7684\u6570\u636e\u3002\u4ece\u8bbe\u5907\u88ab\u52a8\u5730\u54cd\u5e94\u4e3b\u8bbe\u5907\u7684\u8bf7\u6c42\uff0c\u63d0\u4f9b\u6240\u9700\u7684\u6570\u636e\u6216\u6267\u884c\u547d\u4ee4\u3002<\/li>\n\n\n\n<li><strong>\u5ba2\u6237\u7aef\/\u670d\u52a1\u5668\u901a\u4fe1\uff08Client\/Server\uff09<\/strong>\uff1a\u5728\u6b64\u6a21\u5f0f\u4e2d\uff0c\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u53d1\u51fa\u8bf7\u6c42\uff0c\u670d\u52a1\u5668\u6839\u636e\u8bf7\u6c42\u8fdb\u884c\u54cd\u5e94\u3002\u8fd9\u79cd\u6a21\u5f0f\u7684\u7075\u6d3b\u6027\u66f4\u9ad8\uff0c\u53ef\u4ee5\u9002\u7528\u4e8e\u590d\u6742\u7684\u5206\u5e03\u5f0f\u7cfb\u7edf\u3002<\/li>\n\n\n\n<li><strong>\u70b9\u5bf9\u70b9\u901a\u4fe1\uff08Peer-to-Peer\uff09<\/strong>\uff1aS7\u534f\u8bae\u4e5f\u652f\u6301PLC\u4e4b\u95f4\u7684\u70b9\u5bf9\u70b9\u901a\u4fe1\uff0c\u7528\u4e8e\u5b9e\u73b0\u72ec\u7acbPLC\u95f4\u7684\u6570\u636e\u4ea4\u6362\u3002<\/li>\n\n\n\n<li><strong>HMI\u901a\u4fe1<\/strong>\uff1aHMI\uff08\u4eba\u673a\u754c\u9762\uff09\u8bbe\u5907\u901a\u5e38\u901a\u8fc7S7\u534f\u8bae\u8bbf\u95eePLC\u7684\u6570\u636e\uff0c\u4ee5\u5b9e\u65f6\u663e\u793aPLC\u7684\u72b6\u6001\u548c\u64cd\u4f5c\u53c2\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">3. S7\u534f\u8bae\u7684\u7ed3\u6784<\/h5>\n\n\n\n<p>S7\u534f\u8bae\u7684\u6570\u636e\u5305\u7ed3\u6784\u76f8\u5bf9\u590d\u6742\uff0c\u901a\u5e38\u5305\u62ec\u4ee5\u4e0b\u51e0\u5c42\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>COTP\uff08Connection-Oriented Transport Protocol\uff09<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>COTP\u662fS7\u534f\u8bae\u7528\u4e8e\u8fde\u63a5\u7ba1\u7406\u7684\u4e00\u4e2a\u4f20\u8f93\u5c42\u534f\u8bae\uff0c\u8d1f\u8d23\u5efa\u7acb\u3001\u7ef4\u6301\u548c\u5173\u95ed\u901a\u4fe1\u8fde\u63a5\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>TPKT\uff08Transport Packet\uff09<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>TPKT\u662fISO\/OSI\u6a21\u578b\u4e2d\u7684\u4f20\u8f93\u5c42\uff0c\u7528\u4e8e\u5c01\u88c5\u4e0a\u5c42\u6570\u636e\uff0c\u786e\u4fdd\u6570\u636e\u5728\u7f51\u7edc\u4e0a\u4f20\u8f93\u7684\u53ef\u9760\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>S7\u534f\u8bae\u6570\u636e\u5355\u5143\uff08S7 PDU\uff09<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>S7 PDU\uff08Protocol Data Unit\uff09\u662f\u5e94\u7528\u5c42\u7684\u6838\u5fc3\u6570\u636e\u7ed3\u6784\uff0c\u5305\u542b\u4e86\u5177\u4f53\u7684\u8bf7\u6c42\u3001\u54cd\u5e94\u548c\u6570\u636e\u5185\u5bb9\u3002\u5e38\u89c1\u7684\u64cd\u4f5c\u7c7b\u578b\u6709\u8bfb\u6570\u636e\uff08Read\uff09\u3001\u5199\u6570\u636e\uff08Write\uff09\u3001\u63a7\u5236\u547d\u4ee4\uff08Control\uff09\u3001\u8bca\u65ad\u547d\u4ee4\u7b49\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h5 class=\"wp-block-heading\">4. S7\u901a\u4fe1\u7684\u5e38\u89c1\u529f\u80fd<\/h5>\n\n\n\n<p>S7\u534f\u8bae\u80fd\u591f\u5b9e\u73b0\u591a\u79cd\u529f\u80fd\uff0c\u4ee5\u652f\u6301\u5de5\u4e1a\u63a7\u5236\u4e2d\u7684\u5404\u7c7b\u9700\u6c42\u3002\u4e3b\u8981\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u636e\u8bfb\u5199<\/strong>\uff1aS7\u534f\u8bae\u5141\u8bb8\u5ba2\u6237\u7aef\u5bf9PLC\u7684\u5185\u5b58\u533a\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u8bfb\u53d6\u8f93\u5165\/\u8f93\u51fa\u6570\u636e\u3001\u5b9a\u65f6\u5668\u3001\u8ba1\u6570\u5668\u7b49\u5185\u5bb9\u3002<\/li>\n\n\n\n<li><strong>\u8fdc\u7a0b\u64cd\u4f5c<\/strong>\uff1a\u53ef\u4ee5\u901a\u8fc7S7\u534f\u8bae\u5bf9PLC\u8fdb\u884c\u8fdc\u7a0b\u63a7\u5236\u548c\u8bca\u65ad\u64cd\u4f5c\uff0c\u5982\u542f\u52a8\u3001\u505c\u6b62PLC\uff0c\u83b7\u53d6\u7cfb\u7edf\u72b6\u6001\u7b49\u3002<\/li>\n\n\n\n<li><strong>\u5757\u64cd\u4f5c<\/strong>\uff1a\u652f\u6301\u5bf9PLC\u4e2d\u7684\u529f\u80fd\u5757\uff08Function Blocks\uff09\u6216\u6570\u636e\u5757\uff08Data Blocks\uff09\u8fdb\u884c\u64cd\u4f5c\uff0c\u7528\u6237\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539PLC\u7a0b\u5e8f\u6216\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">5. S7\u534f\u8bae\u7684\u5b9e\u73b0\u65b9\u5f0f<\/h5>\n\n\n\n<p>S7\u534f\u8bae\u7684\u5b9e\u73b0\u901a\u5e38\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4ee5\u592a\u7f51\u901a\u4fe1<\/strong>\uff1a\u5728\u5de5\u4e1a\u4ee5\u592a\u7f51\u4e2d\uff0cS7\u534f\u8bae\u4e3b\u8981\u57fa\u4e8eTCP\/IP\u6216ISO-on-TCP\u8fdb\u884c\u901a\u4fe1\u3002TCP\/IP\u6a21\u5f0f\u5e38\u7528\u4e8e\u6807\u51c6\u4ee5\u592a\u7f51\u73af\u5883\uff0c\u800cISO-on-TCP\u5219\u9002\u7528\u4e8e\u5de5\u4e1a\u5e94\u7528\u4e2d\u9700\u8981\u9ad8\u53ef\u9760\u6027\u7684\u573a\u666f\u3002<\/li>\n\n\n\n<li><strong>Profibus<\/strong>\uff1a\u5728\u57fa\u4e8e\u73b0\u573a\u603b\u7ebf\uff08\u5982Profibus\uff09\u7684\u7f51\u7edc\u73af\u5883\u4e2d\uff0cS7\u534f\u8bae\u53ef\u4ee5\u901a\u8fc7Profibus\u534f\u8bae\u8fdb\u884c\u4f20\u8f93\uff0c\u4e3b\u8981\u7528\u4e8e\u9ad8\u5b9e\u65f6\u6027\u8981\u6c42\u7684\u573a\u5408\u3002<\/li>\n\n\n\n<li><strong>OPC Server<\/strong>\uff1a\u5728\u4e00\u4e9bSCADA\u7cfb\u7edf\u4e2d\uff0c\u901a\u8fc7OPC\u670d\u52a1\u5668\u6765\u8bbf\u95eePLC\uff0cOPC\u670d\u52a1\u5668\u5b9e\u73b0\u4e86\u5bf9S7\u534f\u8bae\u7684\u5c01\u88c5\uff0c\u53ef\u4ee5\u4e0e\u5404\u7c7bHMI\u548cSCADA\u5e94\u7528\u7a0b\u5e8f\u8fdb\u884c\u96c6\u6210\uff0c\u63d0\u4f9b\u6807\u51c6\u63a5\u53e3\u3002<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">6. \u5b89\u5168\u6027\u8003\u8651<\/h5>\n\n\n\n<p>\u7531\u4e8eS7\u534f\u8bae\u672c\u8eab\u662f\u4e00\u4e2a\u65e9\u671f\u5f00\u53d1\u7684\u5de5\u4e1a\u534f\u8bae\uff0c\u5b89\u5168\u6027\u8bbe\u8ba1\u6bd4\u8f83\u8584\u5f31\uff0c\u672a\u5305\u542b\u5f3a\u5927\u7684\u52a0\u5bc6\u548c\u8eab\u4efd\u9a8c\u8bc1\u673a\u5236\uff0c\u56e0\u6b64\u5b58\u5728\u4e00\u4e9b\u5b89\u5168\u9690\u60a3\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5173\u4e8eS7\u534f\u8bae\u5b89\u5168\u6027\u7684\u8003\u8651\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7f3a\u4e4f\u52a0\u5bc6<\/strong>\uff1aS7\u534f\u8bae\u7684\u6570\u636e\u4f20\u8f93\u6ca1\u6709\u7ecf\u8fc7\u52a0\u5bc6\uff0c\u8fd9\u4f7f\u5f97\u534f\u8bae\u6781\u6613\u53d7\u5230\u4e2d\u95f4\u4eba\u653b\u51fb\uff08Man-in-the-Middle, MITM\uff09\uff0c\u653b\u51fb\u8005\u53ef\u4ee5\u7a83\u542c\u751a\u81f3\u7be1\u6539\u901a\u4fe1\u6570\u636e\u3002<\/li>\n\n\n\n<li><strong>\u8ba4\u8bc1\u8584\u5f31<\/strong>\uff1a\u901a\u5e38\u60c5\u51b5\u4e0b\uff0cS7\u534f\u8bae\u7684\u901a\u4fe1\u4e0d\u9700\u8981\u8eab\u4efd\u9a8c\u8bc1\uff0c\u4efb\u4f55\u8fde\u63a5\u5230PLC\u7f51\u7edc\u7684\u8bbe\u5907\u7406\u8bba\u4e0a\u90fd\u53ef\u4ee5\u4e0ePLC\u901a\u4fe1\uff0c\u8fd9\u4e3a\u975e\u6cd5\u8bbf\u95ee\u548c\u6076\u610f\u64cd\u4f5c\u63d0\u4f9b\u4e86\u53ef\u80fd\u6027\u3002<\/li>\n\n\n\n<li><strong>\u5b89\u5168\u589e\u5f3a\u63aa\u65bd<\/strong>\uff1a\u4e3a\u4e86\u63d0\u5347\u5b89\u5168\u6027\uff0c\u901a\u5e38\u4f1a\u4f7f\u7528\u9632\u706b\u5899\u3001VPN\u3001\u6df1\u5ea6\u5305\u68c0\u6d4b\uff08DPI\uff09\u7b49\u7f51\u7edc\u5b89\u5168\u8bbe\u5907\uff0c\u540c\u65f6\u5229\u7528\u897f\u95e8\u5b50\u7684S7\u4fdd\u62a4\u7ea7\u522b\uff08S7 Protection Levels\uff09\u6765\u4fdd\u62a4PLC\u5185\u90e8\u7684\u903b\u8f91\u5757\u548c\u6570\u636e\u5757\u3002<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">7. \u4f7f\u7528\u573a\u666f<\/h5>\n\n\n\n<p>S7\u534f\u8bae\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5404\u7c7b\u5de5\u4e1a\u81ea\u52a8\u5316\u573a\u666f\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5236\u9020\u4e1a<\/strong>\uff1a\u5728\u81ea\u52a8\u5316\u751f\u4ea7\u7ebf\u4e0a\uff0cS7\u534f\u8bae\u7528\u4e8ePLC\u4e4b\u95f4\u7684\u5b9e\u65f6\u901a\u4fe1\u548c\u63a7\u5236\uff0c\u4ee5\u534f\u8c03\u4e0d\u540c\u5de5\u5e8f\u7684\u8bbe\u5907\u8054\u52a8\u3002<\/li>\n\n\n\n<li><strong>\u80fd\u6e90\u7ba1\u7406<\/strong>\uff1a\u5728\u7535\u529b\u3001\u77f3\u6cb9\u3001\u5929\u7136\u6c14\u7b49\u884c\u4e1a\uff0cS7\u534f\u8bae\u7528\u4e8e\u5b9e\u73b0\u5bf9\u8bbe\u5907\u7684\u8fdc\u7a0b\u76d1\u63a7\u548c\u6570\u636e\u91c7\u96c6\uff0c\u5e2e\u52a9\u63d0\u9ad8\u80fd\u6e90\u5229\u7528\u7387\u548c\u7cfb\u7edf\u53ef\u9760\u6027\u3002<\/li>\n\n\n\n<li><strong>\u8fc7\u7a0b\u63a7\u5236<\/strong>\uff1a\u5316\u5de5\u3001\u5236\u836f\u7b49\u884c\u4e1a\u7684\u590d\u6742\u8fc7\u7a0b\u63a7\u5236\u4e2d\uff0cS7\u534f\u8bae\u63d0\u4f9b\u4e86\u53ef\u9760\u7684\u5b9e\u65f6\u6570\u636e\u4ea4\u6362\uff0c\u4f7f\u5f97\u5bf9\u8fc7\u7a0b\u53c2\u6570\u7684\u7cbe\u7ec6\u5316\u63a7\u5236\u6210\u4e3a\u53ef\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">8. S7\u534f\u8bae\u7684\u5e94\u7528\u5de5\u5177<\/h5>\n\n\n\n<p>\u4e3a\u4e86\u4fbf\u4e8e\u7528\u6237\u5f00\u53d1\u548c\u8c03\u8bd5\u57fa\u4e8eS7\u534f\u8bae\u7684\u5e94\u7528\uff0c\u5e02\u573a\u4e0a\u6709\u591a\u79cd\u5de5\u5177\u548c\u5e93\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PLC\u7f16\u7a0b\u5de5\u5177<\/strong>\uff1a\u897f\u95e8\u5b50\u5b98\u65b9\u63d0\u4f9b\u7684Step 7\u548cTIA Portal\u662f\u6700\u5e38\u7528\u7684PLC\u7f16\u7a0b\u548c\u8c03\u8bd5\u5de5\u5177\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u914d\u7f6e\u901a\u4fe1\u53c2\u6570\u548c\u76d1\u63a7S7\u534f\u8bae\u7684\u901a\u4fe1\u8fc7\u7a0b\u3002<\/li>\n\n\n\n<li><strong>\u7b2c\u4e09\u65b9\u5e93<\/strong>\uff1a\u4f8b\u5982Python\u7684<code>python-snap7<\/code>\u548c<code>pymodbus<\/code>\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9S7\u534f\u8bae\u7684\u7f16\u7a0b\u8bbf\u95ee\uff0c\u5e2e\u52a9\u7528\u6237\u901a\u8fc7\u81ea\u5b9a\u4e49\u811a\u672c\u8fdb\u884c\u6570\u636e\u91c7\u96c6\u548c\u63a7\u5236\u3002<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\">9. \u603b\u7ed3<\/h5>\n\n\n\n<p>S7\u534f\u8bae\u662f\u897f\u95e8\u5b50S7\u7cfb\u5217PLC\u7684\u91cd\u8981\u901a\u4fe1\u534f\u8bae\uff0c\u5177\u5907\u5f3a\u5927\u7684\u529f\u80fd\u548c\u5e7f\u6cdb\u7684\u5e94\u7528\u573a\u666f\uff0c\u4f46\u5176\u5728\u5b89\u5168\u6027\u4e0a\u4ecd\u9700\u8fdb\u884c\u8fdb\u4e00\u6b65\u52a0\u5f3a\u3002\u901a\u8fc7\u5bf9S7\u534f\u8bae\u7684\u6df1\u5165\u4e86\u89e3\u548c\u5e94\u7528\uff0c\u80fd\u591f\u5728\u5de5\u4e1a\u81ea\u52a8\u5316\u7cfb\u7edf\u4e2d\u5b9e\u73b0\u9ad8\u6548\u3001\u53ef\u9760\u7684\u901a\u4fe1\uff0c\u63d0\u5347\u751f\u4ea7\u8fc7\u7a0b\u7684\u81ea\u52a8\u5316\u6c34\u5e73\u3002\u540c\u65f6\uff0c\u968f\u7740\u7f51\u7edc\u5b89\u5168\u5f62\u52bf\u7684\u53d8\u5316\uff0c\u5bf9S7\u534f\u8bae\u7684\u4f7f\u7528\u4e5f\u9700\u8981\u52a0\u5f3a\u5b89\u5168\u9632\u62a4\u63aa\u65bd\uff0c\u4ee5\u4fdd\u8bc1\u5de5\u4e1a\u63a7\u5236\u7cfb\u7edf\u7684\u5b89\u5168\u6027\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u897f\u95e8\u5b50S7\u534f\u8bae\uff08Siemens S7 Protocol\uff09\u662f\u4e00\u79cd\u5de5\u4e1a\u901a\u4fe1\u534f\u8bae\uff0c\u4e3b\u8981\u7528\u4e8e\u897f\u95e8\u5b50S7\u7cfb\u5217\u53ef\u7f16\u7a0b\u903b\u8f91\u63a7 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[3,8],"tags":[62,69,40],"class_list":["post-5002","post","type-post","status-publish","format-standard","hentry","category-it","category-tech","tag-62","tag-engineering","tag-iot"],"rttpg_featured_image_url":null,"rttpg_author":{"display_name":"NullThought","author_link":"https:\/\/nullthought.net\/?author=1"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/nullthought.net\/?cat=3\" rel=\"category\">IT<\/a> <a href=\"https:\/\/nullthought.net\/?cat=8\" rel=\"category\">Tech<\/a>","rttpg_excerpt":"\u897f\u95e8\u5b50S7\u534f\u8bae\uff08Siemens S7 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