{"id":41657,"date":"2026-04-05T11:36:02","date_gmt":"2026-04-05T03:36:02","guid":{"rendered":"https:\/\/www.modbus.cn\/?p=41657"},"modified":"2026-04-05T11:36:06","modified_gmt":"2026-04-05T03:36:06","slug":"20-nian-jing-yan-ning-ju-modbus-tiao-shi-zhu-shou-jie-shao","status":"publish","type":"post","link":"https:\/\/www.modbus.cn\/en\/41657.html","title":{"rendered":"20\u5e74\u7ecf\u9a8c\u51dd\u805a\uff1aModbus\u8c03\u8bd5\u52a9\u624b\u4ecb\u7ecd"},"content":{"rendered":"\n

\u6211\u7528 3 \u4e2a\u6708\uff0c\u628a 20 \u5e74\u7684\u5de5\u4e1a\u8c03\u8bd5\u7ecf\u9a8c\u505a\u6210\u4e86\u5fae\u4fe1\u5c0f\u7a0b\u5e8f<\/h1>\n\n\n\n
\n

\u4ece Modbus \u8c03\u8bd5\u5230 PID \u6574\u5b9a\uff0c\u4ece\u4e32\u53e3\u901a\u4fe1\u5230\u4f20\u611f\u5668\u6807\u5b9a\uff0c\u8fd9\u6b3e\u5de5\u5177\u96c6\u6210\u4e86\u5de5\u7a0b\u5e08\u6700\u5e38\u7528\u7684 20+ \u4e13\u4e1a\u8ba1\u7b97\u5668<\/p>\n<\/blockquote>\n\n\n\n

\n\n\n\n

\u524d\u8a00\uff1a\u4e00\u4e2a\u5de5\u7a0b\u5e08\u7684”\u6267\u5ff5”<\/h2>\n\n\n\n

\u6211\u662f\u4e00\u540d\u5de5\u4e1a\u81ea\u52a8\u5316\u5de5\u7a0b\u5e08\uff0c\u4ece\u4e1a 20 \u5e74\uff0c\u5f85\u8fc7\u8bbe\u5907\u5382\u5546\u3001\u96c6\u6210\u5546\uff0c\u4e5f\u505a\u8fc7\u7532\u65b9\u3002<\/p>\n\n\n\n

\u8fd9\u4e9b\u5e74\uff0c\u6211\u89c1\u8fc7\u592a\u591a\u5de5\u7a0b\u5e08\u5728\u73b0\u573a\u7684”\u72fc\u72c8”\uff1a<\/p>\n\n\n\n

    \n
  • \u80cc\u7740\u5341\u51e0\u65a4\u91cd\u7684\u7535\u8111\u8dd1\u73b0\u573a\uff0c\u5c31\u4e3a\u4e86\u8c03\u8bd5\u4e00\u4e2a Modbus \u8bbe\u5907<\/li>\n\n\n\n
  • \u5fd8\u5e26 USB \u8f6c\u4e32\u53e3\u7ebf\uff0c\u6574\u4e2a\u9879\u76ee\u505c\u5de5\u534a\u5929<\/li>\n\n\n\n
  • \u7535\u8111\u4e0a\u7684\u8f6f\u4ef6\u8981\u6536\u8d39\uff0c\u7834\u89e3\u7248\u8fd8\u6015\u6709\u75c5\u6bd2<\/li>\n\n\n\n
  • PID \u53c2\u6570\u4e0d\u4f1a\u6574\uff0c\u6253\u7535\u8bdd\u95ee\u5382\u5bb6\uff0c\u7b49\u534a\u5929\u56de\u590d<\/li>\n\n\n\n
  • \u4f20\u611f\u5668\u6807\u5b9a\u9760\u624b\u7b97\uff0c\u8ba1\u7b97\u5668\u6309\u9519\u4e00\u6b21\uff0c\u5168\u90e8\u91cd\u6765<\/li>\n<\/ul>\n\n\n\n

    \u6700\u75db\u82e6\u7684\u4e00\u6b21<\/strong>\uff0c\u662f\u67d0\u6b21\u6df1\u591c\u62a2\u4fee\u3002\u5ba2\u6237\u7684 PLC \u901a\u4fe1\u6545\u969c\uff0c\u6211\u8d76\u5230\u65f6\u5df2\u7ecf\u662f\u665a\u4e0a 10 \u70b9\u3002\u7ed3\u679c\u53d1\u73b0\u5fd8\u5e26\u7535\u8111\uff0c\u53ea\u80fd\u6253\u7535\u8bdd\u8ba9\u540c\u4e8b\u9001\uff0c\u6298\u817e\u5230\u51cc\u6668 3 \u70b9\u624d\u641e\u5b9a\u3002<\/p>\n\n\n\n

    \u90a3\u4e00\u523b\u6211\u5c31\u60f3\uff1a\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u53ea\u5e26\u624b\u673a\u5c31\u53bb\u73b0\u573a\uff1f<\/strong><\/p>\n\n\n\n

    \u4e8e\u662f\uff0c\u6211\u82b1\u4e86\u6574\u6574 3 \u4e2a\u6708\uff0c\u5229\u7528\u4e1a\u4f59\u65f6\u95f4\u5f00\u53d1\u4e86\u8fd9\u6b3e Modbus \u8c03\u8bd5\u52a9\u624b<\/strong> \u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u3002<\/p>\n\n\n\n

    \u5b83\u4e0d\u4ec5\u4ec5\u662f\u4e00\u4e2a\u8c03\u8bd5\u5de5\u5177\uff0c\u66f4\u662f\u6211 20 \u5e74\u7ecf\u9a8c\u7684\u7ed3\u6676\u3002<\/p>\n\n\n\n

    \n\n\n\n

    \u4e00\u3001\u6838\u5fc3\u529f\u80fd\uff1a20+ \u4e13\u4e1a\u5de5\u5177\uff0c\u88c5\u8fdb\u624b\u673a<\/h2>\n\n\n\n

    1.1 Modbus \u8c03\u8bd5\u5168\u5bb6\u6876<\/h3>\n\n\n\n

    \u5c0f\u7a0b\u5e8f\u6700\u6838\u5fc3\u7684\u529f\u80fd\uff0c\u5c31\u662f \u5b8c\u6574\u7684 Modbus \u534f\u8bae\u6808\u652f\u6301<\/strong>\u3002<\/p>\n\n\n\n

    \uff081\uff09Modbus Poll – \u4e3b\u7ad9\u8f6e\u8be2\u5de5\u5177<\/h4>\n\n\n\n

    \u8fd9\u662f\u4f7f\u7528\u9891\u7387\u6700\u9ad8\u7684\u529f\u80fd\uff0c\u6ca1\u6709\u4e4b\u4e00\u3002<\/p>\n\n\n\n

    \u652f\u6301\u7684\u529f\u80fd\u7801\uff1a<\/strong><\/p>\n\n\n\n

    \u529f\u80fd\u7801<\/th>\u540d\u79f0<\/th>\u7528\u9014<\/th><\/tr><\/thead>
    FC01<\/td>Read Coils<\/td>\u8bfb\u53d6\u7ebf\u5708\u72b6\u6001\uff08\u5f00\u5173\u91cf\u8f93\u51fa\uff09<\/td><\/tr>
    FC02<\/td>Read Discrete Inputs<\/td>\u8bfb\u53d6\u79bb\u6563\u8f93\u5165\uff08\u5f00\u5173\u91cf\u8f93\u5165\uff09<\/td><\/tr>
    FC03<\/td>Read Holding Registers<\/td>\u8bfb\u53d6\u4fdd\u6301\u5bc4\u5b58\u5668\uff08\u6700\u5e38\u7528\uff09<\/td><\/tr>
    FC04<\/td>Read Input Registers<\/td>\u8bfb\u53d6\u8f93\u5165\u5bc4\u5b58\u5668\uff08\u53ea\u8bfb\uff09<\/td><\/tr>
    FC05<\/td>Write Single Coil<\/td>\u5199\u5165\u5355\u4e2a\u7ebf\u5708<\/td><\/tr>
    FC06<\/td>Write Single Register<\/td>\u5199\u5165\u5355\u4e2a\u5bc4\u5b58\u5668<\/td><\/tr>
    FC15<\/td>Write Multiple Coils<\/td>\u5199\u5165\u591a\u4e2a\u7ebf\u5708<\/td><\/tr>
    FC16<\/td>Write Multiple Registers<\/td>\u5199\u5165\u591a\u4e2a\u5bc4\u5b58\u5668<\/td><\/tr>
    FC17<\/td>Report Slave ID<\/td>\u901a\u62a5\u5ba2\u6237\u7aef ID<\/td><\/tr>
    FC22<\/td>Mask Write Register<\/td>\u63a9\u7801\u5199\u5bc4\u5b58\u5668\uff08\u6539\u5355\u4e2a bit\uff09<\/td><\/tr>
    FC23<\/td>Read\/Write Multiple<\/td>\u540c\u65f6\u8bfb\/\u5199\u591a\u4e2a\u5bc4\u5b58\u5668<\/td><\/tr>
    FC43\/14<\/td>Read Device ID<\/td>\u8bfb\u53d6\u8bbe\u5907\u6807\u8bc6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    \u8fde\u63a5\u65b9\u5f0f\uff1a<\/strong><\/p>\n\n\n\n

      \n
    • Modbus TCP<\/strong>\uff1a\u652f\u6301\u4efb\u610f IP \u548c\u7aef\u53e3\uff0c\u81ea\u52a8\u4fdd\u5b58\u8fde\u63a5\u5386\u53f2<\/li>\n\n\n\n
    • \u84dd\u7259\u8fde\u63a5<\/strong>\uff1a\u652f\u6301\u666e\u901a\u84dd\u7259\u8f6c 485 \u6a21\u5757\u548c PACO \u84dd\u7259\u9002\u914d\u5668<\/li>\n\n\n\n
    • \u7aef\u53e3\u8f6c\u53d1<\/strong>\uff1a\u652f\u6301\u8def\u7531\u5668\u7aef\u53e3\u6620\u5c04\uff08\u5982\u5916\u90e8 1502 \u2192 \u5185\u90e8 502\uff09<\/li>\n<\/ul>\n\n\n\n

      \u6570\u636e\u663e\u793a\u683c\u5f0f\uff1a<\/strong><\/p>\n\n\n\n

      \u540c\u4e00\u4e2a\u5bc4\u5b58\u5668\u7684\u539f\u59cb\u6570\u636e\uff0c\u652f\u6301 7 \u79cd\u663e\u793a\u683c\u5f0f<\/strong> \u4e00\u952e\u5207\u6362\uff1a<\/p>\n\n\n\n

      Signed\uff08\u6709\u7b26\u53f7\uff09   \u2192  -32768 ~ 32767\nUnsigned\uff08\u65e0\u7b26\u53f7\uff09 \u2192  0 ~ 65535\nHex\uff08\u5341\u516d\u8fdb\u5236\uff09    \u2192  0x0000 ~ 0xFFFF\nLong\uff08\u957f\u6574\u578b\uff09     \u2192  32 \u4f4d\u6574\u6570\nFloat\uff08\u6d6e\u70b9\u578b\uff09    \u2192  IEEE 754 \u5355\u7cbe\u5ea6\nFloat Swapped      \u2192  \u5b57\u8282\u53cd\u8f6c\u6d6e\u70b9\nBinary\uff08\u4e8c\u8fdb\u5236\uff09   \u2192  0000 0000 0000 0001\n<\/pre><\/div>\n\n\n\n
      \n
      \ud83d\udca1 \u5b9e\u9645\u6848\u4f8b<\/strong>\uff1a\u67d0\u6e29\u5ea6\u4f20\u611f\u5668\u8fd4\u56de 0x4248 0x0000\uff0c\u5982\u679c\u6309 16 \u4f4d\u6574\u6570\u770b\u662f 17480 \u548c 0\uff0c\u5b8c\u5168\u4e0d\u5bf9\u3002\u5207\u6362\u5230 Float \u683c\u5f0f\uff0c\u663e\u793a 50.0\uff0c\u8fd9\u624d\u662f\u5b9e\u9645\u6e29\u5ea6\u503c\u3002<\/p>\n<\/blockquote>\n\n\n\n
      \u9ad8\u7ea7\u5de5\u5177\uff1a<\/strong><\/p>\n\n\n\n
        \n
      • \u901a\u8baf\u76d1\u89c6\u9762\u677f<\/strong>\uff1a\u5b9e\u65f6\u8bb0\u5f55\u6240\u6709 Tx\/Rx \u539f\u59cb\u62a5\u6587\uff0c\u652f\u6301\u6682\u505c\/\u7ee7\u7eed\uff0c\u4e00\u952e\u5206\u4eab<\/li>\n\n\n\n
      • TC \u6d4b\u8bd5\u4e2d\u5fc3<\/strong>\uff1a\u624b\u52a8\u8f93\u5165 Hex \u5b57\u7b26\u4e32\u53d1\u9001\uff0c\u67e5\u770b\u539f\u59cb\u54cd\u5e94\uff0c\u8c03\u8bd5\u81ea\u5b9a\u4e49\u534f\u8bae<\/li>\n\n\n\n
      • \u5b9e\u65f6\u56fe\u8868<\/strong>\uff1a\u8f93\u5165\u8981\u76d1\u63a7\u7684\u5bc4\u5b58\u5668\u5730\u5740\uff0c\u67f1\u72b6\u56fe\u5b9e\u65f6\u663e\u793a\u6570\u503c\u53d8\u5316<\/li>\n\n\n\n
      • \u8bf7\u6c42\u62a5\u6587\u9884\u89c8<\/strong>\uff1a\u5728\u8bbe\u7f6e\u754c\u9762\u5b9e\u65f6\u663e\u793a\u5373\u5c06\u53d1\u9001\u7684 RTU\/ASCII \u5e27\u7ed3\u6784\uff08\u542b CRC\/LRC \u6821\u9a8c\uff09<\/li>\n<\/ul>\n\n\n\n
        \uff082\uff09Modbus Slave – \u4ece\u7ad9\u6a21\u62df\u5668<\/h4>\n\n\n\n
        \u8fd9\u4e2a\u529f\u80fd\u5f88\u591a\u4eba\u5ffd\u7565\uff0c\u4f46\u5176\u5b9e\u975e\u5e38\u5b9e\u7528\u3002<\/p>\n\n\n\n
        \u4f7f\u7528\u573a\u666f\uff1a<\/strong><\/p>\n\n\n\n
          \n
        • \u6d4b\u8bd5\u4e0a\u4f4d\u673a\u8f6f\u4ef6\uff08\u5982\u7ec4\u6001\u738b\u3001WinCC\uff09<\/li>\n\n\n\n
        • \u9a8c\u8bc1 PLC \u7a0b\u5e8f\u903b\u8f91<\/li>\n\n\n\n
        • \u57f9\u8bad\u65b0\u5458\u5de5\uff08\u65e0\u9700\u771f\u5b9e\u8bbe\u5907\uff09<\/li>\n\n\n\n
        • \u5f00\u53d1\u9636\u6bb5\u6a21\u62df\u4ece\u7ad9\u54cd\u5e94<\/li>\n<\/ul>\n\n\n\n
          \u652f\u6301\u529f\u80fd\uff1a<\/strong><\/p>\n\n\n\n
            \n
          • \u6a21\u62df\u7ebf\u5708\u3001\u79bb\u6563\u8f93\u5165\u3001\u4fdd\u6301\u5bc4\u5b58\u5668\u3001\u8f93\u5165\u5bc4\u5b58\u5668<\/li>\n\n\n\n
          • \u81ea\u5b9a\u4e49\u521d\u59cb\u503c<\/li>\n\n\n\n
          • \u652f\u6301\u6279\u91cf\u8bbe\u7f6e\u5730\u5740\u8303\u56f4<\/li>\n\n\n\n
          • \u5b9e\u65f6\u663e\u793a\u4e3b\u7ad9\u8bf7\u6c42\u62a5\u6587<\/li>\n<\/ul>\n\n\n\n
            \uff083\uff09Modbus RTU\/TCP\/ASCII – \u534f\u8bae\u8be6\u89e3<\/h4>\n\n\n\n
            \u5c0f\u7a0b\u5e8f\u5bf9\u4e09\u79cd\u4f20\u8f93\u6a21\u5f0f\u90fd\u6709\u8be6\u7ec6\u8bf4\u660e\u548c\u5b9e\u6218\u793a\u4f8b\u3002<\/p>\n\n\n\n
            RTU vs ASCII \u5bf9\u6bd4\uff1a<\/strong><\/p>\n\n\n\n
            \u7279\u6027<\/th>RTU<\/th>ASCII<\/th><\/tr><\/thead>
            \u7f16\u7801\u65b9\u5f0f<\/td>\u4e8c\u8fdb\u5236<\/td>ASCII \u6587\u672c<\/td><\/tr>
            \u6821\u9a8c\u65b9\u5f0f<\/td>CRC16<\/td>LRC<\/td><\/tr>
            \u5e27\u957f\u5ea6<\/td>\u8f83\u77ed\uff08\u9ad8\u6548\uff09<\/td>\u7ea6\u4e3a RTU 2 \u500d<\/td><\/tr>
            \u5e27\u6807\u8bc6<\/td>3.5 \u5b57\u7b26\u9759\u9ed8\u95f4\u9694<\/td>“:” \u5f00\u5934 + CR LF \u7ed3\u5c3e<\/td><\/tr>
            \u9002\u7528\u573a\u666f<\/td>\u5927\u591a\u6570\u5de5\u4e1a\u8bbe\u5907<\/td>\u8001\u65e7\u8bbe\u5907\/\u8c03\u5236\u89e3\u8c03\u5668<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
            CRC16 \u7b97\u6cd5\u5b9e\u73b0\uff08\u6838\u5fc3\u4ee3\u7801\uff09\uff1a<\/strong><\/p>\n\n\n\n
            \/\/ MODBUS CRC-16 (\u4f4e\u5b57\u8282\u5728\u524d)\ncalcCRC16(bytes) {\n  let crc = 0xFFFF;\n  for (let i = 0; i < bytes.length; i++) {\n    crc ^= bytes[i];\n    for (let j = 0; j < 8; j++) {\n      if (crc & 0x0001) {\n        crc = (crc >> 1) ^ 0xA001;\n      } else {\n        crc >>= 1;\n      }\n    }\n  }\n  const lo = crc & 0xFF;\n  const hi = (crc >> 8) & 0xFF;\n  return lo.toString(16).toUpperCase().padStart(2, '0') + ' ' + \n         hi.toString(16).toUpperCase().padStart(2, '0');\n}\n<\/pre><\/div>\n\n\n\n
            LRC \u7b97\u6cd5\u5b9e\u73b0\uff1a<\/strong><\/p>\n\n\n\n
            \/\/ MODBUS ASCII LRC\ncalcLRC(bytes) {\n  let sum = 0;\n  for (let i = 0; i < bytes.length; i++) {\n    sum += bytes[i];\n  }\n  const lrc = ((~sum) + 1) & 0xFF;\n  return lrc.toString(16).toUpperCase().padStart(2, '0');\n}\n<\/pre><\/div>\n\n\n\n
            \n\n\n\n
            1.2 \u4e32\u53e3\u8c03\u8bd5\u52a9\u624b<\/h3>\n\n\n\n
            \u8fd9\u662f\u7b2c\u4e8c\u4e2a\u9ad8\u9891\u4f7f\u7528\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n
            \u6838\u5fc3\u7279\u6027\uff1a<\/strong><\/p>\n\n\n\n
              \n
            • \u4e09\u79cd\u8fde\u63a5\u65b9\u5f0f<\/strong>\uff1a\u84dd\u7259 \/ TCP \/ UDP<\/li>\n\n\n\n
            • \u5168\u53c2\u6570\u914d\u7f6e<\/strong>\uff1a\u6ce2\u7279\u7387\uff089600\/19200\/38400\/57600\/115200\uff09\u3001\u6570\u636e\u4f4d\u3001\u505c\u6b62\u4f4d\u3001\u6821\u9a8c\u4f4d<\/li>\n\n\n\n
            • \u6536\u53d1\u533a\u72ec\u7acb\u8bbe\u7f6e<\/strong>\uff1a\n
                \n
              • \u63a5\u6536\u533a\uff1aASCII\/HEX \u5207\u6362\u3001\u65f6\u95f4\u6233\u3001\u81ea\u52a8\u6362\u884c\u3001\u663e\u793a\u884c\u53f7\u3001\u81ea\u52a8\u6eda\u52a8<\/li>\n\n\n\n
              • \u53d1\u9001\u533a\uff1aASCII\/HEX \u5207\u6362\u3001\u81ea\u52a8\u89e3\u6790\u8f6c\u4e49\u7b26\uff08\\r\\n \\t\uff09\u3001\u5faa\u73af\u53d1\u9001<\/li>\n<\/ul>\n<\/li>\n\n\n\n
              • \u56db\u79cd\u6821\u9a8c\u65b9\u5f0f<\/strong>\uff1aCRC-16\u3001\u7d2f\u52a0\u548c\u3001LRC\u3001\u5f02\u6216\u6821\u9a8c<\/li>\n\n\n\n
              • \u5b9e\u65f6\u7edf\u8ba1<\/strong>\uff1aRX\/TX \u5b57\u8282\u6570\u3001\u4e00\u952e\u590d\u4f4d<\/li>\n<\/ul>\n\n\n\n
                \u5b9e\u6218\u6848\u4f8b 1\uff1a\u84dd\u7259\u8c03\u8bd5 PACO \u8bbe\u5907<\/strong><\/p>\n\n\n\n
                PACO \u662f\u4e00\u6b3e\u5e38\u7528\u7684\u84dd\u7259 485 \u9002\u914d\u5668\uff0c\u5c0f\u7a0b\u5e8f\u5bf9\u5176\u505a\u4e86\u6df1\u5ea6\u4f18\u5316\u3002<\/p>\n\n\n\n
                \/\/ \u6784\u5efa PACO \u547d\u4ee4 (80 \u5b57\u8282\u56fa\u5b9a\u957f\u5ea6)\nbuildPacoCommand(cmdType, param = '') {\n  let cmd = '';\n  switch(cmdType) {\n    case 'read485':\n      cmd = 'PACO-Setting-Code-PACO-FXY-BT-485-R-485Setting.';\n      break;\n    case 'write485':\n      cmd = `PACO-Setting-Code-PACO-FXY-BT-485-W-485Setting:${param}.`;\n      break;\n    case 'readName':\n      cmd = 'PACO-Setting-Code-               -R-PartNumber.';\n      break;\n    case 'writeName':\n      cmd = `PACO-Setting-Code-PACO-FXY-BT-485-W-DeviceName:${param}.`;\n      break;\n  }\n  \/\/ \u8865\u9f50\u5230 76 \u5b57\u7b26\uff0c\u672b\u5c3e\u52a0 PACO\n  const paddedCmd = cmd.padEnd(76, ' ') + 'PACO';\n  return paddedCmd;\n}\n<\/pre><\/div>\n\n\n\n
                \u53ef\u4ee5\u8bfb\u5199 PACO \u8bbe\u5907\u7684\uff1a<\/strong><\/p>\n\n\n\n
                  \n
                • 485 \u53c2\u6570\uff08\u6ce2\u7279\u7387\/\u6570\u636e\u4f4d\/\u505c\u6b62\u4f4d\/\u6821\u9a8c\u4f4d\uff09<\/li>\n\n\n\n
                • \u8bbe\u5907\u540d\u79f0\uff08\u6700\u5927 7 \u5b57\u7b26\uff09<\/li>\n<\/ul>\n\n\n\n
                  \u5b9e\u6218\u6848\u4f8b 2\uff1aTCP \u7aef\u53e3\u9650\u5236\u95ee\u9898<\/strong><\/p>\n\n\n\n
                  \u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5bf9\u7aef\u53e3\u6709\u4e25\u683c\u9650\u5236\uff0c\u8fd9\u662f\u4e00\u4e2a\u5927\u5751\u3002<\/p>\n\n\n\n
                  \/\/ \u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u7aef\u53e3\u9650\u5236\u68c0\u67e5\nconst forbiddenPorts = [1099, 1433, 1521, 1719, 1720, 1723, \n  2049, 2375, 3128, 3306, 3389, 3659, 4045, 5060, 5061, \n  5432, 5984, 6379, 6000, 6566, 7001, 7002, 8443, 8888, \n  9200, 9300, 10051, 10080, 11211, 27017, 27018, 27019];\n\nif (portNum < 1024) {\n  \/\/ \u7981\u6b62\u8fde\u63a5 1024 \u4ee5\u4e0b\u7aef\u53e3\uff08\u5982 502\uff09\n  uni.showModal({ \n    title: '\u7aef\u53e3\u53d7\u9650', \n    content: '\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u7981\u6b62\u8fde\u63a5 1024 \u4ee5\u4e0b\u7aef\u53e3\uff0c\u8bf7\u4f7f\u7528 APP \u7248\u672c\u6216\u66f4\u6362\u7aef\u53e3', \n    showCancel: false \n  });\n  return;\n}\n\nif (portNum >= 8000 && portNum <= 8100) {\n  \/\/ \u7981\u6b62\u8fde\u63a5 8000-8100 \u7aef\u53e3\n  uni.showModal({ \n    title: '\u7aef\u53e3\u53d7\u9650', \n    content: '\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u7981\u6b62\u8fde\u63a5 8000-8100 \u7aef\u53e3\uff0c\u8bf7\u66f4\u6362\u7aef\u53e3', \n    showCancel: false \n  });\n  return;\n}\n<\/pre><\/div>\n\n\n\n
                  \u89e3\u51b3\u65b9\u6848\uff1a<\/strong>
                  \u5728\u8def\u7531\u5668\u505a\u7aef\u53e3\u8f6c\u53d1\uff0c\u6bd4\u5982\u5916\u90e8 1502 \u2192 \u5185\u90e8 502\u3002<\/p>\n\n\n\n
                  \n\n\n\n
                  1.3 \u4e13\u4e1a\u8ba1\u7b97\u5668\u7cfb\u5217<\/h3>\n\n\n\n
                  \u8fd9\u90e8\u5206\u662f\u6211\u82b1\u5fc3\u601d\u6700\u591a\u7684\uff0c\u4e5f\u662f\u6700\u80fd\u4f53\u73b0”\u7ecf\u9a8c\u4ef7\u503c”\u7684\u5730\u65b9\u3002<\/p>\n\n\n\n
                  \uff081\uff09PID \u81ea\u6574\u5b9a\u8ba1\u7b97\u5668<\/h4>\n\n\n\n
                  PID \u53c2\u6570\u6574\u5b9a\u662f\u81ea\u52a8\u63a7\u5236\u7cfb\u7edf\u7684\u6838\u5fc3\uff0c\u4e5f\u662f\u5f88\u591a\u5de5\u7a0b\u5e08\u7684\u75db\u70b9\u3002<\/p>\n\n\n\n
                  \u652f\u6301\u7684\u6574\u5b9a\u65b9\u6cd5\uff1a<\/strong><\/p>\n\n\n\n
                  \u65b9\u6cd5<\/th>\u9002\u7528\u573a\u666f<\/th>\u7279\u70b9<\/th><\/tr><\/thead>
                  \u9f50\u683c\u52d2 – \u5c3c\u79d1\u5c14\u65af\u7b2c\u4e00\u6cd5<\/td>\u9636\u8dc3\u54cd\u5e94\u5b9e\u9a8c<\/td>\u7ecf\u5178\u65b9\u6cd5\uff0c\u9002\u7528\u9762\u5e7f<\/td><\/tr>
                  \u9f50\u683c\u52d2 – \u5c3c\u79d1\u5c14\u65af\u7b2c\u4e8c\u6cd5<\/td>\u4e34\u754c\u632f\u8361\u6cd5<\/td>\u9700\u8981\u627e\u5230\u4e34\u754c\u589e\u76ca<\/td><\/tr>
                  Cohen-Coon<\/td>\u5927\u6ede\u540e\u7cfb\u7edf<\/td>\u5bf9\u6ede\u540e\u7cfb\u7edf\u6548\u679c\u597d<\/td><\/tr>
                  IMC\uff08\u5185\u6a21\u63a7\u5236\uff09<\/td>\u9ad8\u6027\u80fd\u8981\u6c42<\/td>\u53c2\u6570\u53ef\u8c03\uff0c\u7075\u6d3b\u6027\u9ad8<\/td><\/tr>
                  \u6781\u70b9\u914d\u7f6e<\/td>\u7279\u5b9a\u52a8\u6001\u54cd\u5e94<\/td>\u9700\u8981\u7cfb\u7edf\u6a21\u578b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                  \u8f93\u5165\u53c2\u6570\uff1a<\/strong><\/p>\n\n\n\n
                    \n
                  • \u5ef6\u8fdf\u65f6\u95f4 L\uff08\u79d2\uff09<\/li>\n\n\n\n
                  • \u65f6\u95f4\u5e38\u6570 T\uff08\u79d2\uff09<\/li>\n\n\n\n
                  • \u8fc7\u7a0b\u589e\u76ca K<\/li>\n\n\n\n
                  • \u03bb \u53c2\u6570\uff08IMC \u4e13\u7528\uff09<\/li>\n<\/ul>\n\n\n\n
                    \u8f93\u51fa\u7ed3\u679c\uff1a<\/strong><\/p>\n\n\n\n
                      \n
                    • \u6bd4\u4f8b\u589e\u76ca Kp<\/li>\n\n\n\n
                    • \u79ef\u5206\u65f6\u95f4 Ti<\/li>\n\n\n\n
                    • \u5fae\u5206\u65f6\u95f4 Td<\/li>\n\n\n\n
                    • \u63a8\u8350\u914d\u7f6e\uff08\u5982\u63a7\u5236\u5668\u7c7b\u578b\u3001\u63a7\u5236\u53d8\u91cf\u9009\u62e9\uff09<\/li>\n<\/ul>\n\n\n\n
                      \u6838\u5fc3\u7b97\u6cd5\uff08\u9f50\u683c\u52d2 – \u5c3c\u79d1\u5c14\u65af\u7b2c\u4e00\u6cd5\uff09\uff1a<\/strong><\/p>\n\n\n\n
                      \/\/ Ziegler-Nichols \u7b2c\u4e00\u6cd5\uff08\u9636\u8dc3\u54cd\u5e94\u6cd5\uff09\nzieglerNichols1st(L, T, K) {\n  \/\/ Kp = 1.2 * T \/ (K * L)\n  \/\/ Ti = 2 * L\n  \/\/ Td = 0.5 * L\n  const kp = 1.2 * T \/ (K * L);\n  const ti = 2 * L;\n  const td = 0.5 * L;\n  return { kp, ti, td };\n}\n<\/pre><\/div>\n\n\n\n
                      \u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
                      \u67d0\u6e29\u5ea6\u63a7\u5236\u7cfb\u7edf\uff0c\u901a\u8fc7\u9636\u8dc3\u54cd\u5e94\u5b9e\u9a8c\u5f97\u5230\uff1a<\/p>\n\n\n\n
                        \n
                      • \u5ef6\u8fdf\u65f6\u95f4 L = 2.5s<\/li>\n\n\n\n
                      • \u65f6\u95f4\u5e38\u6570 T = 8.0s<\/li>\n\n\n\n
                      • \u8fc7\u7a0b\u589e\u76ca K = 1.0<\/li>\n<\/ul>\n\n\n\n
                        \u4ee3\u5165\u516c\u5f0f\u8ba1\u7b97\uff1a<\/p>\n\n\n\n
                          \n
                        • Kp = 1.2 \u00d7 8.0 \/ (1.0 \u00d7 2.5) = 3.84<\/li>\n\n\n\n
                        • Ti = 2 \u00d7 2.5 = 5.0s<\/li>\n\n\n\n
                        • Td = 0.5 \u00d7 2.5 = 1.25s<\/li>\n<\/ul>\n\n\n\n
                          \u5c06\u8fd9\u4e09\u4e2a\u53c2\u6570\u8f93\u5165 PID \u63a7\u5236\u5668\uff0c\u7cfb\u7edf\u54cd\u5e94\u5feb\u901f\u4e14\u8d85\u8c03\u5c0f\u3002<\/p>\n\n\n\n
                          \uff082\uff09\u4f20\u611f\u5668\u6807\u5b9a\u8ba1\u7b97\u5668<\/h4>\n\n\n\n
                          \u4f20\u611f\u5668\u6807\u5b9a\u662f\u73b0\u573a\u8c03\u8bd5\u7684\u5e38\u89c4\u5de5\u4f5c\uff0c\u4f46\u624b\u7b97\u5bb9\u6613\u51fa\u9519\u3002<\/p>\n\n\n\n
                          \u652f\u6301\u56db\u79cd\u6a21\u5f0f\uff1a<\/strong><\/p>\n\n\n\n
                          \u2460 \u7ebf\u6027\u6807\u5b9a\uff08\u6700\u5e38\u7528\uff09<\/strong><\/p>\n\n\n\n
                          \u9002\u7528\u4e8e 4-20mA\u30010-10V \u7b49\u7ebf\u6027\u4f20\u611f\u5668\u3002<\/p>\n\n\n\n
                          \u6807\u5b9a\u516c\u5f0f\uff1aY = kX + b\n\n\u5176\u4e2d\uff1a\nk = (Y2 - Y1) \/ (X2 - X1)  \/\/ \u659c\u7387\nb = Y1 - k * X1            \/\/ \u622a\u8ddd\n<\/pre><\/div>\n\n\n\n
                          \u5feb\u901f\u6362\u7b97\u8868\uff1a<\/strong><\/p>\n\n\n\n
                          \u767e\u5206\u6bd4<\/th>\u4fe1\u53f7\u503c (mA)<\/th>\u5de5\u7a0b\u503c (\u2103)<\/th><\/tr><\/thead>
                          0%<\/td>4.00<\/td>0.00<\/td><\/tr>
                          25%<\/td>8.00<\/td>25.00<\/td><\/tr>
                          50%<\/td>12.00<\/td>50.00<\/td><\/tr>
                          75%<\/td>16.00<\/td>75.00<\/td><\/tr>
                          100%<\/td>20.00<\/td>100.00<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                          \u2461 \u591a\u70b9\u62df\u5408<\/strong><\/p>\n\n\n\n
                          \u9002\u7528\u4e8e\u975e\u7ebf\u6027\u4f20\u611f\u5668\uff08\u5982\u70ed\u7535\u5076\u3001\u70ed\u7535\u963b\uff09\u3002<\/p>\n\n\n\n
                          \u652f\u6301\uff1a<\/p>\n\n\n\n
                            \n
                          • \u4e8c\u6b21\u66f2\u7ebf\u62df\u5408<\/li>\n\n\n\n
                          • \u4e09\u6b21\u66f2\u7ebf\u62df\u5408<\/li>\n\n\n\n
                          • \u6700\u5c0f\u4e8c\u4e58\u6cd5<\/li>\n<\/ul>\n\n\n\n
                            \u2462 \u6e29\u5ea6\u4e13\u7528\u6a21\u5f0f<\/strong><\/p>\n\n\n\n
                            \u5185\u7f6e\u5e38\u7528\u6e29\u5ea6\u4f20\u611f\u5668\u5206\u5ea6\u8868\uff1a<\/p>\n\n\n\n
                              \n
                            • PT100 \u70ed\u7535\u963b<\/li>\n\n\n\n
                            • K \u578b\u70ed\u7535\u5076<\/li>\n\n\n\n
                            • J \u578b\u70ed\u7535\u5076<\/li>\n\n\n\n
                            • E \u578b\u70ed\u7535\u5076<\/li>\n\n\n\n
                            • T \u578b\u70ed\u7535\u5076<\/li>\n<\/ul>\n\n\n\n
                              \u2463 \u8bef\u5dee\u5206\u6790<\/strong><\/p>\n\n\n\n
                              \u8ba1\u7b97\uff1a<\/p>\n\n\n\n
                                \n
                              • \u7edd\u5bf9\u8bef\u5dee<\/li>\n\n\n\n
                              • \u76f8\u5bf9\u8bef\u5dee<\/li>\n\n\n\n
                              • \u6ee1\u91cf\u7a0b\u8bef\u5dee<\/li>\n\n\n\n
                              • \u7ebf\u6027\u5ea6<\/li>\n<\/ul>\n\n\n\n
                                \u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
                                \u67d0\u538b\u529b\u53d8\u9001\u5668\uff0c\u91cf\u7a0b 0-10bar\uff0c\u8f93\u51fa 4-20mA\u3002<\/p>\n\n\n\n
                                \u6807\u5b9a\u70b9\u8bbe\u7f6e\uff1a<\/p>\n\n\n\n
                                  \n
                                • \u4f4e\u70b9\uff1a4mA \u2192 0bar<\/li>\n\n\n\n
                                • \u9ad8\u70b9\uff1a20mA \u2192 10bar<\/li>\n<\/ul>\n\n\n\n
                                  \u8ba1\u7b97\u7ed3\u679c\uff1a<\/p>\n\n\n\n
                                    \n
                                  • k = (10 – 0) \/ (20 – 4) = 0.625<\/li>\n\n\n\n
                                  • b = 0 – 0.625 \u00d7 4 = -2.5<\/li>\n<\/ul>\n\n\n\n
                                    \u6807\u5b9a\u516c\u5f0f\uff1aY = 0.625X – 2.5<\/strong><\/p>\n\n\n\n
                                    \u9a8c\u8bc1\uff1a<\/p>\n\n\n\n
                                      \n
                                    • \u8f93\u5165 12mA \u2192 Y = 0.625 \u00d7 12 – 2.5 = 5.0bar \u2713<\/li>\n\n\n\n
                                    • \u8f93\u5165 20mA \u2192 Y = 0.625 \u00d7 20 – 2.5 = 10.0bar \u2713<\/li>\n<\/ul>\n\n\n\n
                                      \uff083\uff09\u6821\u9a8c\u8ba1\u7b97\u5de5\u5177<\/h4>\n\n\n\n
                                      \u8fd9\u4e2a\u5de5\u5177\u96c6\u6210\u4e86 10+ \u79cd\u5de5\u4e1a\u901a\u4fe1\u534f\u8bae\u5e38\u7528\u7684\u6821\u9a8c\u7b97\u6cd5\u3002<\/p>\n\n\n\n
                                      \u652f\u6301\u529f\u80fd\uff1a<\/strong><\/p>\n\n\n\n
                                      \u6821\u9a8c\u7c7b\u578b<\/th>\u8bf4\u660e<\/th>\u9002\u7528\u573a\u666f<\/th><\/tr><\/thead>
                                      MODBUS RTU CRC-16<\/td>16 \u4f4d\u5faa\u73af\u5197\u4f59\u6821\u9a8c<\/td>Modbus RTU \u534f\u8bae<\/td><\/tr>
                                      MODBUS ASCII LRC<\/td>\u7eb5\u5411\u5197\u4f59\u6821\u9a8c<\/td>Modbus ASCII \u534f\u8bae<\/td><\/tr>
                                      \u6821\u9a8c\u548c\uff0816 \u4f4d\uff09<\/td>\u7d2f\u52a0\u548c\u53d6\u4f4e 16 \u4f4d<\/td>\u7b80\u5355\u534f\u8bae<\/td><\/tr>
                                      \u5f02\u6216\u6821\u9a8c\uff088 \u4f4d\uff09<\/td>\u6240\u6709\u5b57\u8282\u5f02\u6216<\/td>\u81ea\u5b9a\u4e49\u534f\u8bae<\/td><\/tr>
                                      \u897f\u95e8\u5b50 S7 \u6821\u9a8c\u548c<\/td>S7 \u901a\u4fe1\u534f\u8bae\u4e13\u7528<\/td>\u897f\u95e8\u5b50 PLC<\/td><\/tr>
                                      \u4e09\u83f1 FX \u6c42\u548c\u6821\u9a8c<\/td>\u4e09\u83f1\u901a\u4fe1\u534f\u8bae<\/td>\u4e09\u83f1 PLC<\/td><\/tr>
                                      BCC \u6821\u9a8c<\/td>\u5757\u6821\u9a8c\u5b57\u7b26<\/td>\u4e32\u53e3\u901a\u4fe1<\/td><\/tr>
                                      IP\/TCP \u6821\u9a8c\u548c<\/td>\u7f51\u7edc\u534f\u8bae\u6821\u9a8c<\/td>TCP\/IP \u6808<\/td><\/tr>
                                      \u6b27\u59c6\u9f99 FINS FCS<\/td>FINS \u534f\u8bae\u6821\u9a8c<\/td>\u6b27\u59c6\u9f99 PLC<\/td><\/tr>
                                      CAN CRC<\/td>CAN \u603b\u7ebf\u6821\u9a8c<\/td>\u6c7d\u8f66\u7535\u5b50<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                                      \u4f7f\u7528\u65b9\u6cd5\uff1a<\/strong><\/p>\n\n\n\n
                                        \n
                                      1. \u9009\u62e9\u6821\u9a8c\u7c7b\u578b<\/li>\n\n\n\n
                                      2. \u8f93\u5165\u539f\u59cb HEX \u6570\u636e<\/li>\n\n\n\n
                                      3. \u81ea\u52a8\u8ba1\u7b97\u6821\u9a8c\u7801<\/li>\n\n\n\n
                                      4. \uff08\u53ef\u9009\uff09\u9644\u52a0\u6821\u9a8c\u7801\u540e\u53d1\u9001<\/li>\n<\/ol>\n\n\n\n
                                        \u5b9e\u6218\u6848\u4f8b\uff1aModbus RTU \u547d\u4ee4<\/strong><\/p>\n\n\n\n
                                        \u539f\u59cb\u6570\u636e\uff1a01 03 00 00 00 01<\/code><\/p>\n\n\n\n
                                        \u8ba1\u7b97 CRC-16\uff1a<\/p>\n\n\n\n
                                          \n
                                        • \u8f93\u5165 6 \u5b57\u8282<\/li>\n\n\n\n
                                        • \u8ba1\u7b97\u5f97 CRC = 0x840A<\/li>\n\n\n\n
                                        • \u4f4e\u5b57\u8282\u5728\u524d\uff1a84 0A<\/code><\/li>\n<\/ul>\n\n\n\n
                                          \u5b8c\u6574\u62a5\u6587\uff1a01 03 00 00 00 01 84 0A<\/code><\/p>\n\n\n\n
                                          \n\n\n\n
                                          1.4 \u5176\u4ed6\u4e13\u4e1a\u5de5\u5177<\/h3>\n\n\n\n
                                          \u5c0f\u7a0b\u5e8f\u8fd8\u6709 15+ \u4e13\u4e1a\u5de5\u5177\uff0c\u8fd9\u91cc\u7b80\u5355\u5217\u4e3e\uff1a<\/p>\n\n\n\n
                                          \uff081\uff09PLC \u8c03\u8bd5\u5de5\u5177<\/h4>\n\n\n\n
                                            \n
                                          • Q06 \u5f00\u5173\u8c03\u8bd5\u52a9\u624b<\/strong>\uff1a\u4e13\u95e8\u9488\u5bf9 Q06 \u7cfb\u5217\u5f00\u5173\u7684\u8c03\u8bd5\u5de5\u5177<\/li>\n\n\n\n
                                          • X160 \u8c03\u8bd5\u5de5\u5177<\/strong>\uff1aX160 \u8bbe\u5907\u4e13\u7528\u8c03\u8bd5<\/li>\n\n\n\n
                                          • ZLAN \u8bbe\u5907\u7ba1\u7406\u5668<\/strong>\uff1a\u6709\u4eba\u7269\u8054\u7f51 ZLAN \u7cfb\u5217\u8bbe\u5907\u7ba1\u7406<\/li>\n<\/ul>\n\n\n\n
                                            \uff082\uff09\u6267\u884c\u5668\u8c03\u8bd5<\/h4>\n\n\n\n
                                              \n
                                            • \u8c03\u5149\u8c03\u8bd5\u52a9\u624b<\/strong>\uff1a0-10V\/PWM \u8c03\u5149\u5668\u8c03\u8bd5<\/li>\n\n\n\n
                                            • 8 \u8def\u7ee7\u7535\u5668\u63a7\u5236<\/strong>\uff1a\u591a\u8def\u7ee7\u7535\u5668\u6279\u91cf\u63a7\u5236<\/li>\n\n\n\n
                                            • \u4f3a\u670d\u8109\u51b2\u8ba1\u7b97<\/strong>\uff1a\u4f3a\u670d\u7535\u673a\u8109\u51b2\u5f53\u91cf\u8ba1\u7b97<\/li>\n<\/ul>\n\n\n\n
                                              \uff083\uff09\u53d8\u9891\u5668\u8c03\u8bd5<\/h4>\n\n\n\n
                                                \n
                                              • \u53d8\u9891\u5668\u8c03\u8bd5\u5de5\u5177<\/strong>\uff1a\u652f\u6301\u4e3b\u6d41\u53d8\u9891\u5668\u53c2\u6570\u8bbe\u7f6e<\/li>\n<\/ul>\n\n\n\n
                                                \uff084\uff09\u5176\u4ed6\u8ba1\u7b97\u5668<\/h4>\n\n\n\n
                                                  \n
                                                • \u538b\u529b\u53d8\u9001\u5668\u8c03\u8bd5<\/strong>\uff1a\u5dee\u538b\/\u538b\u529b\u53d8\u9001\u5668\u8ba1\u7b97<\/li>\n\n\n\n
                                                • \u8fdc\u7a0b\u534f\u52a9\u5de5\u5177<\/strong>\uff1a\u5b9e\u65f6\u5171\u4eab\u8c03\u8bd5\u753b\u9762<\/li>\n<\/ul>\n\n\n\n
                                                  \n\n\n\n
                                                  \u4e8c\u3001\u6280\u672f\u67b6\u6784\uff1a\u5c0f\u7a0b\u5e8f\u4e5f\u80fd\u505a\u4e13\u4e1a\u5de5\u5177<\/h2>\n\n\n\n
                                                  2.1 \u6280\u672f\u9009\u578b<\/h3>\n\n\n\n
                                                  \u524d\u7aef\u6846\u67b6\uff1a<\/strong> uni-app<\/p>\n\n\n\n
                                                  \u9009\u62e9\u7406\u7531\uff1a<\/p>\n\n\n\n
                                                    \n
                                                  • \u4e00\u5957\u4ee3\u7801\u7f16\u8bd1\u5230\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u3001H5\u3001APP<\/li>\n\n\n\n
                                                  • \u4e30\u5bcc\u7684\u7ec4\u4ef6\u5e93<\/li>\n\n\n\n
                                                  • \u826f\u597d\u7684\u84dd\u7259\/TCP\/UDP API \u652f\u6301<\/li>\n<\/ul>\n\n\n\n
                                                    UI \u6846\u67b6\uff1a<\/strong> colorUI + \u81ea\u5b9a\u4e49\u7ec4\u4ef6<\/p>\n\n\n\n
                                                    \u6570\u636e\u5b58\u50a8\uff1a<\/strong><\/p>\n\n\n\n
                                                      \n
                                                    • \u672c\u5730\u5b58\u50a8\uff1auni.setStorageSync<\/li>\n\n\n\n
                                                    • \u8fde\u63a5\u5386\u53f2\u8bb0\u5f55<\/li>\n\n\n\n
                                                    • \u9879\u76ee\u914d\u7f6e\u4fdd\u5b58<\/li>\n<\/ul>\n\n\n\n
                                                      2.2 \u6838\u5fc3\u6280\u672f\u96be\u70b9<\/h3>\n\n\n\n
                                                      \uff081\uff09\u84dd\u7259 BLE \u8fde\u63a5<\/h4>\n\n\n\n
                                                      \u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u7684\u84dd\u7259 API \u6709\u4e00\u4e9b\u9650\u5236\uff0c\u9700\u8981\u7279\u6b8a\u5904\u7406\u3002<\/p>\n\n\n\n
                                                      \u96be\u70b9 1\uff1a\u670d\u52a1\u7279\u5f81\u503c\u67e5\u627e<\/strong><\/p>\n\n\n\n
                                                      \u4e0d\u540c\u84dd\u7259\u6a21\u5757\u7684 Service UUID \u548c Characteristic UUID \u4e0d\u540c\uff0c\u9700\u8981\u667a\u80fd\u67e5\u627e\u3002<\/p>\n\n\n\n
                                                      \/\/ \u904d\u5386\u6240\u6709\u670d\u52a1\u67e5\u627e\u53ef\u5199\u7279\u5f81\nfindWritableCharacteristic() {\n  if (this.currentServiceIndex >= this.allServices.length) {\n    \/\/ \u6240\u6709\u670d\u52a1\u90fd\u904d\u5386\u5b8c\u4e86\n    if (this.foundWriteChar) {\n      this.finishBluetoothConnection();\n    } else {\n      uni.showToast({ title: '\u672a\u627e\u5230\u53ef\u5199\u7279\u5f81', icon: 'none' });\n    }\n    return;\n  }\n\n  const service = this.allServices[this.currentServiceIndex];\n  \n  uni.getBLEDeviceCharacteristics({\n    deviceId: this.connectedDeviceId,\n    serviceId: service.uuid,\n    success: (res) => {\n      const characteristics = res.characteristics;\n      \n      \/\/ \u67e5\u627e\u7b56\u7565\uff1a\n      \/\/ 1. \u4f18\u5148\u627e\u540c\u65f6\u652f\u6301 write \u548c notify \u7684\u7279\u5f81\uff08\u53cc\u5411\u901a\u4fe1\uff09\n      \/\/ 2. \u5176\u6b21\u627e\u53ea\u652f\u6301 write \u7684\u7279\u5f81\n      \/\/ 3. \u6700\u540e\u627e\u652f\u6301 writeNoResponse \u7684\u7279\u5f81\n      let writeChar = characteristics.find(c =>\n        c.properties.write === true &&\n        (c.properties.notify === true || c.properties.indicate === true)\n      );\n      \n      if (!writeChar) {\n        writeChar = characteristics.find(c => c.properties.write === true);\n      }\n      \n      if (!writeChar) {\n        writeChar = characteristics.find(c => c.properties.writeNoResponse === true);\n      }\n      \n      if (writeChar) {\n        this.writeCharacteristicId = writeChar.uuid;\n        this.foundWriteChar = true;\n        this.finishBluetoothConnection();\n        return;\n      }\n      \n      \/\/ \u5f53\u524d\u670d\u52a1\u672a\u627e\u5230\uff0c\u7ee7\u7eed\u4e0b\u4e00\u4e2a\n      this.currentServiceIndex++;\n      this.findWritableCharacteristic();\n    }\n  });\n}\n<\/pre><\/div>\n\n\n\n
                                                      \u96be\u70b9 2\uff1aPACO \u8bbe\u5907 80 \u5b57\u8282\u5355\u5305\u53d1\u9001<\/strong><\/p>\n\n\n\n
                                                      PACO \u8bbe\u5907\u9700\u8981\u4e00\u6b21\u53d1\u9001 80 \u5b57\u8282\uff0c\u4f46 BLE \u9ed8\u8ba4 MTU \u53ea\u6709 20 \u5b57\u8282\u3002<\/p>\n\n\n\n
                                                      \u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n\n\n\n
                                                      \/\/ \u8bbe\u7f6e BLE MTU\uff08\u6700\u5927\u4f20\u8f93\u5355\u5143\uff09\nsetBLEMTU(deviceId, callback) {\n  if (wx.setBLEMTU) {\n    wx.setBLEMTU({\n      deviceId: deviceId,\n      mtu: 512,  \/\/ \u8bbe\u7f6e\u4e3a 512 \u5b57\u8282\n      success: (res) => {\n        console.log('MTU \u8bbe\u7f6e\u6210\u529f');\n        callback && callback();\n      },\n      fail: (err) => {\n        console.error('MTU \u8bbe\u7f6e\u5931\u8d25', err);\n        callback && callback();\n      }\n    });\n  } else {\n    callback && callback();\n  }\n}\n<\/pre><\/div>\n\n\n\n
                                                      \uff082\uff09TCP Socket \u901a\u4fe1<\/h4>\n\n\n\n
                                                      \u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u7684 TCP Socket API \u662f\u5f02\u6b65\u7684\uff0c\u9700\u8981\u5904\u7406\u8fde\u63a5\u8d85\u65f6\u3001\u6570\u636e\u5206\u5305\u3001\u7c98\u5305\u7b49\u95ee\u9898\u3002<\/p>\n\n\n\n
                                                      \u8fde\u63a5\u8d85\u65f6\u5904\u7406\uff1a<\/strong><\/p>\n\n\n\n
                                                      const connTimeout = setTimeout(() => {\n  if (!self.isConnected) {\n    uni.hideLoading();\n    uni.showToast({ title: '\u8fde\u63a5\u8d85\u65f6', icon: 'none' });\n    try { tcp.close(); } catch(e) {}\n    self.tcpSocket = null;\n  }\n}, 8000);  \/\/ 8 \u79d2\u8d85\u65f6\n\ntcp.onConnect(function(res) {\n  clearTimeout(connTimeout);\n  self.isConnected = true;\n  \/\/ ...\n});\n<\/pre><\/div>\n\n\n\n
                                                      \u6570\u636e\u5206\u5305\u5904\u7406\uff1a<\/strong><\/p>\n\n\n\n
                                                      handleTcpResponse(hexData) {\n  const hex = hexData.replace(\/\\s+\/g, '');\n  \n  \/\/ \u5c06\u63a5\u6536\u5230\u7684\u6570\u636e\u6dfb\u52a0\u5230\u7f13\u51b2\u533a\n  for (let i = 0; i < hex.length; i += 2) {\n    this.receiveBuffer.push(parseInt(hex.substr(i, 2), 16));\n  }\n\n  \/\/ \u4f7f\u7528 MBAP \u5934\u7684 Length \u5b57\u6bb5\u5224\u65ad\u5e27\u5b8c\u6574\u6027\n  while (this.receiveBuffer.length >= 7) {\n    const mbapLength = (this.receiveBuffer[4] << 8) | this.receiveBuffer[5];\n    const totalFrameLength = 6 + mbapLength;\n\n    if (this.receiveBuffer.length >= totalFrameLength) {\n      \/\/ \u63d0\u53d6\u5b8c\u6574\u7684\u4e00\u5e27\n      const frame = this.receiveBuffer.splice(0, totalFrameLength);\n      this.parseModbusTcpResponse(frame);\n    } else {\n      \/\/ \u6570\u636e\u4e0d\u5b8c\u6574\uff0c\u7b49\u5f85\u66f4\u591a\u6570\u636e\n      break;\n    }\n  }\n}\n<\/pre><\/div>\n\n\n\n
                                                      \uff083\uff09\u5927\u6570\u636e\u5904\u7406<\/h4>\n\n\n\n
                                                      \u4e32\u53e3\u8c03\u8bd5\u65f6\uff0c\u5982\u679c\u957f\u65f6\u95f4\u8fd0\u884c\uff0c\u4f1a\u4ea7\u751f\u5927\u91cf\u6570\u636e\u3002<\/p>\n\n\n\n
                                                      \u4f18\u5316\u7b56\u7565\uff1a<\/strong><\/p>\n\n\n\n
                                                      \/\/ \u6d88\u606f\u7f13\u51b2\u533a\u7ba1\u7406\nmaxMessageCount: 800,  \/\/ \u6700\u591a\u4fdd\u5b58 800 \u6761\nmaxVisibleMessageChars: 240,  \/\/ \u6bcf\u6761\u6700\u591a\u663e\u793a 240 \u5b57\u7b26\n\ntrimMessageBuffer() {\n  const maxTotalChars = this.maxMessageCount * this.maxVisibleMessageChars * 2;\n  \n  while (this.messages.length > this.maxMessageCount || \n         this.totalMessageChars > maxTotalChars) {\n    const removed = this.messages.shift();\n    if (removed && removed.data) {\n      this.totalMessageChars -= removed.data.length;\n    }\n  }\n}\n\n\/\/ \u8d85\u957f\u6d88\u606f\u81ea\u52a8\u622a\u65ad\uff0c\u652f\u6301\u5c55\u5f00\/\u6536\u8d77\nisMessageTruncated(msg) {\n  return !!(msg && msg.data && \n            msg.data.length > this.maxVisibleMessageChars);\n}\n\ngetDisplayMessage(msg) {\n  if (!msg || !msg.data) return '';\n  if (msg.expanded || !this.isMessageTruncated(msg)) {\n    return msg.data;\n  }\n  return msg.data.slice(0, this.maxVisibleMessageChars) + '\u2026';\n}\n<\/pre><\/div>\n\n\n\n
                                                      \n\n\n\n
                                                      \u4e09\u3001\u8bbe\u8ba1\u7406\u5ff5\uff1a\u5de5\u7a0b\u5e08\u61c2\u5de5\u7a0b\u5e08<\/h2>\n\n\n\n
                                                      3.1 Win7 \u98ce\u683c\u754c\u9762<\/h3>\n\n\n\n
                                                      \u5f88\u591a\u4eba\u95ee\u4e3a\u4ec0\u4e48\u7528 Win7 \u98ce\u683c\uff1f<\/p>\n\n\n\n
                                                      \u56e0\u4e3a \u719f\u6089<\/strong>\u3002<\/p>\n\n\n\n
                                                      \u5927\u591a\u6570\u5de5\u4e1a\u5de5\u7a0b\u5e08\u5929\u5929\u5bf9\u7740\u7535\u8111\uff0cWin7 \u7684\u754c\u9762\u662f\u6700\u719f\u6089\u7684\u3002\u770b\u5230\u8fd9\u79cd\u98ce\u683c\uff0c\u5c31\u6709”\u4e13\u4e1a\u5de5\u5177”\u7684\u611f\u89c9\u3002<\/p>\n\n\n\n
                                                      \u8bbe\u8ba1\u7ec6\u8282\uff1a<\/strong><\/p>\n\n\n\n