要求：

PC通過網線采集S7-200SMART數據，通過PC端部署的node-red,與云服務器部署的node-red通過MQTT通信，并將數據在本地或外網界面顯示。

準備：

node.js

阿里云服務器

PC

參考：Node-red學習第8篇--關于function節點的詳細介紹_Enl0ve的博客-CSDN博客_function node

JSON對象使用變量作為鍵名_lihefei_coder的博客-CSDN博客_json 變量

1-阿里云服務器端部署的node-red

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2- PC端部署的NODE-RED

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"4fe48dc8aa7b2968","type": "ui_group","name": "點動操作","tab": "6dd062cb1b09a3af","order": 3,"disp": true,"width": "6","collapse": false,"className": ""},{"id": "625ff6e7b6bfef8b","type": "ui_group","name": "定位操作","tab": "6dd062cb1b09a3af","order": 5,"disp": true,"width": "6","collapse": false,"className": ""},{"id": "abc33c008a0186bd","type": "ui_group","name": "運行狀態","tab": "6dd062cb1b09a3af","order": 1,"disp": true,"width": "6","collapse": false,"className": ""},{"id": "bcdd867b59a3eac4","type": "ui_group","name": "I","tab": "6dd062cb1b09a3af","order": 2,"disp": false,"width": 2,"collapse": false,"className": ""},{"id": "83791b88bc9ededf","type": "ui_group","name": "II","tab": "6dd062cb1b09a3af","order": 4,"disp": false,"width": 2,"collapse": false,"className": ""},{"id": "6dd062cb1b09a3af","type": "ui_tab","name": "調試板","icon": "dashboard","disabled": false,"hidden": false} ]

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總結

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