{"id":75877,"date":"2026-02-13T11:26:02","date_gmt":"2026-02-13T03:26:02","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/75877.html"},"modified":"2026-02-13T11:26:02","modified_gmt":"2026-02-13T03:26:02","slug":"c-%e8%a5%bf%e9%97%a8%e5%ad%90plc-%e5%b7%a5%e4%b8%9a%e4%b8%8a%e4%bd%8d%e6%9c%ba%e5%ae%8c%e6%95%b4%e8%90%bd%e5%9c%b0%e6%8c%87%e5%8d%97%ef%bc%9a%e4%bb%8e%e9%87%87%e9%9b%86%e5%88%b0%e6%8a%a5%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/75877.html","title":{"rendered":"C# + \u897f\u95e8\u5b50PLC \u5de5\u4e1a\u4e0a\u4f4d\u673a\u5b8c\u6574\u843d\u5730\u6307\u5357\uff1a\u4ece\u91c7\u96c6\u5230\u62a5\u8868\u62a5\u8b66\u5168\u94fe\u8def\uff08\u9ec4\u91d1\u7ec4\u5408\u5b9e\u6218\u7248\uff09"},"content":{"rendered":"<p>\u4e00\u3001\u5f00\u53d1\u524d\u7f6e\u51c6\u5907\u201d\u5f00\u5934\u90e8\u5206&#xff0c;\u5e76\u4ece\u201cVisual Studio 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\/>\n\u56fe\u8868\u5e93&#xff1a;LiveCharts2&#xff08;\u9ad8\u6027\u80fd\u3001\u767e\u4e07\u70b9\u66f2\u7ebf\u4e0d\u5361&#xff09;<br \/>\n\u901a\u4fe1\u5e93&#xff1a;Snap7.Net&#xff08;S7\u901a\u4fe1\u6700\u7a33\u5b9a\u3001\u6700\u8f7b\u91cf\u3001\u65e0\u9700OPC\u8bb8\u53ef&#xff09;<\/p>\n<p>2\u3001\u786c\u4ef6\u73af\u5883<br \/>\n\u5de5\u63a7\u673a&#xff1a;i5\/i7 &#043; 8GB&#043;\u5185\u5b58 &#043; SSD&#xff08;\u63a8\u8350\u5de5\u63a7\u54c1\u724c\u7814\u534e\/\u51cc\u534e\/\u827e\u8baf&#xff09;<br \/>\nPLC&#xff1a;\u897f\u95e8\u5b50S7-1200\/1500&#xff08;\u4e3b\u6d41&#xff09;\u6216 S7-200Smart&#xff08;\u7ecf\u6d4e\u578b&#xff09;<br \/>\n\u901a\u4fe1\u65b9\u5f0f&#xff1a;\u4ee5\u592a\u7f51&#xff08;\u63a8\u8350RJ45\u7f51\u7ebf\u76f4\u8fde\u6216\u4ea4\u6362\u673a&#xff09;\u6216 RS485&#xff08;\u5c4f\u853d\u53cc\u7ede\u7ebf &#043; \u7ec8\u7aef\u7535\u963b120\u03a9&#xff09;<br \/>\n\u7535\u6e90&#xff1a;\u5de5\u4e1a\u7ea724V DC\u7a33\u538b\u7535\u6e90&#xff08;\u9632\u6d6a\u6d8c&#xff09;<br \/>\n\u7f51\u7edc&#xff1a;\u5343\u5146\u4ea4\u6362\u673a&#xff08;\u907f\u514d\u8def\u7531\u5668NAT\u5bfc\u81f4\u5ef6\u8fdf&#xff09;<\/p>\n<h4>1.2 \u6838\u5fc3NuGet\u4f9d\u8d56&#xff08;\u5168\u90e8\u514d\u8d39\u3001\u5de5\u4e1a\u5e38\u7528&#xff09;<\/h4>\n<table>\n<tr>\u5305\u540d\u7528\u9014\u7248\u672c\u5efa\u8bae\u4e3a\u4ec0\u4e48\u5fc5\u88c5<\/tr>\n<tbody>\n<tr>\n<td>Snap7.Net<\/td>\n<td>\u897f\u95e8\u5b50S7\u901a\u4fe1&#xff08;\u6700\u7a33\u5b9a\u3001\u6700\u5feb&#xff09;<\/td>\n<td>1.4.x<\/td>\n<td>\u5b98\u65b9\u63a8\u8350\u3001\u65e0\u8bb8\u53ef\u8d39<\/td>\n<\/tr>\n<tr>\n<td>Microsoft.EntityFrameworkCore.Sqlite<\/td>\n<td>\u672c\u5730SQLite\u5b58\u50a8\u4e0e\u67e5\u8be2<\/td>\n<td>8.x<\/td>\n<td>\u96f6\u914d\u7f6e\u3001\u8f7b\u91cf\u3001\u5feb\u901f<\/td>\n<\/tr>\n<tr>\n<td>Microsoft.EntityFrameworkCore.SqlServer<\/td>\n<td>SQL Server\u8ffd\u6eaf\u4e0e\u62a5\u8868<\/td>\n<td>8.x<\/td>\n<td>\u514d\u8d39Express\u7248\u652f\u6301\u5927\u5bb9\u91cf<\/td>\n<\/tr>\n<tr>\n<td>LiveChartsCore.SkiaSharpView.WPF<\/td>\n<td>\u5b9e\u65f6\u66f2\u7ebf\u3001\u4eea\u8868\u76d8<\/td>\n<td>2.x<\/td>\n<td>\u9ad8\u6027\u80fd\u3001\u4e0d\u5361\u987f<\/td>\n<\/tr>\n<tr>\n<td>CommunityToolkit.Mvvm<\/td>\n<td>MVVM\u6a21\u5f0f&#xff08;\u6570\u636e\u7ed1\u5b9a\u3001\u547d\u4ee4&#xff09;<\/td>\n<td>8.x<\/td>\n<td>\u5b98\u65b9\u63a8\u8350\u3001\u7b80\u6d01<\/td>\n<\/tr>\n<tr>\n<td>Serilog.AspNetCore<\/td>\n<td>\u7ed3\u6784\u5316\u65e5\u5fd7<\/td>\n<td>8.x<\/td>\n<td>\u751f\u4ea7\u7ea7\u65e5\u5fd7<\/td>\n<\/tr>\n<tr>\n<td>Polly<\/td>\n<td>\u91cd\u8bd5\/\u7194\u65ad\/\u8d85\u65f6<\/td>\n<td>8.x<\/td>\n<td>\u9632\u65ad\u7f51\/PLC\u5f02\u5e38<\/td>\n<\/tr>\n<tr>\n<td>Microsoft.Extensions.Hosting<\/td>\n<td>BackgroundService&#xff08;\u91c7\u96c6\u9694\u79bb&#xff09;<\/td>\n<td>8.x<\/td>\n<td>\u6258\u7ba1\u670d\u52a1\u3001\u81ea\u52a8\u751f\u547d\u5468\u671f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5b89\u88c5\u547d\u4ee4&#xff08;\u5728\u9879\u76ee\u76ee\u5f55\u6267\u884c&#xff09;&#xff1a;<\/p>\n<p>dotnet <span class=\"token function\">add<\/span> package Snap7.Net<br \/>\ndotnet <span class=\"token function\">add<\/span> package Microsoft.EntityFrameworkCore.Sqlite<br \/>\ndotnet <span class=\"token function\">add<\/span> package Microsoft.EntityFrameworkCore.SqlServer<br \/>\ndotnet <span class=\"token function\">add<\/span> package LiveChartsCore.SkiaSharpView.WPF<br \/>\ndotnet <span class=\"token function\">add<\/span> package CommunityToolkit.Mvvm<br \/>\ndotnet <span class=\"token function\">add<\/span> package Serilog.AspNetCore<br \/>\ndotnet <span class=\"token function\">add<\/span> package Polly<br \/>\ndotnet <span class=\"token function\">add<\/span> package Microsoft.Extensions.Hosting<\/p>\n<h3>\u4e8c\u3001\u5de5\u4e1a\u7ea7PLC\u76d1\u63a7\u7cfb\u7edf\u5b8c\u6574\u67b6\u6784&#xff08;\u5206\u5c42 &#043; \u5bb9\u9519&#xff09;<\/h3>\n<p>\u5c42\u7ea7              \u804c\u8d23                                      \u6280\u672f\u6808                              \u5bb9\u9519\u91cd\u70b9<br \/>\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500<br \/>\n\u7b2c1\u5c42 \u786c\u4ef6\u63a5\u5165\u5c42     S7 PLC\u6570\u636e\u91c7\u96c6&#xff08;\u4ee5\u592a\u7f51\/\u4e32\u53e3&#xff09;             Snap7.Net                           \u65ad\u7ebf\u91cd\u8fde\u3001\u8d85\u65f6\u4fdd\u62a4\u3001\u6279\u91cf\u8bfb<br \/>\n\u7b2c2\u5c42 \u6570\u636e\u901a\u9053\u5c42     \u91c7\u96c6\u2192\u6e05\u6d17\u2192\u7f13\u5b58\u2192\u5206\u53d1                      Channel &#043; ConcurrentDictionary      \u80cc\u538b\u63a7\u5236\u3001\u65ad\u70b9\u7eed\u4f20<br \/>\n\u7b2c3\u5c42 \u4e1a\u52a1\u903b\u8f91\u5c42     \u6570\u636e\u6821\u9a8c\u3001\u62a5\u8b66\u5224\u65ad\u3001\u62a5\u8868\u7edf\u8ba1              MVVM &#043; \u89c4\u5219\u5f15\u64ce                     \u4e8b\u52a1\u4e00\u81f4\u6027\u3001\u8bef\u62a5\u8fc7\u6ee4<br \/>\n\u7b2c4\u5c42 \u6570\u636e\u6301\u4e45\u5c42     \u5b9e\u65f6SQLite &#043; \u5386\u53f2SQL Server               EF Core                             \u5206\u8868\u3001\u7d22\u5f15\u3001\u4e8b\u52a1<br \/>\n\u7b2c5\u5c42 HMI\u5c55\u793a\u5c42      \u6d41\u7a0b\u56fe\u3001\u4eea\u8868\u76d8\u3001\u66f2\u7ebf\u3001\u62a5\u8b66\u770b\u677f            WPF &#043; LiveCharts2                   \u865a\u62df\u5316\u3001\u5f02\u6b65\u5237\u65b0\u3001\u53cc\u7f13\u51b2<br \/>\n\u6a2a\u5207&#xff1a;\u53ef\u89c2\u6d4b\u6027       \u65e5\u5fd7\u3001\u6307\u6807\u3001\u8fdc\u7a0b\u8bca\u65ad                      Serilog &#043; Grafana\/Prometheus        \u95ee\u9898\u79d2\u7ea7\u5b9a\u4f4d<br \/>\n\u6a2a\u5207&#xff1a;\u5f02\u5e38\u5904\u7406       \u7edf\u4e00\u6355\u83b7\u3001\u91cd\u8bd5\u3001\u8865\u507f                      Polly &#043; CircuitBreaker              \u96f6\u6570\u636e\u4e22\u5931<\/p>\n<h3>\u4e09\u3001\u6838\u5fc3\u4ee3\u7801\u5b9e\u73b0&#xff08;\u53ef\u76f4\u63a5\u590d\u7528&#xff09;<\/h3>\n<h4>3.1 S7 PLC\u91c7\u96c6\u670d\u52a1&#xff08;BackgroundService &#043; \u91cd\u8fde&#xff09;<\/h4>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">Microsoft<span class=\"token punctuation\">.<\/span>Extensions<span class=\"token punctuation\">.<\/span>Hosting<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">Snap7<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token namespace\">System<span class=\"token punctuation\">.<\/span>Threading<span class=\"token punctuation\">.<\/span>Channels<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PlcDataCollector<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">BackgroundService<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">Snap7Client<\/span> _client <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> _plcIp<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">Channel<span class=\"token punctuation\">&lt;<\/span>PlcDataPoint<span class=\"token punctuation\">&gt;<\/span><\/span> _channel<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">ILogger<span class=\"token punctuation\">&lt;<\/span>PlcDataCollector<span class=\"token punctuation\">&gt;<\/span><\/span> _logger<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">ChannelReader<span class=\"token punctuation\">&lt;<\/span>PlcDataPoint<span class=\"token punctuation\">&gt;<\/span><\/span> Reader <span class=\"token operator\">&#061;&gt;<\/span> _channel<span class=\"token punctuation\">.<\/span>Reader<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">PlcDataCollector<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\"><span class=\"token keyword\">string<\/span><\/span> plcIp<span class=\"token punctuation\">,<\/span> <span class=\"token class-name\">ILogger<span class=\"token punctuation\">&lt;<\/span>PlcDataCollector<span class=\"token punctuation\">&gt;<\/span><\/span> logger<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _plcIp <span class=\"token operator\">&#061;<\/span> plcIp<span class=\"token punctuation\">;<\/span><br \/>\n        _logger <span class=\"token operator\">&#061;<\/span> logger<span class=\"token punctuation\">;<\/span><br \/>\n        _channel <span class=\"token operator\">&#061;<\/span> Channel<span class=\"token punctuation\">.<\/span><span class=\"token generic-method\"><span class=\"token function\">CreateBounded<\/span><span class=\"token generic class-name\"><span class=\"token punctuation\">&lt;<\/span>PlcDataPoint<span class=\"token punctuation\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">BoundedChannelOptions<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10000<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            FullMode <span class=\"token operator\">&#061;<\/span> BoundedChannelFullMode<span class=\"token punctuation\">.<\/span>DropOldest<br \/>\n        <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">override<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">ExecuteAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">CancellationToken<\/span> stoppingToken<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>stoppingToken<span class=\"token punctuation\">.<\/span>IsCancellationRequested<span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">try<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">!<\/span>_client<span class=\"token punctuation\">.<\/span>Connected<span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> Task<span class=\"token punctuation\">.<\/span><span class=\"token function\">Run<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _client<span class=\"token punctuation\">.<\/span><span class=\"token function\">ConnectTo<\/span><span class=\"token punctuation\">(<\/span>_plcIp<span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>result <span class=\"token operator\">!&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                    <span class=\"token punctuation\">{<\/span><br \/>\n                        _logger<span class=\"token punctuation\">.<\/span><span class=\"token function\">LogWarning<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;S7\u8fde\u63a5\u5931\u8d25&#xff0c;\u9519\u8bef\u7801&#xff1a;{Code}&#xff0c;5\u79d2\u540e\u91cd\u8bd5&#8230;&#034;<\/span><span class=\"token punctuation\">,<\/span> result<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                        <span class=\"token keyword\">await<\/span> Task<span class=\"token punctuation\">.<\/span><span class=\"token function\">Delay<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5000<\/span><span class=\"token punctuation\">,<\/span> stoppingToken<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                        <span class=\"token keyword\">continue<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token punctuation\">}<\/span><br \/>\n                    _logger<span class=\"token punctuation\">.<\/span><span class=\"token function\">LogInformation<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;S7\u8fde\u63a5\u6210\u529f&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><\/p>\n<p>                <span class=\"token comment\">\/\/ \u793a\u4f8b&#xff1a;\u8bfbDB10\u7684\u6e29\u5ea6&#xff08;Real\u7c7b\u578b&#xff0c;\u5730\u57400&#xff09;<\/span><br \/>\n                <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> buffer <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\"><span class=\"token keyword\">byte<\/span><\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token class-name\"><span class=\"token keyword\">int<\/span><\/span> readResult <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">await<\/span> Task<span class=\"token punctuation\">.<\/span><span class=\"token function\">Run<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> _client<span class=\"token punctuation\">.<\/span><span class=\"token function\">DBRead<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> buffer<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>readResult <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><br \/>\n                <span class=\"token punctuation\">{<\/span><br \/>\n                    <span class=\"token class-name\"><span class=\"token keyword\">float<\/span><\/span> temp <span class=\"token operator\">&#061;<\/span> BitConverter<span class=\"token punctuation\">.<\/span><span class=\"token function\">ToSingle<\/span><span class=\"token punctuation\">(<\/span>buffer<span class=\"token punctuation\">.<\/span><span class=\"token function\">Reverse<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">ToArray<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token keyword\">await<\/span> _channel<span class=\"token punctuation\">.<\/span>Writer<span class=\"token punctuation\">.<\/span><span class=\"token function\">WriteAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">PlcDataPoint<\/span> <span class=\"token punctuation\">{<\/span> Timestamp <span class=\"token operator\">&#061;<\/span> DateTime<span class=\"token punctuation\">.<\/span>Now<span class=\"token punctuation\">,<\/span> Temperature <span class=\"token operator\">&#061;<\/span> temp <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n            <span class=\"token keyword\">catch<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token class-name\">Exception<\/span> ex<span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                _logger<span class=\"token punctuation\">.<\/span><span class=\"token function\">LogError<\/span><span class=\"token punctuation\">(<\/span>ex<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;\u91c7\u96c6\u5f02\u5e38&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                _client<span class=\"token punctuation\">.<\/span><span class=\"token function\">Disconnect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><\/p>\n<p>            <span class=\"token keyword\">await<\/span> Task<span class=\"token punctuation\">.<\/span><span class=\"token function\">Delay<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">,<\/span> stoppingToken<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 100ms\u91c7\u96c6\u4e00\u6b21<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">override<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">StopAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">CancellationToken<\/span> cancellationToken<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        _client<span class=\"token punctuation\">.<\/span><span class=\"token function\">Disconnect<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">await<\/span> <span class=\"token keyword\">base<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">StopAsync<\/span><span class=\"token punctuation\">(<\/span>cancellationToken<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PlcDataPoint<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">DateTime<\/span> Timestamp <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">float<\/span><\/span> Temperature <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5176\u4ed6\u5b57\u6bb5&#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>3.2 \u6570\u636e\u5e93\u5b58\u50a8&#xff08;EF Core &#043; SQLite &#043; SQL Server&#xff09;<\/h4>\n<p><span class=\"token keyword\">using<\/span> <span class=\"token namespace\">Microsoft<span class=\"token punctuation\">.<\/span>EntityFrameworkCore<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PlcDbContext<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">DbContext<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">DbSet<span class=\"token punctuation\">&lt;<\/span>PlcDataPointEntity<span class=\"token punctuation\">&gt;<\/span><\/span> PlcDataPoints <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">protected<\/span> <span class=\"token keyword\">override<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">void<\/span><\/span> <span class=\"token function\">OnConfiguring<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">DbContextOptionsBuilder<\/span> optionsBuilder<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token comment\">\/\/ \u672c\u5730SQLite&#xff08;\u5b9e\u65f6 &#043; \u7f13\u5b58&#xff09;<\/span><br \/>\n        optionsBuilder<span class=\"token punctuation\">.<\/span><span class=\"token function\">UseSqlite<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Data Source&#061;plc_data.db&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token comment\">\/\/ \u6216\u5207\u6362\u5230SQL Server&#xff08;\u6b63\u5f0f\u8ffd\u6eaf&#xff09;<\/span><br \/>\n        <span class=\"token comment\">\/\/ optionsBuilder.UseSqlServer(&#034;Server&#061;192.168.1.10;Database&#061;PlcHistory;Trusted_Connection&#061;True;&#034;);<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">PlcDataPointEntity<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">int<\/span><\/span> Id <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\">DateTime<\/span> Timestamp <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token return-type class-name\"><span class=\"token keyword\">float<\/span><\/span> Temperature <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">get<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token keyword\">set<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5176\u4ed6\u5b57\u6bb5&#8230;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>3.3 WPF\u5b9e\u65f6\u5c55\u793a &#043; \u5386\u53f2\u62a5\u8868&#xff08;\u7b80\u7248&#xff09;<\/h4>\n<p><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">partial<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MainWindow<\/span> <span class=\"token punctuation\">:<\/span> <span class=\"token type-list\"><span class=\"token class-name\">Window<\/span><\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">PlcDataCollector<\/span> _collector<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">readonly<\/span> <span class=\"token class-name\">PlcDbContext<\/span> _db <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">public<\/span> <span class=\"token function\">MainWindow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">InitializeComponent<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _collector <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">PlcDataCollector<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;192.168.1.100&#034;<\/span><span class=\"token punctuation\">,<\/span> Log<span class=\"token punctuation\">.<\/span>Logger<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        _ <span class=\"token operator\">&#061;<\/span> _collector<span class=\"token punctuation\">.<\/span><span class=\"token function\">ExecuteAsync<\/span><span class=\"token punctuation\">(<\/span>CancellationToken<span class=\"token punctuation\">.<\/span>None<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>        <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> timer <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">DispatcherTimer<\/span> <span class=\"token punctuation\">{<\/span> Interval <span class=\"token operator\">&#061;<\/span> TimeSpan<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromMilliseconds<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">300<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        timer<span class=\"token punctuation\">.<\/span>Tick <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">,<\/span> e<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span> <span class=\"token keyword\">await<\/span> <span class=\"token function\">RefreshDataAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        timer<span class=\"token punctuation\">.<\/span><span class=\"token function\">Start<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><\/p>\n<p>    <span class=\"token keyword\">private<\/span> <span class=\"token keyword\">async<\/span> <span class=\"token return-type class-name\">Task<\/span> <span class=\"token function\">RefreshDataAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">await<\/span> _collector<span class=\"token punctuation\">.<\/span>Reader<span class=\"token punctuation\">.<\/span><span class=\"token function\">WaitToReadAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token punctuation\">{<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>_collector<span class=\"token punctuation\">.<\/span>Reader<span class=\"token punctuation\">.<\/span><span class=\"token function\">TryRead<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">out<\/span> <span class=\"token class-name\"><span class=\"token keyword\">var<\/span><\/span> data<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token punctuation\">{<\/span><br \/>\n                Dispatcher<span class=\"token punctuation\">.<\/span><span class=\"token function\">Invoke<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;&gt;<\/span><br \/>\n                <span class=\"token punctuation\">{<\/span><br \/>\n                    txtTemp<span class=\"token punctuation\">.<\/span>Text <span class=\"token operator\">&#061;<\/span> <span class=\"token interpolation-string\"><span class=\"token string\">$&#034;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span><span class=\"token expression language-csharp\">data<span class=\"token punctuation\">.<\/span>Temperature<\/span><span class=\"token format-string\"><span class=\"token punctuation\">:<\/span>F1<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u00b0C&#034;<\/span><\/span><span class=\"token punctuation\">;<\/span><br \/>\n                    <span class=\"token comment\">\/\/ \u6dfb\u52a0\u5230\u66f2\u7ebf\u3001\u4eea\u8868\u76d8\u7b49<\/span><br \/>\n                <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>                <span class=\"token comment\">\/\/ \u5b58\u6570\u636e\u5e93<\/span><br \/>\n                _db<span class=\"token punctuation\">.<\/span>PlcDataPoints<span class=\"token punctuation\">.<\/span><span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> <span class=\"token constructor-invocation class-name\">PlcDataPointEntity<\/span> <span class=\"token punctuation\">{<\/span> Timestamp <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">.<\/span>Timestamp<span class=\"token punctuation\">,<\/span> Temperature <span class=\"token operator\">&#061;<\/span> data<span class=\"token punctuation\">.<\/span>Temperature <span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n                <span class=\"token keyword\">await<\/span> _db<span class=\"token punctuation\">.<\/span><span class=\"token function\">SaveChangesAsync<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token 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