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基于WPF技术的换热站智能监控系统16--动态数据绑定
1、实现思路
1）实时读取到的数据绑定到前台UI控件上，这个通过MVVM模式实现，同时注意实时读取必须通过任务task异步方式，这就需要读取PLC数据。
2）UI控件的动作，如开或关水泵，必定能够将值写入PLC，这就需要写入PLC数据，此时当上面1的任务执行时，又获取到了新的实时数据，从而改变UI控件
注意：
默认启动程序后，就主动读取PLC数据，启动成功后，可以关闭某个水泵
2、开搞
1、完善数据块中的变量
每个水泵有3个数据，即状态，温度，压力，所以有9个变量
2、完善监控变量
3、完善逻辑代码
- private void ReadmyPLC()
- {
- tasks.Add(Task.Run(async () =>
- {
- plc.Open();
- while (!cts.IsCancellationRequested)
- {
- await Task.Delay(5000);
- //读取float，从左到右参数依次是：数据块类型，数据块号，启始地址，变量类型，读取数量
- var result = plc.Read(S7.Net.DataType.DataBlock, 1, 2, S7.Net.VarType.Real, 6);
- float[] values = (float[])result;
- //水泵1数据
- MainData.MomentDataList1[0].Value = values[0];
- MainData.MomentDataList1[1].Value = values[1];
- //水泵2数据
- MainData.MomentDataList2[0].Value = values[2];
- MainData.MomentDataList2[1].Value = values[3];
- //水泵3数据
- MainData.MomentDataList3[0].Value = values[4];
- MainData.MomentDataList3[1].Value = values[5];
- //读取bool，DB1.DBX0.0是变量的具体地址
- var result2 = plc.Read(pumpaddr1); //水泵1状态
- Pump1State = bool.Parse(result2.ToString());
- if (!Pump1State)
- {
- WaterDirection1 = "NONE";//停止流动
- }
- else
- {
- WaterDirection1 = "EW";//开始流动
- }
- result2 = plc.Read(pumpaddr2);//水泵2状态
- Pump2State = bool.Parse(result2.ToString());
- if (!Pump3State)
- {
- WaterDirection2 = "NONE";
- }
- else
- {
- WaterDirection2 = "EW";
- }
- result2 = plc.Read(pumpaddr3); //水泵3状态
- Pump3State = bool.Parse(result2.ToString());
- if (!Pump3State)
- {
- WaterDirection3 = "NONE";
- WaterDirection32 = "NONE";
- }
- else
- {
- WaterDirection3 = "EW";
- WaterDirection32 = "WE";
- }
- }
- }, cts.Token)
- );
- }
4、完善控件数据绑定
"West.HeatExchange.Views.MainWindow" - xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
- xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
- xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
- xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
- xmlns:local="clr-namespace:West.HeatExchange.Views"
- mc:Ignorable="d"
- xmlns:c="clr-namespace:West.HeatExchange.Controls"
- xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
- WindowStyle="None" AllowsTransparency="True" WindowStartupLocation="CenterScreen" ResizeMode="CanResizeWithGrip"
- Background="#F7F9FA" FontFamily="Microsoft YaHei" Foreground="#333"
- Title="MainWindow" Height="650" Width="1200" >
"Top" > "48"/> "Auto"/> "Auto"/> "50"/> "45" Grid.Column="0" Background="#3BBAFF" BorderBrush="#EEE" BorderThickness="1" HorizontalAlignment="Left"> "../Assets/Images/Logo_white.png" Margin="8"/> "4" Grid.Column="1" Background="#5E7593" MouseLeftButtonDown="Border_MouseLeftButtonDown"/> "换热站远程监控系统" VerticalAlignment="Center" Foreground="White" FontSize="19" Margin="10,0" Grid.Column="1"/> "{Binding NowTime, StringFormat={}{0:yyyy年MM月dd日HH时mm分ss秒}}" VerticalAlignment="Center" Foreground="White" FontSize="19" Margin="20,0" Grid.Column="3"/> "../Assets/Images/closewin.png"/> "Left" Width="280" Background="White" CornerRadius="3" Margin="30,10,10,10" > "10" ShadowDepth="0" Color="LightGray" Opacity="0.3"/> "20,10"> "50"/> "1.2*"/> "1.2*"/> "0" Background="#3BBAFF" CornerRadius="3" Margin="0,8"> "Horizontal" VerticalAlignment="Center" HorizontalAlignment="Center"> "换热站综合信息详情" Foreground="White" FontSize="12" VerticalAlignment="Center"/> "1" Background="#FFF0F4F8" Margin="0,5"> "16" VerticalAlignment="Bottom" Background="#FF0E3A52" CornerRadius="8"/> "#3BBAFF" VerticalAlignment="Top" HorizontalAlignment="Left"> "历史曲线" Foreground="White" FontSize="10" Margin="5,1"/> "2" Background="#FFF0F4F8" Margin="0,5"> "1"> "Horizontal" VerticalAlignment="Top"> "#FF3BBAFF"> "能耗排名" Foreground="White" FontSize="10" Margin="5,1"/> "10" VerticalAlignment="Center" Margin="5,0"> "耗水" Foreground="#666"/> "" FontFamily="../Assets/Fonts/#iconfont"/> "10" VerticalAlignment="Center"> "耗电" Foreground="#666"/> "" FontFamily="../Assets/Fonts/#iconfont"/> "10" VerticalAlignment="Center" Margin="5,0"> "耗热" Foreground="#666"/> "" FontFamily="../Assets/Fonts/#iconfont"/> "0,0,10,0"> "20"/> "" FontFamily="../Assets/Fonts/#iconfont" VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="#FF3BBAFF"/> "1" Minimum="0" Maximum="200" Value="182" Background="LightGray" Foreground="Orange" Height="4"/> "0,0,10,0"> "20"/> "" FontFamily="../Assets/Fonts/#iconfont" VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="#FF3BBAFF"/> "1" Minimum="0" Maximum="200" Value="156" Background="LightGray" Foreground="Orange" Height="4"/> "0,0,10,0"> "20"/> "" FontFamily="../Assets/Fonts/#iconfont" VerticalAlignment="Center" HorizontalAlignment="Center" Foreground="#FF3BBAFF"/> "1" Minimum="0" Maximum="200" Value="116" Background="LightGray" Foreground="Orange" Height="4"/> "5" Margin="10,0"> "0,0" EndPoint="1,0"> "#FF3BBAFF" Offset="0"/> "#113BBAFF" Offset="1"/> "3" Background="#FFF0F4F8" Margin="0,5"> "16" VerticalAlignment="Bottom" Background="#FF0E3A52" CornerRadius="8"/> "#FF3BBAFF" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="2"> "故障统计" Foreground="White" FontSize="10" Margin="5,1"/> "4" Background="#FFF0F4F8" Margin="0,5"> "#FF3BBAFF" VerticalAlignment="Top" HorizontalAlignment="Left" Margin="2"> "数据报表" Foreground="White" FontSize="10" Margin="5,1"/> "80" DockPanel.Dock="Top" Background="White" Margin="0,10,20,0" CornerRadius="3"> "10" ShadowDepth="0" Color="LightGray" Opacity="0.3"/> "1"> "Center" HorizontalAlignment="Center"> "手动模式" IsChecked="True" Style="{StaticResource ModeButtonStyle}"/> "自动模式" Style="{StaticResource ModeButtonStyle}"/> "#88F0F4F8" VerticalAlignment="Center" HorizontalAlignment="Center"> "No.1 补水泵" Margin="20,3" HorizontalAlignment="Center"/> "1" Margin="10,0"> "15"/> "0" IsChecked="True" Command="{Binding StartCommand}" CommandParameter="1" Grid.ColumnSpan="2" Style="{StaticResource LeftSwitchButtonStyle}" Name="rb"/> "1" Grid.ColumnSpan="2" Command="{Binding StopCommand}" CommandParameter="1" Style="{StaticResource RightSwitchButtonStyle}"/> "#88F0F4F8" VerticalAlignment="Center" HorizontalAlignment="Center"> "No.2 补水泵" Margin="20,3" HorizontalAlignment="Center"/> "1" Margin="10,0"> "15"/> "True" Grid.ColumnSpan="2" Command="{Binding StartCommand}" CommandParameter="2" Style="{StaticResource LeftSwitchButtonStyle}"/> "1" Grid.ColumnSpan="2" Command="{Binding StopCommand}" CommandParameter="2" Style="{StaticResource RightSwitchButtonStyle}"/> "#88F0F4F8" VerticalAlignment="Center" HorizontalAlignment="Center"> "No.3 补水泵" Margin="20,3" HorizontalAlignment="Center"/> "1" Margin="10,0"> "15"/> "True" Grid.ColumnSpan="2" Command="{Binding StartCommand}" CommandParameter="3" Style="{StaticResource LeftSwitchButtonStyle}"/> "1" Grid.ColumnSpan="2" Command="{Binding StopCommand}" CommandParameter="3" Style="{StaticResource RightSwitchButtonStyle}"/> "#88F0F4F8" VerticalAlignment="Center" HorizontalAlignment="Center"> "循环变频故障" Grid.Row="0" Style="{StaticResource WarningButtonStyle}" IsChecked="True"/> "补水变频故障" Grid.Row="1" Style="{StaticResource WarningButtonStyle}"/> "White" Margin="0,10,20,10" CornerRadius="3" > "10" ShadowDepth="0" Color="LightGray" Opacity="0.3"/> "90" > "90" > "{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Canvas}, Path=ActualHeight}" Y="0"> "90" CenterX="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Canvas}, Path=ActualHeight}" CenterY="0"> "../Assets/Images/d1.jpg" Canvas.Left="35" Canvas.Top="29" Height="39" Width="61" HorizontalAlignment="Center" VerticalAlignment="Top"/> "../Assets/Images/d1.jpg" Canvas.Left="755" Canvas.Top="29" Height="39" Width="61" HorizontalAlignment="Center" VerticalAlignment="Top"/> "../Assets/Images/d1.jpg" Canvas.Left="755" Canvas.Top="279" Height="39" Width="61" HorizontalAlignment="Center" VerticalAlignment="Top"/> "../Assets/Images/d1.jpg" Panel.ZIndex="3" Canvas.Left="95" Canvas.Top="429" Height="39" Width="61" HorizontalAlignment="Center" VerticalAlignment="Top"/> "../Assets/Images/heat_exchange.jpg" Panel.ZIndex="2" Canvas.Left="264" Canvas.Top="20" Height="156" Width="80" HorizontalAlignment="Center" VerticalAlignment="Top"/> "../Assets/Images/heat_exchange.jpg" Panel.ZIndex="2" Canvas.Left="264" Canvas.Top="200" Height="156" Width="80" HorizontalAlignment="Center" VerticalAlignment="Top"/> "../Assets/Images/i2.jpg" Canvas.Left="164" Canvas.Top="13" Height="31" Width="25" HorizontalAlignment="Left" VerticalAlignment="Top"/> "../Assets/Images/i2.jpg" Canvas.Left="424" Canvas.Top="13" Height="31" Width="25" HorizontalAlignment="Left" VerticalAlignment="Top"/> "../Assets/Images/i2.jpg" Canvas.Left="524" Canvas.Top="85" Height="31" Width="25" HorizontalAlignment="Left" VerticalAlignment="Top"/> "../Assets/Images/i2.jpg" Canvas.Left="684" Canvas.Top="193" Height="31" Width="25" HorizontalAlignment="Left" VerticalAlignment="Top"/> "../Assets/Images/i2.jpg" Canvas.Left="584" Canvas.Top="265" Height="31" Width="25" HorizontalAlignment="Left" VerticalAlignment="Top"/> "../Assets/Images/f2.jpg" Panel.ZIndex="2" Canvas.Left="64" Canvas.Top="115" Height="33" Width="34" HorizontalAlignment="Left" VerticalAlignment="Top"/> "../Assets/Images/f2.jpg" Panel.ZIndex="2" Canvas.Left="224" Canvas.Top="425" Height="33" Width="34" HorizontalAlignment="Left" VerticalAlignment="Top"/> - -3个水泵-->
5、运行效果
程序启动后，暂时没有数据
5秒后，数据实时显示，温度压力状态数据与监控表中的数据一致的
关闭水泵1，观察管道和风扇情况及监控表数值
开启水泵1，管道流动了，风扇转动了 ，PLC数据改变了
至此，PLC与系统完美对接，实现了全场监控管理。走过路过不要错过，点赞关注收藏又圈粉，共同致富，为财务自由作出贡献
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- 原文地址：https://blog.csdn.net/hqwest/article/details/139755928