IT技术分享网 > 编程语言 > c#使用ModuleBus方式读取线圈的值 c#使用ModuleBus方式读取线圈的值
2022/10/16 1:25:03
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1.建立一个程序,引用HslCommunication.dll和Newtonsoft.Json.dll
2.界面
3.界面代码
namespace ModbusDemo { partial class Form1 { /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的资源。 /// </summary> /// <param name="disposing">如果应释放托管资源,为 true;否则为 false。</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows 窗体设计器生成的代码 /// <summary> /// 设计器支持所需的方法 - 不要 /// 使用代码编辑器修改此方法的内容。 /// </summary> private void InitializeComponent() { this.button5 = new System.Windows.Forms.Button(); this.button6 = new System.Windows.Forms.Button(); this.textBox1 = new System.Windows.Forms.TextBox(); this.label1 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); this.textBox2 = new System.Windows.Forms.TextBox(); this.button3 = new System.Windows.Forms.Button(); this.label3 = new System.Windows.Forms.Label(); this.txtIp = new System.Windows.Forms.TextBox(); this.label4 = new System.Windows.Forms.Label(); this.txtPort = new System.Windows.Forms.TextBox(); this.SuspendLayout(); // // button5 // this.button5.Location = new System.Drawing.Point(133, 318); this.button5.Name = "button5"; this.button5.Size = new System.Drawing.Size(164, 82); this.button5.TabIndex = 4; this.button5.Text = "开启连接"; this.button5.UseVisualStyleBackColor = true; this.button5.Click += new System.EventHandler(this.Button5_Click); // // button6 // this.button6.Location = new System.Drawing.Point(355, 318); this.button6.Name = "button6"; this.button6.Size = new System.Drawing.Size(172, 82); this.button6.TabIndex = 5; this.button6.Text = "关闭连接"; this.button6.UseVisualStyleBackColor = true; this.button6.Click += new System.EventHandler(this.Button6_Click); // // textBox1 // this.textBox1.Enabled = false; this.textBox1.Location = new System.Drawing.Point(222, 39); this.textBox1.Multiline = true; this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(272, 58); this.textBox1.TabIndex = 6; // // label1 // this.label1.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134))); this.label1.Location = new System.Drawing.Point(116, 52); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(100, 45); this.label1.TabIndex = 7; this.label1.Text = "返回值"; // // label2 // this.label2.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134))); this.label2.Location = new System.Drawing.Point(129, 153); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(72, 45); this.label2.TabIndex = 8; this.label2.Text = "地址"; // // textBox2 // this.textBox2.Location = new System.Drawing.Point(222, 140); this.textBox2.Multiline = true; this.textBox2.Name = "textBox2"; this.textBox2.Size = new System.Drawing.Size(272, 58); this.textBox2.TabIndex = 9; // // button3 // this.button3.Location = new System.Drawing.Point(512, 148); this.button3.Name = "button3"; this.button3.Size = new System.Drawing.Size(108, 50); this.button3.TabIndex = 10; this.button3.Text = "监听"; this.button3.UseVisualStyleBackColor = true; this.button3.Click += new System.EventHandler(this.Button3_Click); // // label3 // this.label3.AutoSize = true; this.label3.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134))); this.label3.Location = new System.Drawing.Point(91, 263); this.label3.Name = "label3"; this.label3.Size = new System.Drawing.Size(31, 20); this.label3.TabIndex = 11; this.label3.Text = "IP"; // // txtIp // this.txtIp.Location = new System.Drawing.Point(133, 255); this.txtIp.Multiline = true; this.txtIp.Name = "txtIp"; this.txtIp.Size = new System.Drawing.Size(164, 35); this.txtIp.TabIndex = 12; // // label4 // this.label4.AutoSize = true; this.label4.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(134))); this.label4.Location = new System.Drawing.Point(338, 263); this.label4.Name = "label4"; this.label4.Size = new System.Drawing.Size(51, 20); this.label4.TabIndex = 13; this.label4.Text = "端口"; // // txtPort // this.txtPort.Location = new System.Drawing.Point(418, 255); this.txtPort.Multiline = true; this.txtPort.Name = "txtPort"; this.txtPort.Size = new System.Drawing.Size(109, 35); this.txtPort.TabIndex = 14; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 15F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(724, 477); this.Controls.Add(this.txtPort); this.Controls.Add(this.label4); this.Controls.Add(this.txtIp); this.Controls.Add(this.label3); this.Controls.Add(this.button3); this.Controls.Add(this.textBox2); this.Controls.Add(this.label2); this.Controls.Add(this.label1); this.Controls.Add(this.textBox1); this.Controls.Add(this.button6); this.Controls.Add(this.button5); this.Name = "Form1"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "ModBus Tcp客户端"; this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.Form1_FormClosing); this.Load += new System.EventHandler(this.Form1_Load); this.ResumeLayout(false); this.PerformLayout(); } #endregion private System.Windows.Forms.Button button5; private System.Windows.Forms.Button button6; private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.Label label1; private System.Windows.Forms.Label label2; private System.Windows.Forms.TextBox textBox2; private System.Windows.Forms.Button button3; private System.Windows.Forms.Label label3; private System.Windows.Forms.TextBox txtIp; private System.Windows.Forms.Label label4; private System.Windows.Forms.TextBox txtPort; } }
4.源代码
using System; using System.Windows.Forms; using HslCommunication.ModBus; using HslCommunication; namespace ModbusDemo { public partial class Form1 : Form { public Form1() { InitializeComponent(); } /// <summary> /// 初始化类 /// </summary> private ModbusTcpNet busTcpClient =null; /// <summary> /// 监听状态 /// </summary> private bool IsEnable = false; private void Form1_Load(object sender, EventArgs e) { txtPort.Text = "502"; txtIp.Text = "172.30.16.220"; textBox2.Text = "00141"; } /// <summary> /// 开启服务 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Button5_Click(object sender, EventArgs e) { try { if (IsEnable) { MessageBox.Show("请勿重复建立连接!"); return; } string ip = txtIp.Text.Trim(); int port = Convert.ToInt32(txtPort.Text); if (ip==null || ip=="") { MessageBox.Show("ip不能为空!"); return; } busTcpClient = new ModbusTcpNet(ip, port, 0x01); OperateResult res = busTcpClient.ConnectServer(); if (res.IsSuccess==true) //接收状态返回值 { IsEnable = true; MessageBox.Show("开启连接成功"); } else { MessageBox.Show("开启连接失败"); } } catch (Exception ex) { MessageBox.Show("开启连接失败!", ex.Message.ToString()); } } private void Button6_Click(object sender, EventArgs e) { try { if (!IsEnable) { MessageBox.Show("尚未建立连接!"); return; } busTcpClient.ConnectClose(); IsEnable = false; MessageBox.Show("关闭连接成功!"); } catch (Exception ex) { MessageBox.Show("关闭连接失败!", ex.Message.ToString()); } } private void Form1_FormClosing(object sender, FormClosingEventArgs e) { Application.Exit(); } private void Button3_Click(object sender, EventArgs e) { try { if (!IsEnable) { MessageBox.Show("尚未建立连接!"); return; } if (busTcpClient == null) { MessageBox.Show("尚未初始化对象!"); return; } string txt = textBox2.Text.Trim(); if (txt=="") { MessageBox.Show("地址不能为空!"); return; } bool coil100 = busTcpClient.ReadCoil(txt).Content; // 读取线圈100的通断 textBox1.Text = ""; MessageBox.Show("监听成功!"); textBox1.Text = coil100 == true ? "true" : "false"; } catch (Exception ex) { MessageBox.Show(ex.Message.ToString()); } } } }
5.对源码进行加注释和说明
在之前的文章中《modbus调试工具的使用》,并且根据IP进行模拟通信这个方法配置完成后,这是前提。
5.1打开Modbus Slave,按F8进入这个界面,函数选择线圈,数量选择20,点击ok
5.2 同理也打开Modbus Poll,按F8进入这个界面,函数选择线圈,数量选择20,点击ok
5.3这时他们可以进行通信了,修改其中一个参数,另一个软件也会进行变化
5.4源代码从上到下,注释说明
6.所有注释说明过的代码
using System; using System.Windows.Forms; using HslCommunication.ModBus; using HslCommunication; namespace ModbusDemo { public partial class Form1 : Form { public Form1() { InitializeComponent(); } /// <summary> /// 初始化类 /// </summary> private ModbusTcpNet busTcpClient = null; /// <summary> /// 监听状态 /// </summary> private bool IsEnable = false; private void Form1_Load(object sender, EventArgs e) { txtPort.Text = "502";//这里是端口号 txtIp.Text = "127.0.0.1";//这里是本机的IP地址,原配置是172.30.16.220,修改成127.0.0.1 //这里的值,先看第二列,00000,第一列是别名,就和sql语句中的as是一样的。 //再看行0,1,2,3,4,5,6,7,8,9 //列值和行值组合在一起,就是我们要的地址。例如00001 00002 00003 00004 以此类推,第一列到00009,第二列到00019。 //所以,这里我们要读谁的值,或者写入谁的值,就写入谁的地址。 textBox2.Text = "00002"; } /// <summary> /// 开启服务 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Button5_Click(object sender, EventArgs e) { try { if (IsEnable) { MessageBox.Show("请勿重复建立连接!"); return; } string ip = txtIp.Text.Trim(); int port = Convert.ToInt32(txtPort.Text); if (ip == null || ip == "") { MessageBox.Show("ip不能为空!"); return; } busTcpClient = new ModbusTcpNet(ip, port, 0x01); OperateResult res = busTcpClient.ConnectServer(); if (res.IsSuccess == true) //接收状态返回值 { IsEnable = true; MessageBox.Show("开启连接成功"); } else { MessageBox.Show("开启连接失败"); } } catch (Exception ex) { MessageBox.Show("开启连接失败!", ex.Message.ToString()); } } private void Button6_Click(object sender, EventArgs e) { try { if (!IsEnable) { MessageBox.Show("尚未建立连接!"); return; } busTcpClient.ConnectClose(); IsEnable = false; MessageBox.Show("关闭连接成功!"); } catch (Exception ex) { MessageBox.Show("关闭连接失败!", ex.Message.ToString()); } } private void Form1_FormClosing(object sender, FormClosingEventArgs e) { Application.Exit(); } private void Button3_Click(object sender, EventArgs e) { try { if (!IsEnable) { MessageBox.Show("尚未建立连接!"); return; } if (busTcpClient == null) { MessageBox.Show("尚未初始化对象!"); return; } string txt = textBox2.Text.Trim(); if (txt == "") { MessageBox.Show("地址不能为空!"); return; } bool coil100 = busTcpClient.ReadCoil(txt).Content; // 这里写谁的地址,读的就是谁的值 textBox1.Text = ""; MessageBox.Show("监听成功!"); textBox1.Text = coil100 == true ? "true" : "false"; // 读取操作,以下txt写谁,读取的就是谁的值 bool coil1001 = busTcpClient.ReadCoil(txt).Content; // 读取线圈100的通断 short short100 = busTcpClient.ReadInt16(txt).Content; // 读取寄存器100的short值 ushort ushort100 = busTcpClient.ReadUInt16(txt).Content; // 读取寄存器100的ushort值 int int100 = busTcpClient.ReadInt32(txt).Content; // 读取寄存器100-101的int值 uint uint100 = busTcpClient.ReadUInt32(txt).Content; // 读取寄存器100-101的uint值 float float100 = busTcpClient.ReadFloat(txt).Content; // 读取寄存器100-101的float值 long long100 = busTcpClient.ReadInt64(txt).Content; // 读取寄存器100-103的long值 ulong ulong100 = busTcpClient.ReadUInt64(txt).Content; // 读取寄存器100-103的ulong值 string str100 = busTcpClient.ReadString(txt, 5).Content;// 读取100到104共10个字符的字符串 // 写入操作,以下txt写谁,就是写入谁的值 busTcpClient.WriteCoil(txt, true);// 写入线圈100为通 busTcpClient.Write(txt, (short)12345);// 写入寄存器100为12345 busTcpClient.Write(txt, (ushort)45678);// 写入寄存器100为45678 busTcpClient.Write(txt, 123456789);// 写入寄存器100-101为123456789 busTcpClient.Write(txt, (uint)123456778);// 写入寄存器100-101为123456778 busTcpClient.Write(txt, 123.456);// 写入寄存器100-101为123.456 busTcpClient.Write(txt, 12312312312414L);//写入寄存器100-103为一个大数据 busTcpClient.Write(txt, 12634534534543656UL);// 写入寄存器100-103为一个大数据 busTcpClient.Write(txt, 123.456d);// 写入寄存器100-103为一个双精度的数据 busTcpClient.Write(txt, "K123456789"); } catch (Exception ex) { MessageBox.Show(ex.Message.ToString()); } } } }
7. 效果。最后我们进行读取和写入的验证
读取
读取00002地址的值,成功
写入
写入00001的值,还未写入的时候是0
写入后,0变成1
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