modbus tcp

ModbusStudy/CommClient/Client/ICommClient.cs

@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace CommClient.Client
+namespace MasterClient.Client
 {
 	interface ICommClient
 	{

ModbusStudy/CommClient/Client/ModbusMaster.cs

@@ -5,46 +5,134 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace CommClient.Client
+namespace MasterClient.Client
 {
 	class ModbusMaster : ICommClient
 	{
 		private ModbusClient client;
-		private int UINIT_IDENTIFIER = 1;
 
-		public ModbusMaster()
+		public byte identifier = 1;
+
+		public ModbusMaster(byte identifier = 1)
 		{
 			client = new ModbusClient();
+			this.identifier = identifier;
 		}
 
 		public void Connect()
 		{
-			throw new NotImplementedException();
+			try
+			{
+				if (client.Connected)
+					client.Disconnect();
+
+				client.Connect();
+			}
+			catch (Exception ex)
+			{
+				throw ex;
+			}
 		}
 
 		public void Disconnect()
 		{
-			throw new NotImplementedException();
+			try
+			{
+				client.Disconnect();
+			}
+			 catch (Exception ex)
+			{
+				throw ex;
+			}
 		}
 
 		public bool GetStatus()
 		{
-			throw new NotImplementedException();
+			if (client == null)
+				return false;
+
+			return client.Connected;
 		}
 
 		public string ReadValue(string name)
 		{
-			throw new NotImplementedException();
+			if (!client.Connected)
+				throw new Exception("Disconnected status");
+
+			try
+			{
+				int address;
+
+				if (!int.TryParse(name, out address))
+					throw new Exception("cannot parse as int");
+
+				string value = "";
+				if (address >= 40001 && address < 50000)
+					value = client.ReadHoldingRegisters(address - 40001, 1)[0].ToString();
+				else if (address >= 30001 && address < 40000)
+					value = client.ReadInputRegisters(address - 30001, 1)[0].ToString();
+				else if (address >= 10001 && address < 20000)
+					value = client.ReadInputRegisters(address - 10001, 1)[0].ToString();
+				else if (address >= 1 && address < 10000)
+					value = client.ReadCoils(address - 1, 1)[0].ToString();
+				else
+					throw new Exception("Address is unavailable. (0x, 1x, 3x, 4x only)");
+
+				return value;
+			}
+			catch (Exception ex)
+			{
+				throw ex;
+			}
 		}
 
 		public void SetServer(string ip, int port)
 		{
-			throw new NotImplementedException();
+			client.IPAddress = ip;
+			client.Port = port;
+			client.UnitIdentifier = this.identifier;
 		}
 
 		public void WriteValue(string name, string value)
 		{
-			throw new NotImplementedException();
+			if (!client.Connected)
+				throw new Exception("Disconnected status");
+
+			try
+			{
+				// 0x, 4x 만 쓰기 가능
+				int address;
+
+				if (!int.TryParse(name, out address))
+					throw new Exception("Cannot parse as int");
+
+				if (address >= 40001 && address < 50000)
+				{
+					int parsed = 0;
+					if (!int.TryParse(value, out parsed))
+						throw new Exception("Value is not integer");
+
+					client.WriteSingleRegister(address - 40001, parsed);
+				}
+				else if (address >= 1 && address < 10000)
+				{
+					bool parsed = false;
+					if (value == "0")
+						parsed = false;
+					else if (value == "1")
+						parsed = true;
+					else if (!bool.TryParse(value, out parsed))
+						throw new Exception("Value is not boolean");
+
+					client.WriteSingleCoil(address - 1, parsed);
+				}
+				else
+					throw new Exception("Address is unavailable (0x, 4x only)");
+			}
+			catch (Exception ex)
+			{
+				throw ex;
+			}
 		}
 	}
 }

ModbusStudy/CommClient/MainForm.Designer.cs

@@ -1,5 +1,5 @@
 
-namespace CommClient
+namespace MasterClient
 {
 	partial class MainForm
 	{
@@ -29,11 +29,14 @@ namespace CommClient
 		/// </summary>
 		private void InitializeComponent()
 		{
+			System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
 			this.groupBox1 = new System.Windows.Forms.GroupBox();
 			this.btnDisconnect = new System.Windows.Forms.Button();
 			this.tbIP = new System.Windows.Forms.TextBox();
 			this.btnConnect = new System.Windows.Forms.Button();
+			this.nudIdentifier = new System.Windows.Forms.NumericUpDown();
 			this.nudPort = new System.Windows.Forms.NumericUpDown();
+			this.label7 = new System.Windows.Forms.Label();
 			this.label3 = new System.Windows.Forms.Label();
 			this.label2 = new System.Windows.Forms.Label();
 			this.tbStatus = new System.Windows.Forms.TextBox();
@@ -52,19 +55,17 @@ namespace CommClient
 			this.label6 = new System.Windows.Forms.Label();
 			this.tbWriteName = new System.Windows.Forms.TextBox();
 			this.label5 = new System.Windows.Forms.Label();
-			this.groupBox4 = new System.Windows.Forms.GroupBox();
+			this.gbMode = new System.Windows.Forms.GroupBox();
 			this.chkSdk = new System.Windows.Forms.RadioButton();
 			this.chkOPCUA = new System.Windows.Forms.RadioButton();
 			this.chkModbus = new System.Windows.Forms.RadioButton();
-			this.label7 = new System.Windows.Forms.Label();
-			this.nudAddress = new System.Windows.Forms.NumericUpDown();
 			this.groupBox1.SuspendLayout();
+			((System.ComponentModel.ISupportInitialize)(this.nudIdentifier)).BeginInit();
 			((System.ComponentModel.ISupportInitialize)(this.nudPort)).BeginInit();
 			this.groupBox5.SuspendLayout();
 			this.groupBox2.SuspendLayout();
 			this.groupBox3.SuspendLayout();
-			this.groupBox4.SuspendLayout();
+			this.gbMode.SuspendLayout();
-			((System.ComponentModel.ISupportInitialize)(this.nudAddress)).BeginInit();
 			this.SuspendLayout();
 			// 
 			// groupBox1
@@ -72,7 +73,7 @@ namespace CommClient
 			this.groupBox1.Controls.Add(this.btnDisconnect);
 			this.groupBox1.Controls.Add(this.tbIP);
 			this.groupBox1.Controls.Add(this.btnConnect);
-			this.groupBox1.Controls.Add(this.nudAddress);
+			this.groupBox1.Controls.Add(this.nudIdentifier);
 			this.groupBox1.Controls.Add(this.nudPort);
 			this.groupBox1.Controls.Add(this.label7);
 			this.groupBox1.Controls.Add(this.label3);
@@ -120,6 +121,25 @@ namespace CommClient
 			this.btnConnect.Text = "Connect";
 			this.btnConnect.UseVisualStyleBackColor = true;
 			this.btnConnect.Click += new System.EventHandler(this.btnConnect_Click);
+			// 
+			// nudIdentifier
+			// 
+			this.nudIdentifier.Location = new System.Drawing.Point(78, 123);
+			this.nudIdentifier.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+			this.nudIdentifier.Maximum = new decimal(new int[] {
+            65535,
+            0,
+            0,
+            0});
+			this.nudIdentifier.Name = "nudIdentifier";
+			this.nudIdentifier.Size = new System.Drawing.Size(156, 23);
+			this.nudIdentifier.TabIndex = 9;
+			this.nudIdentifier.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
+			this.nudIdentifier.Value = new decimal(new int[] {
+            1,
+            0,
+            0,
+            0});
 			// 
 			// nudPort
 			// 
@@ -139,6 +159,15 @@ namespace CommClient
             0,
             0,
             0});
+			// 
+			// label7
+			// 
+			this.label7.AutoSize = true;
+			this.label7.Location = new System.Drawing.Point(4, 129);
+			this.label7.Name = "label7";
+			this.label7.Size = new System.Drawing.Size(54, 15);
+			this.label7.TabIndex = 5;
+			this.label7.Text = "Identifier";
 			// 
 			// label3
 			// 
@@ -340,19 +369,19 @@ namespace CommClient
 			this.label5.TabIndex = 6;
 			this.label5.Text = "Tag name/Id";
 			// 
-			// groupBox4
+			// gbMode
 			// 
-			this.groupBox4.Controls.Add(this.chkSdk);
+			this.gbMode.Controls.Add(this.chkSdk);
-			this.groupBox4.Controls.Add(this.chkOPCUA);
+			this.gbMode.Controls.Add(this.chkOPCUA);
-			this.groupBox4.Controls.Add(this.chkModbus);
+			this.gbMode.Controls.Add(this.chkModbus);
-			this.groupBox4.Location = new System.Drawing.Point(13, 453);
+			this.gbMode.Location = new System.Drawing.Point(13, 453);
-			this.groupBox4.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+			this.gbMode.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
-			this.groupBox4.Name = "groupBox4";
+			this.gbMode.Name = "gbMode";
-			this.groupBox4.Padding = new System.Windows.Forms.Padding(3, 4, 3, 4);
+			this.gbMode.Padding = new System.Windows.Forms.Padding(3, 4, 3, 4);
-			this.groupBox4.Size = new System.Drawing.Size(240, 64);
+			this.gbMode.Size = new System.Drawing.Size(240, 64);
-			this.groupBox4.TabIndex = 0;
+			this.gbMode.TabIndex = 0;
-			this.groupBox4.TabStop = false;
+			this.gbMode.TabStop = false;
-			this.groupBox4.Text = "Mode";
+			this.gbMode.Text = "Mode";
 			// 
 			// chkSdk
 			// 
@@ -388,34 +417,6 @@ namespace CommClient
 			this.chkModbus.TabStop = true;
 			this.chkModbus.Text = "Modbus";
 			this.chkModbus.UseVisualStyleBackColor = true;
-			// 
-			// label7
-			// 
-			this.label7.AutoSize = true;
-			this.label7.Location = new System.Drawing.Point(4, 129);
-			this.label7.Name = "label7";
-			this.label7.Size = new System.Drawing.Size(49, 15);
-			this.label7.TabIndex = 5;
-			this.label7.Text = "Address";
-			// 
-			// nudAddress
-			// 
-			this.nudAddress.Location = new System.Drawing.Point(78, 123);
-			this.nudAddress.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
-			this.nudAddress.Maximum = new decimal(new int[] {
-            65535,
-            0,
-            0,
-            0});
-			this.nudAddress.Name = "nudAddress";
-			this.nudAddress.Size = new System.Drawing.Size(156, 23);
-			this.nudAddress.TabIndex = 9;
-			this.nudAddress.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
-			this.nudAddress.Value = new decimal(new int[] {
-            1,
-            0,
-            0,
-            0});
 			// 
 			// MainForm
 			// 
@@ -424,17 +425,19 @@ namespace CommClient
 			this.BackColor = System.Drawing.Color.White;
 			this.ClientSize = new System.Drawing.Size(690, 528);
 			this.Controls.Add(this.groupBox5);
-			this.Controls.Add(this.groupBox4);
+			this.Controls.Add(this.gbMode);
 			this.Controls.Add(this.groupBox3);
 			this.Controls.Add(this.groupBox2);
 			this.Controls.Add(this.groupBox1);
 			this.Font = new System.Drawing.Font("맑은 고딕", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(129)));
 			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
+			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
 			this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.Name = "MainForm";
 			this.Text = "Comm Client";
 			this.groupBox1.ResumeLayout(false);
 			this.groupBox1.PerformLayout();
+			((System.ComponentModel.ISupportInitialize)(this.nudIdentifier)).EndInit();
 			((System.ComponentModel.ISupportInitialize)(this.nudPort)).EndInit();
 			this.groupBox5.ResumeLayout(false);
 			this.groupBox5.PerformLayout();
@@ -442,9 +445,8 @@ namespace CommClient
 			this.groupBox2.PerformLayout();
 			this.groupBox3.ResumeLayout(false);
 			this.groupBox3.PerformLayout();
-			this.groupBox4.ResumeLayout(false);
+			this.gbMode.ResumeLayout(false);
-			this.groupBox4.PerformLayout();
+			this.gbMode.PerformLayout();
-			((System.ComponentModel.ISupportInitialize)(this.nudAddress)).EndInit();
 			this.ResumeLayout(false);
 
 		}
@@ -461,7 +463,7 @@ namespace CommClient
 		private System.Windows.Forms.Label label1;
 		private System.Windows.Forms.GroupBox groupBox2;
 		private System.Windows.Forms.GroupBox groupBox3;
-		private System.Windows.Forms.GroupBox groupBox4;
+		private System.Windows.Forms.GroupBox gbMode;
 		private System.Windows.Forms.Button btnRead;
 		private System.Windows.Forms.TextBox tbReadName;
 		private System.Windows.Forms.Label label4;
@@ -478,7 +480,7 @@ namespace CommClient
 		private System.Windows.Forms.Button btnClear;
 		private System.Windows.Forms.TextBox tbIP;
 		private System.Windows.Forms.Label label3;
-		private System.Windows.Forms.NumericUpDown nudAddress;
+		private System.Windows.Forms.NumericUpDown nudIdentifier;
 		private System.Windows.Forms.Label label7;
 	}
 }

ModbusStudy/CommClient/MainForm.cs

@@ -1,4 +1,4 @@
-using CommClient.Client;
+using MasterClient.Client;
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
@@ -9,7 +9,7 @@ using System.Text;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 
-namespace CommClient
+namespace MasterClient
 {
 	public partial class MainForm : Form
 	{
@@ -19,50 +19,22 @@ namespace CommClient
 		public MainForm()
 		{
 			InitializeComponent();
-			InitInstance();
 		}
 		
-		private void InitInstance()
+		private void ChangeStatus(bool status)
-		{
-			chkModbus.CheckedChanged += Chk_CheckedChanged;
-			chkOPCUA.CheckedChanged += Chk_CheckedChanged;
-			chkSdk.CheckedChanged += Chk_CheckedChanged;
-		}
-
-		private void Chk_CheckedChanged(object sender, EventArgs e)
 		{
-			if (!(sender as RadioButton).Checked)
+			btnConnect.Enabled = !status;
-				return;
+			tbIP.Enabled = !status;
+			nudPort.Enabled = !status;
+			nudIdentifier.Enabled = !status;
 
-			InitClient();
+			btnDisconnect.Enabled = status;
-		}
+			tbStatus.Text = status ? "Connected" : "Disconnected";
-
+			tbStatus.BackColor = status ? Color.Lime : Color.Silver;
-		private void InitClient()
-		{
-			if (client != null && client.GetStatus())
-			{
-				Log("--- Disconnect previous connection ---");
-				btnDisconnect_Click(null, null);
-			}
-
-			if (chkModbus.Checked)
-			{
-				client = new ModbusMaster();
-				Log("--- Run as Modbus mode ---");
-			}
-			else if (chkOPCUA.Checked)
-			{
-				Log("--- Run as OPCUA mode ---");
-			}
-			else if (chkSdk.Checked)
-			{
-				Log("--- Run as SDK mode ---");
-			}
-		}
 
-		private void ChangeStatus(bool status)
+			gbMode.Enabled = !status;
-		{
 
+			Log(status ? "--- Connected ---" : "--- Disconnected ---");
 		}
 
 		private void Log(string text)
@@ -91,22 +63,88 @@ namespace CommClient
 
 		private void btnConnect_Click(object sender, EventArgs e)
 		{
+			try
+			{
+				InitServer();
 
+				client.SetServer(tbIP.Text, (int)nudPort.Value);
+				client.Connect();
+
+				ChangeStatus(true);
+			}
+			catch (Exception ex)
+			{
+				Log($"[ERROR] {ex.Message}");
+			}
+		}
+
+		private void InitServer()
+		{
+			if (client != null && client.GetStatus())
+			{
+				Log("--- Disconnect previous connection ---");
+				btnDisconnect_Click(null, null);
+			}
+
+			if (chkModbus.Checked)
+			{
+				client = new Client.ModbusMaster((byte)nudIdentifier.Value);
+				Log("--- Run as Modbus mode ---");
+			}
+			else if (chkOPCUA.Checked)
+			{
+				Log("--- Run as OPCUA mode ---");
+			}
+			else if (chkSdk.Checked)
+			{
+				Log("--- Run as SDK mode ---");
+			}
 		}
 
 		private void btnDisconnect_Click(object sender, EventArgs e)
 		{
+			try
+			{
+				client.Disconnect();
 
+				ChangeStatus(false);
+			}
+			catch (Exception ex)
+			{
+				Log($"[ERROR] {ex.Message}");
+			}
 		}
 
 		private void btnRead_Click(object sender, EventArgs e)
 		{
+			try
+			{
+				if (!client.GetStatus())
+					throw new Exception("Disconneced");
 
+				string value = client.ReadValue(tbReadName.Text);
+				Log($"[READ] {tbReadName.Text}:{value}");
+			}
+			catch (Exception ex)
+			{
+				Log($"[ERROR] {ex.Message}");
+			}
 		}
 
 		private void btnWrite_Click(object sender, EventArgs e)
 		{
+			try
+			{
+				if (!client.GetStatus())
+					throw new Exception("Disconneced");
 
+				client.WriteValue(tbWriteName.Text, tbWriteValue.Text);
+				Log($"[WRITE] {tbWriteName.Text}:{tbWriteValue.Text}");
+			}
+			catch (Exception ex)
+			{
+				Log($"[ERROR] {ex.Message}");
+			}
 		}
 
 		private void btnClear_Click(object sender, EventArgs e)

ModbusStudy/CommClient/MasterClient.csproj

@@ -32,6 +32,9 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup>
+    <ApplicationIcon>Graphicloads-100-Flat-2-Arrow-next.ico</ApplicationIcon>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="EasyModbus, Version=5.6.0.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\hima.lib.easymodbus.5.6.0\lib\EasyModbus.dll</HintPath>
@@ -85,5 +88,8 @@
   <ItemGroup>
     <None Include="App.config" />
   </ItemGroup>
+  <ItemGroup>
+    <Content Include="Graphicloads-100-Flat-2-Arrow-next.ico" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>

ModbusStudy/CommClient/Program.cs

@@ -4,7 +4,7 @@ using System.Linq;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 
-namespace CommClient
+namespace MasterClient
 {
 	static class Program
 	{

ModbusStudy/CommClient/Properties/Resources.Designer.cs

@@ -9,7 +9,7 @@
 //------------------------------------------------------------------------------
 
 
-namespace CommClient.Properties
+namespace MasterClient.Properties
 {
 	/// <summary>
 	///   지역화된 문자열 등을 찾기 위한 강력한 형식의 리소스 클래스입니다.

ModbusStudy/CommClient/Properties/Settings.Designer.cs

@@ -9,7 +9,7 @@
 //------------------------------------------------------------------------------
 
 
-namespace CommClient.Properties
+namespace MasterClient.Properties
 {
 	[global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
 	[global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")]

ModbusStudy/ModbusSlave/MainForm.Designer.cs

@@ -29,10 +29,11 @@ namespace ModbusSlave
 		/// </summary>
 		private void InitializeComponent()
 		{
+			System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
 			this.groupBox1 = new System.Windows.Forms.GroupBox();
 			this.btnStop = new System.Windows.Forms.Button();
 			this.btnRun = new System.Windows.Forms.Button();
-			this.nudAddress = new System.Windows.Forms.NumericUpDown();
+			this.nudIdentifier = new System.Windows.Forms.NumericUpDown();
 			this.label3 = new System.Windows.Forms.Label();
 			this.nudPort = new System.Windows.Forms.NumericUpDown();
 			this.label2 = new System.Windows.Forms.Label();
@@ -60,7 +61,7 @@ namespace ModbusSlave
 			this.columnHeader7 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
 			this.columnHeader8 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
 			this.groupBox1.SuspendLayout();
-			((System.ComponentModel.ISupportInitialize)(this.nudAddress)).BeginInit();
+			((System.ComponentModel.ISupportInitialize)(this.nudIdentifier)).BeginInit();
 			((System.ComponentModel.ISupportInitialize)(this.nudPort)).BeginInit();
 			this.groupBox2.SuspendLayout();
 			this.tabLv.SuspendLayout();
@@ -74,7 +75,7 @@ namespace ModbusSlave
 			// 
 			this.groupBox1.Controls.Add(this.btnStop);
 			this.groupBox1.Controls.Add(this.btnRun);
-			this.groupBox1.Controls.Add(this.nudAddress);
+			this.groupBox1.Controls.Add(this.nudIdentifier);
 			this.groupBox1.Controls.Add(this.label3);
 			this.groupBox1.Controls.Add(this.nudPort);
 			this.groupBox1.Controls.Add(this.label2);
@@ -113,15 +114,15 @@ namespace ModbusSlave
 			this.btnRun.UseVisualStyleBackColor = true;
 			this.btnRun.Click += new System.EventHandler(this.btnRun_Click);
 			// 
-			// nudAddress
+			// nudIdentifier
 			// 
-			this.nudAddress.Location = new System.Drawing.Point(81, 90);
+			this.nudIdentifier.Location = new System.Drawing.Point(81, 90);
-			this.nudAddress.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+			this.nudIdentifier.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
-			this.nudAddress.Name = "nudAddress";
+			this.nudIdentifier.Name = "nudIdentifier";
-			this.nudAddress.Size = new System.Drawing.Size(156, 23);
+			this.nudIdentifier.Size = new System.Drawing.Size(156, 23);
-			this.nudAddress.TabIndex = 2;
+			this.nudIdentifier.TabIndex = 2;
-			this.nudAddress.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
+			this.nudIdentifier.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
-			this.nudAddress.Value = new decimal(new int[] {
+			this.nudIdentifier.Value = new decimal(new int[] {
             1,
             0,
             0,
@@ -132,9 +133,9 @@ namespace ModbusSlave
 			this.label3.AutoSize = true;
 			this.label3.Location = new System.Drawing.Point(7, 95);
 			this.label3.Name = "label3";
-			this.label3.Size = new System.Drawing.Size(49, 15);
+			this.label3.Size = new System.Drawing.Size(54, 15);
 			this.label3.TabIndex = 0;
-			this.label3.Text = "Address";
+			this.label3.Text = "Identifier";
 			// 
 			// nudPort
 			// 
@@ -255,11 +256,11 @@ namespace ModbusSlave
 			// tabPage1
 			// 
 			this.tabPage1.Controls.Add(this.lv0x);
-			this.tabPage1.Location = new System.Drawing.Point(4, 22);
+			this.tabPage1.Location = new System.Drawing.Point(4, 24);
 			this.tabPage1.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.tabPage1.Name = "tabPage1";
 			this.tabPage1.Padding = new System.Windows.Forms.Padding(3, 4, 3, 4);
-			this.tabPage1.Size = new System.Drawing.Size(255, 426);
+			this.tabPage1.Size = new System.Drawing.Size(255, 424);
 			this.tabPage1.TabIndex = 0;
 			this.tabPage1.Text = "0x";
 			this.tabPage1.UseVisualStyleBackColor = true;
@@ -276,7 +277,7 @@ namespace ModbusSlave
 			this.lv0x.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.lv0x.MultiSelect = false;
 			this.lv0x.Name = "lv0x";
-			this.lv0x.Size = new System.Drawing.Size(249, 418);
+			this.lv0x.Size = new System.Drawing.Size(249, 416);
 			this.lv0x.TabIndex = 0;
 			this.lv0x.UseCompatibleStateImageBehavior = false;
 			this.lv0x.View = System.Windows.Forms.View.Details;
@@ -294,11 +295,11 @@ namespace ModbusSlave
 			// tabPage2
 			// 
 			this.tabPage2.Controls.Add(this.lv1x);
-			this.tabPage2.Location = new System.Drawing.Point(4, 22);
+			this.tabPage2.Location = new System.Drawing.Point(4, 24);
 			this.tabPage2.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.tabPage2.Name = "tabPage2";
 			this.tabPage2.Padding = new System.Windows.Forms.Padding(3, 4, 3, 4);
-			this.tabPage2.Size = new System.Drawing.Size(255, 426);
+			this.tabPage2.Size = new System.Drawing.Size(255, 424);
 			this.tabPage2.TabIndex = 1;
 			this.tabPage2.Text = "1x";
 			this.tabPage2.UseVisualStyleBackColor = true;
@@ -315,7 +316,7 @@ namespace ModbusSlave
 			this.lv1x.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.lv1x.MultiSelect = false;
 			this.lv1x.Name = "lv1x";
-			this.lv1x.Size = new System.Drawing.Size(249, 418);
+			this.lv1x.Size = new System.Drawing.Size(249, 416);
 			this.lv1x.TabIndex = 1;
 			this.lv1x.UseCompatibleStateImageBehavior = false;
 			this.lv1x.View = System.Windows.Forms.View.Details;
@@ -333,11 +334,11 @@ namespace ModbusSlave
 			// tabPage3
 			// 
 			this.tabPage3.Controls.Add(this.lv3x);
-			this.tabPage3.Location = new System.Drawing.Point(4, 22);
+			this.tabPage3.Location = new System.Drawing.Point(4, 24);
 			this.tabPage3.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.tabPage3.Name = "tabPage3";
 			this.tabPage3.Padding = new System.Windows.Forms.Padding(3, 4, 3, 4);
-			this.tabPage3.Size = new System.Drawing.Size(255, 426);
+			this.tabPage3.Size = new System.Drawing.Size(255, 424);
 			this.tabPage3.TabIndex = 2;
 			this.tabPage3.Text = "3x";
 			this.tabPage3.UseVisualStyleBackColor = true;
@@ -354,7 +355,7 @@ namespace ModbusSlave
 			this.lv3x.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.lv3x.MultiSelect = false;
 			this.lv3x.Name = "lv3x";
-			this.lv3x.Size = new System.Drawing.Size(249, 418);
+			this.lv3x.Size = new System.Drawing.Size(249, 416);
 			this.lv3x.TabIndex = 1;
 			this.lv3x.UseCompatibleStateImageBehavior = false;
 			this.lv3x.View = System.Windows.Forms.View.Details;
@@ -419,12 +420,13 @@ namespace ModbusSlave
 			this.Controls.Add(this.groupBox1);
 			this.Font = new System.Drawing.Font("맑은 고딕", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(129)));
 			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
+			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
 			this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
 			this.Name = "MainForm";
 			this.Text = "Modbus Slave";
 			this.groupBox1.ResumeLayout(false);
 			this.groupBox1.PerformLayout();
-			((System.ComponentModel.ISupportInitialize)(this.nudAddress)).EndInit();
+			((System.ComponentModel.ISupportInitialize)(this.nudIdentifier)).EndInit();
 			((System.ComponentModel.ISupportInitialize)(this.nudPort)).EndInit();
 			this.groupBox2.ResumeLayout(false);
 			this.groupBox2.PerformLayout();
@@ -442,7 +444,7 @@ namespace ModbusSlave
 		private System.Windows.Forms.GroupBox groupBox1;
 		private System.Windows.Forms.Button btnStop;
 		private System.Windows.Forms.Button btnRun;
-		private System.Windows.Forms.NumericUpDown nudAddress;
+		private System.Windows.Forms.NumericUpDown nudIdentifier;
 		private System.Windows.Forms.Label label3;
 		private System.Windows.Forms.NumericUpDown nudPort;
 		private System.Windows.Forms.Label label2;

ModbusStudy/ModbusSlave/MainForm.cs

@@ -17,7 +17,7 @@ namespace ModbusSlave
 	public partial class MainForm : Form
 	{
 		private readonly int DATA_COUNT = 20;
-		private ModbusServer server;
+		private ModbusServer server = new ModbusServer();
 		private System.Timers.Timer updateTimer;
 
 		private bool isFirstLog = true;
@@ -32,8 +32,9 @@ namespace ModbusSlave
 		{
 			try
 			{
+				server = new ModbusServer();
 				server.Port = (int)nudPort.Value;
-				server.UnitIdentifier = Convert.ToByte(nudAddress.Value);
+				server.UnitIdentifier = Convert.ToByte(nudIdentifier.Value);
 
 				if (!CheckPortInUse(server.Port))
 				{
@@ -45,7 +46,7 @@ namespace ModbusSlave
 				Log("--- Server start ---");
 
 				btnRun.Enabled = false;
-				nudAddress.Enabled = false;
+				nudIdentifier.Enabled = false;
 				nudPort.Enabled = false;
 
 				tbStatus.Text = "Run";
@@ -67,7 +68,7 @@ namespace ModbusSlave
 				Log("--- Server stop ---");
 
 				btnRun.Enabled = true;
-				nudAddress.Enabled = true;
+				nudIdentifier.Enabled = true;
 				nudPort.Enabled = true;
 
 				tbStatus.Text = "Stop";

ModbusStudy/ModbusSlave/ModbusSlave.csproj

@@ -32,6 +32,9 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
+  <PropertyGroup>
+    <ApplicationIcon>Graphicloads-100-Flat-2-Arrow-previous.ico</ApplicationIcon>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="EasyModbus, Version=5.6.0.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\packages\EasyModbusTCP.5.6.0\lib\net40\EasyModbus.dll</HintPath>
@@ -92,5 +95,8 @@
   <ItemGroup>
     <None Include="App.config" />
   </ItemGroup>
+  <ItemGroup>
+    <Content Include="Graphicloads-100-Flat-2-Arrow-previous.ico" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>

ModbusStudy/ModbusStudy.sln

@@ -5,7 +5,7 @@ VisualStudioVersion = 16.0.32630.194
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ModbusSlave", "ModbusSlave\ModbusSlave.csproj", "{439FCE65-14FD-4495-96CF-C4473455249D}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CommClient", "CommClient\CommClient.csproj", "{F47D20AF-4D05-4AA5-9160-401599079F1A}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MasterClient", "CommClient\MasterClient.csproj", "{F47D20AF-4D05-4AA5-9160-401599079F1A}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution