better connection controls

Form1.Designer.cs

@@ -30,6 +30,12 @@
         {
             System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(App));
             this.groupBox1 = new System.Windows.Forms.GroupBox();
+            this.panel8 = new System.Windows.Forms.Panel();
+            this.CBox_DataBits = new System.Windows.Forms.ComboBox();
+            this.label8 = new System.Windows.Forms.Label();
+            this.panel7 = new System.Windows.Forms.Panel();
+            this.CBox_BaudRate = new System.Windows.Forms.ComboBox();
+            this.label7 = new System.Windows.Forms.Label();
             this.ButtonConnect = new System.Windows.Forms.Button();
             this.panel2 = new System.Windows.Forms.Panel();
             this.UpDown_ModbusID = new System.Windows.Forms.NumericUpDown();
@@ -39,6 +45,9 @@
             this.label1 = new System.Windows.Forms.Label();
             this.TextBox_Log = new System.Windows.Forms.TextBox();
             this.groupBox2 = new System.Windows.Forms.GroupBox();
+            this.panel6 = new System.Windows.Forms.Panel();
+            this.UpDown_Value = new System.Windows.Forms.NumericUpDown();
+            this.label6 = new System.Windows.Forms.Label();
             this.panel5 = new System.Windows.Forms.Panel();
             this.UpDown_RegLength = new System.Windows.Forms.NumericUpDown();
             this.label5 = new System.Windows.Forms.Label();
@@ -49,35 +58,112 @@
             this.panel4 = new System.Windows.Forms.Panel();
             this.CBox_Function = new System.Windows.Forms.ComboBox();
             this.label4 = new System.Windows.Forms.Label();
+            this.panel9 = new System.Windows.Forms.Panel();
+            this.comboBox1 = new System.Windows.Forms.ComboBox();
+            this.label9 = new System.Windows.Forms.Label();
+            this.panel10 = new System.Windows.Forms.Panel();
+            this.CBox_StopBits = new System.Windows.Forms.ComboBox();
+            this.label10 = new System.Windows.Forms.Label();
+            this.panel11 = new System.Windows.Forms.Panel();
+            this.comboBox2 = new System.Windows.Forms.ComboBox();
+            this.label11 = new System.Windows.Forms.Label();
             this.groupBox1.SuspendLayout();
+            this.panel8.SuspendLayout();
+            this.panel7.SuspendLayout();
             this.panel2.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.UpDown_ModbusID)).BeginInit();
             this.panel1.SuspendLayout();
             this.groupBox2.SuspendLayout();
+            this.panel6.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.UpDown_Value)).BeginInit();
             this.panel5.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.UpDown_RegLength)).BeginInit();
             this.panel3.SuspendLayout();
             ((System.ComponentModel.ISupportInitialize)(this.UpDown_RegAddress)).BeginInit();
             this.panel4.SuspendLayout();
+            this.panel9.SuspendLayout();
+            this.panel10.SuspendLayout();
+            this.panel11.SuspendLayout();
             this.SuspendLayout();
             // 
             // groupBox1
             // 
+            this.groupBox1.Controls.Add(this.panel11);
+            this.groupBox1.Controls.Add(this.panel10);
+            this.groupBox1.Controls.Add(this.panel8);
+            this.groupBox1.Controls.Add(this.panel7);
             this.groupBox1.Controls.Add(this.ButtonConnect);
             this.groupBox1.Controls.Add(this.panel2);
             this.groupBox1.Controls.Add(this.panel1);
             this.groupBox1.Location = new System.Drawing.Point(12, 12);
             this.groupBox1.Name = "groupBox1";
-            this.groupBox1.Size = new System.Drawing.Size(344, 63);
+            this.groupBox1.Size = new System.Drawing.Size(490, 110);
             this.groupBox1.TabIndex = 0;
             this.groupBox1.TabStop = false;
             this.groupBox1.Text = "Подключение";
             // 
+            // panel8
+            // 
+            this.panel8.Controls.Add(this.panel9);
+            this.panel8.Controls.Add(this.CBox_DataBits);
+            this.panel8.Controls.Add(this.label8);
+            this.panel8.Location = new System.Drawing.Point(162, 19);
+            this.panel8.Name = "panel8";
+            this.panel8.Size = new System.Drawing.Size(79, 43);
+            this.panel8.TabIndex = 4;
+            // 
+            // CBox_DataBits
+            // 
+            this.CBox_DataBits.FormattingEnabled = true;
+            this.CBox_DataBits.Location = new System.Drawing.Point(6, 17);
+            this.CBox_DataBits.Name = "CBox_DataBits";
+            this.CBox_DataBits.Size = new System.Drawing.Size(70, 21);
+            this.CBox_DataBits.TabIndex = 2;
+            this.CBox_DataBits.Text = "8";
+            // 
+            // label8
+            // 
+            this.label8.AutoSize = true;
+            this.label8.Location = new System.Drawing.Point(3, 0);
+            this.label8.Name = "label8";
+            this.label8.Size = new System.Drawing.Size(73, 13);
+            this.label8.TabIndex = 0;
+            this.label8.Text = "Биты данных";
+            // 
+            // panel7
+            // 
+            this.panel7.Controls.Add(this.CBox_BaudRate);
+            this.panel7.Controls.Add(this.label7);
+            this.panel7.Location = new System.Drawing.Point(81, 19);
+            this.panel7.Name = "panel7";
+            this.panel7.Size = new System.Drawing.Size(75, 43);
+            this.panel7.TabIndex = 3;
+            // 
+            // CBox_BaudRate
+            // 
+            this.CBox_BaudRate.FormattingEnabled = true;
+            this.CBox_BaudRate.Location = new System.Drawing.Point(6, 17);
+            this.CBox_BaudRate.Name = "CBox_BaudRate";
+            this.CBox_BaudRate.Size = new System.Drawing.Size(65, 21);
+            this.CBox_BaudRate.TabIndex = 2;
+            this.CBox_BaudRate.Text = "9600";
+            // 
+            // label7
+            // 
+            this.label7.AutoSize = true;
+            this.label7.Location = new System.Drawing.Point(3, 0);
+            this.label7.Name = "label7";
+            this.label7.Size = new System.Drawing.Size(34, 13);
+            this.label7.TabIndex = 0;
+            this.label7.Text = "Боды";
+            // 
             // ButtonConnect
             // 
-            this.ButtonConnect.Location = new System.Drawing.Point(162, 34);
+            this.ButtonConnect.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.ButtonConnect.Location = new System.Drawing.Point(195, 75);
             this.ButtonConnect.Name = "ButtonConnect";
-            this.ButtonConnect.Size = new System.Drawing.Size(176, 23);
+            this.ButtonConnect.Size = new System.Drawing.Size(100, 25);
             this.ButtonConnect.TabIndex = 4;
             this.ButtonConnect.Text = "Подключиться";
             this.ButtonConnect.UseVisualStyleBackColor = true;
@@ -87,7 +173,7 @@
             // 
             this.panel2.Controls.Add(this.UpDown_ModbusID);
             this.panel2.Controls.Add(this.label2);
-            this.panel2.Location = new System.Drawing.Point(81, 19);
+            this.panel2.Location = new System.Drawing.Point(415, 19);
             this.panel2.Name = "panel2";
             this.panel2.Size = new System.Drawing.Size(75, 43);
             this.panel2.TabIndex = 2;
@@ -124,7 +210,7 @@
             this.CBox_Ports.Name = "CBox_Ports";
             this.CBox_Ports.Size = new System.Drawing.Size(65, 21);
             this.CBox_Ports.TabIndex = 1;
-            this.CBox_Ports.Text = "COM 1";
+            this.CBox_Ports.Text = "COM1";
             this.CBox_Ports.MouseClick += new System.Windows.Forms.MouseEventHandler(this.CBox_Ports_Click);
             // 
             // label1
@@ -138,27 +224,53 @@
             // 
             // TextBox_Log
             // 
-            this.TextBox_Log.Location = new System.Drawing.Point(12, 82);
+            this.TextBox_Log.Location = new System.Drawing.Point(12, 127);
             this.TextBox_Log.Multiline = true;
             this.TextBox_Log.Name = "TextBox_Log";
             this.TextBox_Log.ReadOnly = true;
             this.TextBox_Log.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
-            this.TextBox_Log.Size = new System.Drawing.Size(417, 87);
+            this.TextBox_Log.Size = new System.Drawing.Size(490, 118);
             this.TextBox_Log.TabIndex = 1;
             // 
             // groupBox2
             // 
+            this.groupBox2.Controls.Add(this.panel6);
             this.groupBox2.Controls.Add(this.panel5);
             this.groupBox2.Controls.Add(this.Button_SendCommand);
             this.groupBox2.Controls.Add(this.panel3);
             this.groupBox2.Controls.Add(this.panel4);
-            this.groupBox2.Location = new System.Drawing.Point(12, 175);
+            this.groupBox2.Location = new System.Drawing.Point(12, 251);
             this.groupBox2.Name = "groupBox2";
-            this.groupBox2.Size = new System.Drawing.Size(417, 63);
+            this.groupBox2.Size = new System.Drawing.Size(490, 63);
             this.groupBox2.TabIndex = 5;
             this.groupBox2.TabStop = false;
             this.groupBox2.Text = "Команды";
             // 
+            // panel6
+            // 
+            this.panel6.Controls.Add(this.UpDown_Value);
+            this.panel6.Controls.Add(this.label6);
+            this.panel6.Location = new System.Drawing.Point(337, 20);
+            this.panel6.Name = "panel6";
+            this.panel6.Size = new System.Drawing.Size(75, 43);
+            this.panel6.TabIndex = 4;
+            // 
+            // UpDown_Value
+            // 
+            this.UpDown_Value.Location = new System.Drawing.Point(6, 17);
+            this.UpDown_Value.Name = "UpDown_Value";
+            this.UpDown_Value.Size = new System.Drawing.Size(66, 20);
+            this.UpDown_Value.TabIndex = 1;
+            // 
+            // label6
+            // 
+            this.label6.AutoSize = true;
+            this.label6.Location = new System.Drawing.Point(3, 0);
+            this.label6.Name = "label6";
+            this.label6.Size = new System.Drawing.Size(55, 13);
+            this.label6.TabIndex = 0;
+            this.label6.Text = "Значение";
+            // 
             // panel5
             // 
             this.panel5.Controls.Add(this.UpDown_RegLength);
@@ -186,7 +298,7 @@
             // 
             // Button_SendCommand
             // 
-            this.Button_SendCommand.Location = new System.Drawing.Point(337, 35);
+            this.Button_SendCommand.Location = new System.Drawing.Point(415, 35);
             this.Button_SendCommand.Name = "Button_SendCommand";
             this.Button_SendCommand.Size = new System.Drawing.Size(71, 23);
             this.Button_SendCommand.TabIndex = 4;
@@ -236,6 +348,7 @@
             this.CBox_Function.Size = new System.Drawing.Size(147, 21);
             this.CBox_Function.TabIndex = 1;
             this.CBox_Function.Text = "01 - Read Coil";
+            this.CBox_Function.SelectedIndexChanged += new System.EventHandler(this.OnSelectedFunctionChanged);
             // 
             // label4
             // 
@@ -246,11 +359,92 @@
             this.label4.TabIndex = 0;
             this.label4.Text = "Функция";
             // 
+            // panel9
+            // 
+            this.panel9.Controls.Add(this.comboBox1);
+            this.panel9.Controls.Add(this.label9);
+            this.panel9.Location = new System.Drawing.Point(82, 0);
+            this.panel9.Name = "panel9";
+            this.panel9.Size = new System.Drawing.Size(79, 43);
+            this.panel9.TabIndex = 5;
+            // 
+            // comboBox1
+            // 
+            this.comboBox1.FormattingEnabled = true;
+            this.comboBox1.Location = new System.Drawing.Point(6, 17);
+            this.comboBox1.Name = "comboBox1";
+            this.comboBox1.Size = new System.Drawing.Size(70, 21);
+            this.comboBox1.TabIndex = 2;
+            this.comboBox1.Text = "8";
+            // 
+            // label9
+            // 
+            this.label9.AutoSize = true;
+            this.label9.Location = new System.Drawing.Point(3, 0);
+            this.label9.Name = "label9";
+            this.label9.Size = new System.Drawing.Size(73, 13);
+            this.label9.TabIndex = 0;
+            this.label9.Text = "Биты данных";
+            // 
+            // panel10
+            // 
+            this.panel10.Controls.Add(this.CBox_StopBits);
+            this.panel10.Controls.Add(this.label10);
+            this.panel10.Location = new System.Drawing.Point(247, 19);
+            this.panel10.Name = "panel10";
+            this.panel10.Size = new System.Drawing.Size(79, 43);
+            this.panel10.TabIndex = 5;
+            // 
+            // CBox_StopBits
+            // 
+            this.CBox_StopBits.FormattingEnabled = true;
+            this.CBox_StopBits.Location = new System.Drawing.Point(6, 17);
+            this.CBox_StopBits.Name = "CBox_StopBits";
+            this.CBox_StopBits.Size = new System.Drawing.Size(70, 21);
+            this.CBox_StopBits.TabIndex = 2;
+            this.CBox_StopBits.Text = "8";
+            // 
+            // label10
+            // 
+            this.label10.AutoSize = true;
+            this.label10.Location = new System.Drawing.Point(3, 0);
+            this.label10.Name = "label10";
+            this.label10.Size = new System.Drawing.Size(59, 13);
+            this.label10.TabIndex = 0;
+            this.label10.Text = "Стоп-биты";
+            // 
+            // panel11
+            // 
+            this.panel11.Controls.Add(this.comboBox2);
+            this.panel11.Controls.Add(this.label11);
+            this.panel11.Location = new System.Drawing.Point(330, 19);
+            this.panel11.Name = "panel11";
+            this.panel11.Size = new System.Drawing.Size(79, 43);
+            this.panel11.TabIndex = 6;
+            // 
+            // comboBox2
+            // 
+            this.comboBox2.FormattingEnabled = true;
+            this.comboBox2.Location = new System.Drawing.Point(6, 17);
+            this.comboBox2.Name = "comboBox2";
+            this.comboBox2.Size = new System.Drawing.Size(70, 21);
+            this.comboBox2.TabIndex = 2;
+            this.comboBox2.Text = "8";
+            // 
+            // label11
+            // 
+            this.label11.AutoSize = true;
+            this.label11.Location = new System.Drawing.Point(3, 0);
+            this.label11.Name = "label11";
+            this.label11.Size = new System.Drawing.Size(59, 13);
+            this.label11.TabIndex = 0;
+            this.label11.Text = "Стоп-биты";
+            // 
             // App
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.ClientSize = new System.Drawing.Size(432, 242);
+            this.ClientSize = new System.Drawing.Size(514, 326);
             this.Controls.Add(this.groupBox2);
             this.Controls.Add(this.TextBox_Log);
             this.Controls.Add(this.groupBox1);
@@ -261,12 +455,19 @@
             this.FormClosed += new System.Windows.Forms.FormClosedEventHandler(this.App_FormClosed);
             this.Load += new System.EventHandler(this.Form1_Load);
             this.groupBox1.ResumeLayout(false);
+            this.panel8.ResumeLayout(false);
+            this.panel8.PerformLayout();
+            this.panel7.ResumeLayout(false);
+            this.panel7.PerformLayout();
             this.panel2.ResumeLayout(false);
             this.panel2.PerformLayout();
             ((System.ComponentModel.ISupportInitialize)(this.UpDown_ModbusID)).EndInit();
             this.panel1.ResumeLayout(false);
             this.panel1.PerformLayout();
             this.groupBox2.ResumeLayout(false);
+            this.panel6.ResumeLayout(false);
+            this.panel6.PerformLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.UpDown_Value)).EndInit();
             this.panel5.ResumeLayout(false);
             this.panel5.PerformLayout();
             ((System.ComponentModel.ISupportInitialize)(this.UpDown_RegLength)).EndInit();
@@ -275,6 +476,12 @@
             ((System.ComponentModel.ISupportInitialize)(this.UpDown_RegAddress)).EndInit();
             this.panel4.ResumeLayout(false);
             this.panel4.PerformLayout();
+            this.panel9.ResumeLayout(false);
+            this.panel9.PerformLayout();
+            this.panel10.ResumeLayout(false);
+            this.panel10.PerformLayout();
+            this.panel11.ResumeLayout(false);
+            this.panel11.PerformLayout();
             this.ResumeLayout(false);
             this.PerformLayout();
 
@@ -302,6 +509,24 @@
         private System.Windows.Forms.Panel panel4;
         private System.Windows.Forms.ComboBox CBox_Function;
         private System.Windows.Forms.Label label4;
+        private System.Windows.Forms.Panel panel6;
+        private System.Windows.Forms.NumericUpDown UpDown_Value;
+        private System.Windows.Forms.Label label6;
+        private System.Windows.Forms.Panel panel7;
+        private System.Windows.Forms.ComboBox CBox_BaudRate;
+        private System.Windows.Forms.Label label7;
+        private System.Windows.Forms.Panel panel8;
+        private System.Windows.Forms.ComboBox CBox_DataBits;
+        private System.Windows.Forms.Label label8;
+        private System.Windows.Forms.Panel panel10;
+        private System.Windows.Forms.ComboBox CBox_StopBits;
+        private System.Windows.Forms.Label label10;
+        private System.Windows.Forms.Panel panel9;
+        private System.Windows.Forms.ComboBox comboBox1;
+        private System.Windows.Forms.Label label9;
+        private System.Windows.Forms.Panel panel11;
+        private System.Windows.Forms.ComboBox comboBox2;
+        private System.Windows.Forms.Label label11;
     }
 }
 

Form1.cs

@@ -12,18 +12,28 @@ using System.Drawing.Drawing2D;
 using System.Threading;
 using System.Runtime;
 using System.Web;
+using System.Windows.Forms.Automation;
+using System.Diagnostics;
 
 namespace Gidrolock_Modbus_Scanner
 {
     public partial class App : Form
     {
+        public static int[] BaudRate = new int[] 
+        { 
+            110, 300, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, 76800, 115200, 230300, 460800, 921600 
+        };
+        public static int[] DataBits = new int[] { 7, 8 };
+
         int offset = 0;
-        byte[] data = new byte[255];
+        byte[] message = new byte[255];
         public bool isAwaitingResponse = false;
+        public bool isProcessingResponse = false;
         public short[] res = new short[12];
         public SerialPort port = new SerialPort();
         public int expectedLength = 0;
         
+
         public App()
         {
             InitializeComponent();
@@ -35,10 +45,45 @@ namespace Gidrolock_Modbus_Scanner
             CBox_Function.Items.Add("02 - Read Discrete Input");
             CBox_Function.Items.Add("03 - Read Holding Register");
             CBox_Function.Items.Add("04 - Read Input Register");
+            CBox_Function.Items.Add("05 - Write Single Coil");
+            CBox_Function.Items.Add("06 - Write Single Holding Register");
+            CBox_Function.Items.Add("0F - Write Multiple Coils");
+            CBox_Function.Items.Add("10 - Write Multiple Registers");
             CBox_Function.SelectedItem = CBox_Function.Items[0];
 
+            CBox_BaudRate.Items.Add("110");
+            CBox_BaudRate.Items.Add("300");
+            CBox_BaudRate.Items.Add("1200");
+            CBox_BaudRate.Items.Add("2400");
+            CBox_BaudRate.Items.Add("4800");
+            CBox_BaudRate.Items.Add("9600");
+            CBox_BaudRate.Items.Add("14400");
+            CBox_BaudRate.Items.Add("19200");
+            CBox_BaudRate.Items.Add("28800");
+            CBox_BaudRate.Items.Add("38400");
+            CBox_BaudRate.Items.Add("57600");
+            CBox_BaudRate.Items.Add("76800");
+            CBox_BaudRate.Items.Add("115200");
+            CBox_BaudRate.Items.Add("230300");
+            CBox_BaudRate.Items.Add("460800");
+            CBox_BaudRate.Items.Add("921600");
+            CBox_BaudRate.SelectedIndex = 5;
+
+            CBox_DataBits.Items.Add("7");
+            CBox_DataBits.Items.Add("8");
+            CBox_DataBits.SelectedIndex = 1;
+
+            CBox_StopBits.Items.Add("Нет");
+            CBox_StopBits.Items.Add("1");
+            CBox_StopBits.Items.Add("1.5");
+            CBox_StopBits.Items.Add("2");
+            CBox_StopBits.SelectedIndex = 1;
+
             UpDown_RegAddress.Minimum = 0;
-            UpDown_RegAddress.Maximum = 65536;
+            UpDown_RegAddress.Maximum = 65535;
+
+            UpDown_Value.Minimum = 0;
+            UpDown_Value.Maximum = 65535; // 2^16 
         }
         void App_FormClosed(object sender, FormClosedEventArgs e)
         {
@@ -69,54 +114,85 @@ namespace Gidrolock_Modbus_Scanner
             if (UpDown_ModbusID.Value == 0)
                 MessageBox.Show("Глобальное вещание пока не поддерживается");
 
-            try
+            // Port Setup
-            {
+            if (port.IsOpen)
-                if (port.IsOpen)
-                    port.Close();
-
-                port.Handshake = Handshake.None;
-                port.PortName = CBox_Ports.Text;
-                port.BaudRate = 9600;
-                port.Parity = Parity.None;
-                port.DataBits = 8;
-                port.StopBits = StopBits.One;
-
-                port.ReadTimeout = 1000;
-                port.WriteTimeout = 1000;
-
-
-                offset = 0;
-                data = new byte[255];
-                port.Open();
-
-                byte[] message = new byte[8];
-                Modbus.BuildMessage((byte)UpDown_ModbusID.Value, (byte)(1 + functionCode), address, length, ref message);
-                string messageParsed = Modbus.ParseByteArray(message);
-
-                var send = await Modbus.ReadRegAsync(port, functionCode, (byte)UpDown_ModbusID.Value, address, length);
-                AddLog("Отправка сообщения: " + messageParsed);
-                isAwaitingResponse = true;
-                Task timer = Task.Delay(2000);
-                await timer.ContinueWith(_ =>
-                {
-                    if (isAwaitingResponse)
-                    {
-                        MessageBox.Show("Истекло время ожидания ответа.", "Ошибка");
-                        port.Close();
-                    }
-                });
-
-            }
-            catch (Exception err)
-            {
                 port.Close();
-                MessageBox.Show(err.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+
+            port.Handshake = Handshake.None;
+            port.PortName = CBox_Ports.Text;
+            port.BaudRate = BaudRate[CBox_BaudRate.SelectedIndex];
+            port.Parity = Parity.None;
+            port.DataBits = DataBits[CBox_DataBits.SelectedIndex];
+            port.StopBits = (StopBits)CBox_StopBits.SelectedIndex;
+
+            port.ReadTimeout = 1000;
+            port.WriteTimeout = 1000;
+
+
+            offset = 0;
+            message = new byte[255];
+            port.Open();
+
+            /* - Reading from Registers - */
+            if (CBox_Function.SelectedIndex < 4)
+            {
+                try
+                { 
+                    byte[] request = new byte[8];
+                    Modbus.BuildMessage((byte)UpDown_ModbusID.Value, (byte)(1 + functionCode), address, length, ref request);
+                    string messageParsed = Modbus.ParseByteArray(request);
+
+                    var send = await Modbus.ReadRegAsync(port, functionCode, (byte)UpDown_ModbusID.Value, address, length);
+                    AddLog("Отправка сообщения: " + messageParsed);
+                    isAwaitingResponse = true;
+                    Task timer = Task.Delay(2000);
+                    await timer.ContinueWith(_ =>
+                    {
+                        if (isAwaitingResponse)
+                        {
+                            MessageBox.Show("Истекло время ожидания ответа.", "Ошибка");
+                            port.Close();
+                        }
+                    });
+                }
+                catch (Exception err)
+                {
+                    port.Close();
+                    MessageBox.Show(err.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
             }
+
+            /* - Writing to Registers - */
+            else
+            {
+                try
+                {
+                    if (CBox_Function.SelectedIndex < 6) // Single Registers
+                    {
+                        byte[] request = new byte[8];
+                        Modbus.BuildMessage((byte)UpDown_ModbusID.Value, (byte)(1 + functionCode), address, length, ref request);
+                        string messageParsed = Modbus.ParseByteArray(request);
+
+                        var send = await Modbus.WriteSingle(port, functionCode, (byte)UpDown_ModbusID.Value, address, (ushort)UpDown_Value.Value);
+                    }
+                    else // Multiple Registers
+                    {
+                        byte[] request = new byte[(int)UpDown_RegLength.Value * 2 + 6];
+                    }
+                }
+                catch (Exception err)
+                {
+                    port.Close();
+                    MessageBox.Show(err.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
+            }
+
         }
 
         private async void ButtonConnect_Click(object sender, EventArgs e)
         {
-            await SendMessageAsync(FunctionCode.HoldingRegister, 128, 1);
+            AddLog("Попытка подключиться к устройству Gidrolock.");
+            await SendMessageAsync(FunctionCode.DiscreteInput, 200, 5);
         }
 
         void CBox_Ports_Click(object sender, EventArgs e)
@@ -129,21 +205,38 @@ namespace Gidrolock_Modbus_Scanner
         {
             Console.WriteLine("Data receieved on Serial Port");
             isAwaitingResponse = false;
-            try
-            {
-                int len = port.BytesToRead;
-                Console.WriteLine("Data length: " + len);
-                port.Read(data, offset, len);
-                offset += len;
-                string dataCleaned = Modbus.ParseByteArray(data);
 
-                TextBox_Log.Invoke((MethodInvoker)delegate { AddLog("Получен ответ: " + dataCleaned); });
+            if (!isProcessingResponse)
-                //MessageBox.Show("Получен ответ от устройства: " + dataCleaned, "Успех", MessageBoxButtons.OK);
-            }
-            catch (Exception err)
             {
-                MessageBox.Show(err.Message);
+                isProcessingResponse = true;
+                try
+                {
+                    port.Read(message, 0, 3);
+                    int length = (int)message[2]; 
+                    for (int i = 0; i < length + 2; i++)
+                    {
+                        port.Read(message, i + 3, 1);
+                    }
+                    byte[] data = new byte[length];
+                    for (int i = 0; i < length; i++)
+                    {
+                        data[i] = message[i + 3];
+                    }
+                    Console.WriteLine("Data: " + Modbus.ParseByteArray(data));
+                    string dataCleaned = Modbus.ParseByteArray(message);
+
+                    TextBox_Log.Invoke((MethodInvoker)delegate { AddLog("Получен ответ: " + dataCleaned); });
+                    TextBox_Log.Invoke((MethodInvoker)delegate { AddLog("ASCII: " + "wip"); });
+                    //MessageBox.Show("Получен ответ от устройства: " + dataCleaned, "Успех", MessageBoxButtons.OK);
+                    port.DiscardInBuffer();
+                    isProcessingResponse = false;
+                }
+                catch (Exception err)
+                {
+                    MessageBox.Show(err.Message);
+                }
             }
+
             //port.Close();
             
         }
@@ -161,7 +254,21 @@ namespace Gidrolock_Modbus_Scanner
 
             await SendMessageAsync(functionCode, address, length);
         }
+
+        private void OnSelectedFunctionChanged(object sender, EventArgs e)
+        {
+            if (CBox_Function.SelectedIndex < 4)
+                UpDown_Value.Enabled = false;
+            else
+            {
+                if (CBox_Function.SelectedIndex == 4 || CBox_Function.SelectedIndex == 6)
+                    UpDown_Value.Maximum = 1;
+                else UpDown_Value.Maximum = 65535;
+
+                UpDown_Value.Enabled = true;
+            }
+        }
     }
 }   
 
-public enum FunctionCode { Coil, DiscreteInput, HoldingRegister, InputRegister}
+public enum FunctionCode { Coil, DiscreteInput, HoldingRegister, InputRegister, WriteCoil, WriteRegister, WriteMultCoils, WriteMultRegisters };

Modbus.cs

@@ -62,7 +62,7 @@ namespace Gidrolock_Modbus_Scanner
         }
         #endregion
 
-        #region Function 3 - Read Holding Registers
+        #region Read Functions
         public static async Task<bool> ReadRegAsync(SerialPort port, FunctionCode functionCode, byte address, ushort start, ushort length)
         {
             //Ensure port is open:
@@ -100,6 +100,48 @@ namespace Gidrolock_Modbus_Scanner
         }
         #endregion
 
+        #region Write Single Coil/Register
+        public static async Task<bool> WriteSingle(SerialPort port, FunctionCode functionCode, byte address, ushort start, uint value)
+        {
+            MessageBox.Show("Not implemented");
+            return false;
+            /*
+            if (port.IsOpen)
+            {
+                //Clear in/out buffers:
+                port.DiscardOutBuffer();
+                port.DiscardInBuffer();
+            }
+            else
+            {
+                MessageBox.Show("Порт не открыт");
+                return false;
+            }
+            */
+        }
+
+        public static bool ParseResponse(byte[] res, ref string verbose)
+        {
+            try
+            {
+                int dataLength = (int)res[2];
+                if (res.Length < dataLength + 4)
+                {
+                    verbose = "Сообщение устройства не соответствует ожидаемой длине!";
+                    return false;
+                }
+
+                //TODO: Check CRC
+                return true;
+            }
+            catch
+            {
+                verbose = "Сообщение устройства не соответствует ожидаемой длине!";
+                return false;
+            }
+            
+        }
+
         /// <summary>
         /// Parses a byte array into a string.
         /// </summary>

README.md

@@ -1,8 +1,12 @@
 # Gidrolock Modbus Scanner
 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Modbus <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Gidrolock.
-<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Holding Register'<27> 128 (Modbus ID). <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> "<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>" <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Holding Register'<27> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> `128` (<28><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Modbus ID <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Gidrolock). 
+
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>.
 
 ## To-Do
-1. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>/<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+1. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+2. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 2. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> `.json` <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
-3. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
+3. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>