diff --git a/TubeFeederProject/TubeFeeder/MessageProtocol.cs b/TubeFeederProject/TubeFeeder/MessageProtocol.cs
index 78a3aa4..853b55f 100644
--- a/TubeFeederProject/TubeFeeder/MessageProtocol.cs
+++ b/TubeFeederProject/TubeFeeder/MessageProtocol.cs
@@ -58,6 +58,7 @@ public class MessageProtocol
         public const byte CMD_INFORM_ACK = (byte)'A';
         public const byte CMD_INFORM_ERROR = (byte)'E';    
         public const byte CMD_INFORM_SETTING_CLOSE = (byte)'C';
+        public const byte CMD_INFORM_STARTED = (byte)'D';
 
         // 에러코드
         public const Byte ERRORCODE_SOMETHING_WRONG = 0x01;
diff --git a/TubeFeederProject/TubeFeeder/TubeFeeder.Designer.cs b/TubeFeederProject/TubeFeeder/TubeFeeder.Designer.cs
index 79be617..60b2a33 100644
--- a/TubeFeederProject/TubeFeeder/TubeFeeder.Designer.cs
+++ b/TubeFeederProject/TubeFeeder/TubeFeeder.Designer.cs
@@ -783,7 +783,7 @@ private void InitializeComponent()
             this.smartLabel_VERSION.Name = "smartLabel_VERSION";
             this.smartLabel_VERSION.Size = new System.Drawing.Size(132, 18);
             this.smartLabel_VERSION.TabIndex = 90;
-            this.smartLabel_VERSION.Text = "ver 1.6";
+            this.smartLabel_VERSION.Text = "ver 1.7";
             this.smartLabel_VERSION.TextHAlign = SmartX.SmartLabel.TextHorAlign.Left;
             this.smartLabel_VERSION.TextVAlign = SmartX.SmartLabel.TextVerAlign.Middle;
             this.smartLabel_VERSION.Wordwrap = false;
@@ -845,7 +845,7 @@ private void InitializeComponent()
             this.KeyPreview = true;
             this.Menu = this.mainMenu1;
             this.Name = "Form1";
-            this.Text = "ver1.6_20211211";
+            this.Text = "ver1.7_20220426";
             this.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.Form1_KeyPress);
             this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyDown);
             ((System.ComponentModel.ISupportInitialize)(this.smartForm1)).EndInit();
diff --git a/TubeFeederProject/TubeFeeder/TubeFeeder.cs b/TubeFeederProject/TubeFeeder/TubeFeeder.cs
index 3fe7e4d..b0ba8e8 100644
--- a/TubeFeederProject/TubeFeeder/TubeFeeder.cs
+++ b/TubeFeederProject/TubeFeeder/TubeFeeder.cs
@@ -40,6 +40,7 @@ public partial class Form1 : Form
         private bool m_isShowRestart = false;
         private bool m_isBarcodeReadMode_On = false; // 바코드 읽기모드 On
         private bool m_isAutoStopMode_On = false; // AutoStopMode On
+        private bool m_isStarted = false;
 
         private SettingValues m_settingValues;
 
@@ -346,6 +347,7 @@ private void btn_start_Click(object sender, EventArgs e)
             SendSettingValues(m_settingValues);     // setting값 보냄
 
             m_ControlBoard.SendMessage(MessageGenerator.Meesage_DeviceStart(m_isBarcodeReadMode_On, m_isAutoStopMode_On));
+            m_isStarted = true;
             setIndicatorColor(Color.Green);
             btn_barcodeOnEnable(false);
             btn_barcodeOffEnable(false);
@@ -358,6 +360,7 @@ private void btn_start_Click(object sender, EventArgs e)
         private void btn_stop_Click(object sender, EventArgs e)
         {
             m_ControlBoard.SendMessage(MessageGenerator.Meesage_DeviceStop());
+            m_isStarted = false;
             btn_barcodeOnEnable(true);
             btn_barcodeOffEnable(true);
             btn_autoStopModeOnEnable(true);
@@ -693,6 +696,14 @@ private void smartTimer1_Tick(object sender, EventArgs e)
                 ;
             }
 
+            // 10초마다 start/stop 상태 업데이트신호 보냄.
+            if (runTime.Seconds % 10 == 0) 
+            {
+                if (m_isStarted) 
+                {
+                    m_ControlBoard.SendMessage(MessageGenerator.Meesage_Infom(MessageProtocol.CMD_INFORM_STARTED));
+                }
+            }
 
             if (m_isShowRestart == true && restartDialog == null) 
             {