diff --git a/TEST/DigitalIndicator/Form1.Designer.cs b/TEST/DigitalIndicator/Form1.Designer.cs
index 31f5f84..6423d3b 100644
--- a/TEST/DigitalIndicator/Form1.Designer.cs
+++ b/TEST/DigitalIndicator/Form1.Designer.cs
@@ -156,7 +156,7 @@
             this.button3.Location = new System.Drawing.Point(17, 199);
             this.button3.Margin = new System.Windows.Forms.Padding(5, 8, 5, 8);
             this.button3.Name = "button3";
-            this.button3.Size = new System.Drawing.Size(593, 84);
+            this.button3.Size = new System.Drawing.Size(693, 84);
             this.button3.TabIndex = 9;
             this.button3.Text = "샘플데이터쓰기(40001=100 ~ 40020=0)";
             this.button3.UseVisualStyleBackColor = true;
diff --git a/TEST/DigitalIndicator/Form1.cs b/TEST/DigitalIndicator/Form1.cs
index dcce417..40ea76f 100644
--- a/TEST/DigitalIndicator/Form1.cs
+++ b/TEST/DigitalIndicator/Form1.cs
@@ -17,6 +17,7 @@ namespace DigitalIndicator
     {
         ModbusSerialMaster modbus;
         System.IO.Ports.SerialPort dev;
+
         public Form1()
         {
             InitializeComponent();
diff --git a/cVMS.NET_CS/Device/DigitalIndicator.cs b/cVMS.NET_CS/Device/DigitalIndicator.cs
index e825808..fbb12cb 100644
--- a/cVMS.NET_CS/Device/DigitalIndicator.cs
+++ b/cVMS.NET_CS/Device/DigitalIndicator.cs
@@ -10,7 +10,7 @@ namespace vmsnet
         /// <summary>
         /// default value  = 1
         /// </summary>
-        public byte SlaveID { get; set; } = 1;
+        public byte SlaveID { get; set; } = 1;  // Slave No 
 
         public DigitalIndicator(byte slaveID = 0) : base("", new RtuConfigure { BaudRate = 9600, DataBits = 8, StopBits = System.IO.Ports.StopBits.One, Parity = System.IO.Ports.Parity.None })
         {
diff --git a/cVMS.NET_CS/HMI/MainDisplay/DispCtrl.cs b/cVMS.NET_CS/HMI/MainDisplay/DispCtrl.cs
index ab98b4d..457c6a2 100644
--- a/cVMS.NET_CS/HMI/MainDisplay/DispCtrl.cs
+++ b/cVMS.NET_CS/HMI/MainDisplay/DispCtrl.cs
@@ -1086,7 +1086,7 @@ namespace vmsnet.HMI
 
                 // UI 디스플레이 중, 예외발생 문제
                 PUB.log.AddE($"NullReferenceException Message={ex1.Message}, 파일명={fileName}, 행번호={lineNumber}");
-
+                return;
             }
             catch (Exception ex2)
             {
@@ -1098,6 +1098,7 @@ namespace vmsnet.HMI
 
                 // Else Error !!!
                 PUB.log.AddE($"Exception Message={ex2.Message}, 파일명={fileName}, 행번호={lineNumber}");
+                return;
             }
         }
 
@@ -1632,7 +1633,7 @@ namespace vmsnet.HMI
 
                 // UI 디스플레이 중, 예외발생 문제
                 PUB.log.AddE($"NullReferenceException Message={ex1.Message}, 파일명={fileName}, 행번호={lineNumber}");
-
+                return;
             }
             catch (Exception ex2)
             {
@@ -1644,6 +1645,7 @@ namespace vmsnet.HMI
 
                 // Else Error !!!
                 PUB.log.AddE($"Exception Message={ex2.Message}, 파일명={fileName}, 행번호={lineNumber}");
+                return;
             }
         }
 
@@ -1866,7 +1868,7 @@ namespace vmsnet.HMI
 
                 // UI 디스플레이 중, 예외발생 문제
                 PUB.log.AddE($"NullReferenceException Message={ex1.Message}, 파일명={fileName}, 행번호={lineNumber}");
-
+                return;
             }
             catch (Exception ex2)
             {
@@ -1878,6 +1880,7 @@ namespace vmsnet.HMI
 
                 // Else Error !!!
                 PUB.log.AddE($"Exception Message={ex2.Message}, 파일명={fileName}, 행번호={lineNumber}");
+                return;
             }
         }