2015-07-09 update 1

Modbus.Net/ModBus.Net/SimenseUtility.cs

@@ -95,6 +95,8 @@ namespace ModBus.Net
         }
 
         protected override byte[] GetDatas(byte belongAddress, byte materAddress, string startAddress, int getByteCount)
+        {
+            try
             {
                 var readRequestSimenseInputStruct = new ReadRequestSimenseInputStruct(0xd3c7, SimenseTypeCode.Byte, startAddress, (ushort)getByteCount, AddressTranslator);
                 var readRequestSimenseOutputStruct =
@@ -102,8 +104,16 @@ namespace ModBus.Net
                          Wrapper.SendReceive(Wrapper[typeof(ReadRequestSimenseProtocal)], readRequestSimenseInputStruct);
                 return readRequestSimenseOutputStruct.GetValue;
             }
+            catch (Exception)
+            {
+                return null;
+            }
+            
+        }
 
         public override bool SetDatas(byte belongAddress, byte materAddress, string startAddress, object[] setContents)
+        {
+            try
             {
                 var writeRequestSimenseInputStruct = new WriteRequestSimenseInputStruct(0xd3c8, startAddress, setContents, AddressTranslator);
                 var writeRequestSimenseOutputStruct =
@@ -114,6 +124,12 @@ namespace ModBus.Net
                 else
                     return false;
             }
+            catch (Exception)
+            {
+                return false;
+            }
+            
+        }
 
         public override DateTime GetTime(byte belongAddress)
         {