diff --git a/Modbus.Net/ModBus.Net/ModBus.Net.csproj b/Modbus.Net/ModBus.Net/ModBus.Net.csproj
index da83504..94c37aa 100644
--- a/Modbus.Net/ModBus.Net/ModBus.Net.csproj
+++ b/Modbus.Net/ModBus.Net/ModBus.Net.csproj
@@ -45,6 +45,7 @@
     <Compile Include="BaseProtocal.cs" />
     <Compile Include="BaseUtility.cs" />
     <Compile Include="ComConnector.cs" />
+    <Compile Include="ModbusProtocalLinkerBytesExtend.cs" />
     <Compile Include="ModbusUtility.cs" />
     <Compile Include="ComProtocalLinker.cs" />
     <Compile Include="ConfigurationManager.Designer.cs">
diff --git a/Modbus.Net/ModBus.Net/ModbusProtocalLinkerBytesExtend.cs b/Modbus.Net/ModBus.Net/ModbusProtocalLinkerBytesExtend.cs
new file mode 100644
index 0000000..da2ebd2
--- /dev/null
+++ b/Modbus.Net/ModBus.Net/ModbusProtocalLinkerBytesExtend.cs
@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ModBus.Net
+{
+    /// <summary>
+    /// Tcp协议字节伸缩
+    /// </summary>
+    public class ModbusTcpProtocalLinkerBytesExtend : ProtocalLinkerBytesExtend
+    {
+        public override byte[] BytesExtend(byte[] content)
+        {
+            //Modbus/Tcp协议扩张，前面加6个字节，前面4个为0，后面两个为协议整体内容的长度
+            byte[] newFormat = new byte[6 + content.Length];
+            int tag = 0;
+            ushort leng = (ushort)content.Length;
+            Array.Copy(ValueHelper.Instance.GetBytes(tag), 0, newFormat, 0, 4);
+            Array.Copy(ValueHelper.Instance.GetBytes(leng), 0, newFormat, 4, 2);
+            Array.Copy(content, 0, newFormat, 6, content.Length);
+            return newFormat;
+        }
+
+        public override byte[] BytesDecact(byte[] content)
+        {
+            //Modbus/Tcp协议收缩，抛弃前面6个字节的内容
+            byte[] newContent = new byte[content.Length - 6];
+            Array.Copy(content, 6, newContent, 0, newContent.Length);
+            return newContent;
+        }
+    }
+
+    public class ModbusRtuProtocalLinkerBytesExtend : ProtocalLinkerBytesExtend
+    {
+        public override byte[] BytesExtend(byte[] content)
+        {
+            byte[] crc = new byte[2];
+            //Modbus/Rtu协议扩张，增加CRC校验
+            byte[] newFormat = new byte[content.Length + 2];
+            Crc16.GetInstance().GetCRC(content, ref crc);
+            Array.Copy(content, 0, newFormat, 0, content.Length);
+            Array.Copy(crc, 0, newFormat, newFormat.Length - 2, crc.Length);
+            return newFormat;
+        }
+
+        public override byte[] BytesDecact(byte[] content)
+        {
+            //Modbus/Rtu协议收缩，抛弃后面1个字节的内容
+            byte[] newContent = new byte[content.Length - 2];
+            Array.Copy(content, 0, newContent, 0, newContent.Length);
+            return newContent;
+        }
+    }
+}
diff --git a/Modbus.Net/ModBus.Net/ProtocalLinkerBytesExtend.cs b/Modbus.Net/ModBus.Net/ProtocalLinkerBytesExtend.cs
index fda64f4..511e6e2 100644
--- a/Modbus.Net/ModBus.Net/ProtocalLinkerBytesExtend.cs
+++ b/Modbus.Net/ModBus.Net/ProtocalLinkerBytesExtend.cs
@@ -25,52 +25,4 @@ namespace ModBus.Net
         /// <returns>收缩后的协议内容</returns>
         public abstract byte[] BytesDecact(byte[] content);
     }
-    
-    /// <summary>
-    /// Tcp协议字节伸缩
-    /// </summary>
-    public class ModbusTcpProtocalLinkerBytesExtend : ProtocalLinkerBytesExtend
-    {
-        public override byte[] BytesExtend(byte[] content)
-        {
-            //Modbus/Tcp协议扩张，前面加6个字节，前面4个为0，后面两个为协议整体内容的长度
-            byte[] newFormat = new byte[6 + content.Length];
-            int tag = 0;
-            ushort leng = (ushort)content.Length;
-            Array.Copy(ValueHelper.Instance.GetBytes(tag), 0, newFormat, 0, 4);
-            Array.Copy(ValueHelper.Instance.GetBytes(leng), 0, newFormat, 4, 2);
-            Array.Copy(content, 0, newFormat, 6, content.Length);
-            return newFormat;
-        }
-
-        public override byte[] BytesDecact(byte[] content)
-        {
-            //Modbus/Tcp协议收缩，抛弃前面6个字节的内容
-            byte[] newContent = new byte[content.Length - 6];
-            Array.Copy(content, 6, newContent, 0, newContent.Length);
-            return newContent;
-        }
-    }
-
-    public class ModbusRtuProtocalLinkerBytesExtend : ProtocalLinkerBytesExtend
-    {
-        public override byte[] BytesExtend(byte[] content)
-        {
-            byte[] crc = new byte[2];
-            //Modbus/Rtu协议扩张，增加CRC校验
-            byte[] newFormat = new byte[content.Length + 2];
-            Crc16.GetInstance().GetCRC(content, ref crc);
-            Array.Copy(content, 0, newFormat, 0, content.Length);
-            Array.Copy(crc, 0, newFormat, newFormat.Length - 2, crc.Length);
-            return newFormat;
-        }
-
-        public override byte[] BytesDecact(byte[] content)
-        {
-            //Modbus/Rtu协议收缩，抛弃后面1个字节的内容
-            byte[] newContent = new byte[content.Length - 2];
-            Array.Copy(content, 0, newContent, 0, newContent.Length);
-            return newContent;
-        }
-    }
 }