diff --git a/Modbus.Net/Modbus.Net.Core/Modbus.Net.Core.csproj b/Modbus.Net/Modbus.Net.Core/Modbus.Net.Core.csproj
index 86df934..8194029 100644
--- a/Modbus.Net/Modbus.Net.Core/Modbus.Net.Core.csproj
+++ b/Modbus.Net/Modbus.Net.Core/Modbus.Net.Core.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net.Core</AssemblyName>
     <RootNamespace>Modbus.Net</RootNamespace>
     <PackageId>Modbus.Net.Core</PackageId>
-    <Version>1.3.9</Version>
+    <Version>1.4.0</Version>
     <Product>Modbus.Net</Product>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>
@@ -52,6 +52,7 @@
     <Compile Include="..\src\Base.Common\IMachineMethod.cs" Link="IMachineMethod.cs" />
     <Compile Include="..\src\Base.Common\TypeExtensions.cs" Link="TypeExtensions.cs" />
     <Compile Include="..\src\Base.Common\IConnector.cs" Link="IConnector.cs" />
+    <Compile Include="..\src\Base.Common\PipeUnit.cs" Link="PipeUnit.cs" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Modbus.Net/Modbus.Net.Modbus/Modbus.Net.Modbus.csproj b/Modbus.Net/Modbus.Net.Modbus/Modbus.Net.Modbus.csproj
index 0a9cd54..215e34f 100644
--- a/Modbus.Net/Modbus.Net.Modbus/Modbus.Net.Modbus.csproj
+++ b/Modbus.Net/Modbus.Net.Modbus/Modbus.Net.Modbus.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net.Modbus</AssemblyName>
     <RootNamespace>Modbus.Net.Modbus</RootNamespace>
     <PackageId>Modbus.Net.Modbus</PackageId>
-    <Version>1.3.9</Version>
+    <Version>1.4.0</Version>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>
     <Product>Modbus.Net.Modbus</Product>
diff --git a/Modbus.Net/Modbus.Net.OPC/Modbus.Net.OPC.csproj b/Modbus.Net/Modbus.Net.OPC/Modbus.Net.OPC.csproj
index b44303a..8fa1f47 100644
--- a/Modbus.Net/Modbus.Net.OPC/Modbus.Net.OPC.csproj
+++ b/Modbus.Net/Modbus.Net.OPC/Modbus.Net.OPC.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net.OPC</AssemblyName>
     <RootNamespace>Modbus.Net.OPC</RootNamespace>
     <PackageId>Modbus.Net.OPC</PackageId>
-    <Version>1.3.9</Version>
+    <Version>1.4.0</Version>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>
     <Description>Modbus.Net OPC Implementation</Description>
diff --git a/Modbus.Net/Modbus.Net.OPC/OpcProtocal.cs b/Modbus.Net/Modbus.Net.OPC/OpcProtocal.cs
index 30c2501..3d9f543 100644
--- a/Modbus.Net/Modbus.Net.OPC/OpcProtocal.cs
+++ b/Modbus.Net/Modbus.Net.OPC/OpcProtocal.cs
@@ -3,7 +3,9 @@
     /// <summary>
     ///     Opc协议
     /// </summary>
-    public abstract class OpcProtocal : BaseProtocal<OpcParamIn, OpcParamOut, ProtocalUnit<OpcParamIn, OpcParamOut>>
+    public abstract class OpcProtocal : BaseProtocal<OpcParamIn, OpcParamOut, ProtocalUnit<OpcParamIn, OpcParamOut>,
+        PipeUnit<OpcParamIn, OpcParamOut, IProtocalLinker<OpcParamIn, OpcParamOut>,
+            ProtocalUnit<OpcParamIn, OpcParamOut>>>
     {
         /// <summary>
         ///     构造函数
diff --git a/Modbus.Net/Modbus.Net.OPC/OpcUtility.cs b/Modbus.Net/Modbus.Net.OPC/OpcUtility.cs
index ea72ded..c469572 100644
--- a/Modbus.Net/Modbus.Net.OPC/OpcUtility.cs
+++ b/Modbus.Net/Modbus.Net.OPC/OpcUtility.cs
@@ -7,7 +7,9 @@ namespace Modbus.Net.OPC
     /// <summary>
     ///     Opc通用Api入口
     /// </summary>
-    public abstract class OpcUtility : BaseUtility<OpcParamIn, OpcParamOut, ProtocalUnit<OpcParamIn, OpcParamOut>>
+    public abstract class OpcUtility : BaseUtility<OpcParamIn, OpcParamOut, ProtocalUnit<OpcParamIn, OpcParamOut>,
+        PipeUnit<OpcParamIn, OpcParamOut, IProtocalLinker<OpcParamIn, OpcParamOut>,
+            ProtocalUnit<OpcParamIn, OpcParamOut>>>
     {
         /// <summary>
         ///     获取分隔符
@@ -80,7 +82,8 @@ namespace Modbus.Net.OPC
             try
             {
                 var split = GetSeperator?.Invoke() ?? '/';
-                var writeRequestOpcInputStruct = new WriteRequestOpcInputStruct(startAddress.Split('\r'), split, setContents[0]);
+                var writeRequestOpcInputStruct =
+                    new WriteRequestOpcInputStruct(startAddress.Split('\r'), split, setContents[0]);
                 var writeRequestOpcOutputStruct =
                     await
                         Wrapper.SendReceiveAsync<WriteRequestOpcOutputStruct>(Wrapper[typeof(WriteRequestOpcProtocal)],
diff --git a/Modbus.Net/Modbus.Net.Siemens/Modbus.Net.Siemens.csproj b/Modbus.Net/Modbus.Net.Siemens/Modbus.Net.Siemens.csproj
index 13cf6d5..7abcf74 100644
--- a/Modbus.Net/Modbus.Net.Siemens/Modbus.Net.Siemens.csproj
+++ b/Modbus.Net/Modbus.Net.Siemens/Modbus.Net.Siemens.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net.Siemens</AssemblyName>
     <RootNamespace>Modbus.Net.Siemens</RootNamespace>
     <PackageId>Modbus.Net.Siemens</PackageId>
-    <Version>1.3.9</Version>
+    <Version>1.4.0</Version>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>
     <Description>Modbus.Net Siemens Profinet Implementation</Description>
diff --git a/Modbus.Net/Modbus.Net.Siemens/SiemensPpiProtocal.cs b/Modbus.Net/Modbus.Net.Siemens/SiemensPpiProtocal.cs
index 269bcd0..fe51273 100644
--- a/Modbus.Net/Modbus.Net.Siemens/SiemensPpiProtocal.cs
+++ b/Modbus.Net/Modbus.Net.Siemens/SiemensPpiProtocal.cs
@@ -37,7 +37,7 @@ namespace Modbus.Net.Siemens
         /// </summary>
         /// <param name="content">写入的内容，使用对象数组描述</param>
         /// <returns>从设备获取的字节流</returns>
-        public override byte[] SendReceive(params object[] content)
+        public override PipeUnit SendReceive(params object[] content)
         {
             return AsyncHelper.RunSync(() => SendReceiveAsync(Endian, content));
         }
@@ -47,7 +47,7 @@ namespace Modbus.Net.Siemens
         /// </summary>
         /// <param name="content">写入的内容，使用对象数组描述</param>
         /// <returns>从设备获取的字节流</returns>
-        public override async Task<byte[]> SendReceiveAsync(params object[] content)
+        public override async Task<PipeUnit> SendReceiveAsync(params object[] content)
         {
             if (ProtocalLinker == null || !ProtocalLinker.IsConnected)
                 await ConnectAsync();
@@ -60,7 +60,7 @@ namespace Modbus.Net.Siemens
         /// <param name="unit">协议核心</param>
         /// <param name="content">协议的参数</param>
         /// <returns>设备返回的信息</returns>
-        private async Task<IOutputStruct> ForceSendReceiveAsync(ProtocalUnit unit, IInputStruct content)
+        private async Task<PipeUnit> ForceSendReceiveAsync(ProtocalUnit unit, IInputStruct content)
         {
             return await base.SendReceiveAsync(unit, content);
         }
@@ -83,21 +83,14 @@ namespace Modbus.Net.Siemens
             ProtocalLinker = new SiemensPpiProtocalLinker(_com, SlaveAddress);
             var inputStruct = new ComCreateReferenceSiemensInputStruct(SlaveAddress, MasterAddress);
             var outputStruct =
-                await await
+                (await (await
                     ForceSendReceiveAsync(this[typeof(ComCreateReferenceSiemensProtocal)],
-                            inputStruct).
-                        ContinueWith(async answer =>
-                        {
-                            if (!ProtocalLinker.IsConnected) return false;
-                            var inputStruct2 = new ComConfirmMessageSiemensInputStruct(SlaveAddress, MasterAddress);
-                            var outputStruct2 =
-                                (ComConfirmMessageSiemensOutputStruct)
-                                await
-                                    ForceSendReceiveAsync(this[typeof(ComConfirmMessageSiemensProtocal)],
-                                        inputStruct2);
-                            return outputStruct2 != null;
-                        });
-            return outputStruct;
+                            inputStruct)).
+                        SendReceiveAsync(this[typeof(ComConfirmMessageSiemensProtocal)], answer =>
+                        
+                            new ComConfirmMessageSiemensInputStruct(SlaveAddress, MasterAddress)
+                        )).Unwrap<ComConfirmMessageSiemensOutputStruct>();
+            return outputStruct != null;
         }
     }
 }
\ No newline at end of file
diff --git a/Modbus.Net/Modbus.Net.Siemens/SiemensTcpProtocal.cs b/Modbus.Net/Modbus.Net.Siemens/SiemensTcpProtocal.cs
index c5d8c09..1ced049 100644
--- a/Modbus.Net/Modbus.Net.Siemens/SiemensTcpProtocal.cs
+++ b/Modbus.Net/Modbus.Net.Siemens/SiemensTcpProtocal.cs
@@ -81,7 +81,7 @@ namespace Modbus.Net.Siemens
         /// </summary>
         /// <param name="content">发送的数据</param>
         /// <returns>返回的数据</returns>
-        public override byte[] SendReceive(params object[] content)
+        public override PipeUnit SendReceive(params object[] content)
         {
             return AsyncHelper.RunSync(() => SendReceiveAsync(Endian, content));
         }
@@ -91,7 +91,7 @@ namespace Modbus.Net.Siemens
         /// </summary>
         /// <param name="content">发送的数据</param>
         /// <returns>返回的数据</returns>
-        public override async Task<byte[]> SendReceiveAsync(params object[] content)
+        public override async Task<PipeUnit> SendReceiveAsync(params object[] content)
         {
             if (ProtocalLinker == null || !ProtocalLinker.IsConnected)
                 await ConnectAsync();
@@ -104,7 +104,7 @@ namespace Modbus.Net.Siemens
         /// <param name="unit">协议的核心</param>
         /// <param name="content">协议的参数</param>
         /// <returns>返回的数据</returns>
-        public override IOutputStruct SendReceive(ProtocalUnit unit, IInputStruct content)
+        public override PipeUnit SendReceive(ProtocalUnit unit, IInputStruct content)
         {
             return AsyncHelper.RunSync(() => SendReceiveAsync(unit, content));
         }
@@ -115,15 +115,14 @@ namespace Modbus.Net.Siemens
         /// <param name="unit">发送的数据</param>
         /// <param name="content">协议的参数</param>
         /// <returns>返回的数据</returns>
-        public override async Task<IOutputStruct> SendReceiveAsync(ProtocalUnit unit, IInputStruct content)
+        public override async Task<PipeUnit> SendReceiveAsync(ProtocalUnit unit, IInputStruct content)
         {
             if (ProtocalLinker != null && ProtocalLinker.IsConnected) return await base.SendReceiveAsync(unit, content);
             if (_connectTryCount > 10) return null;
             return
                 await
-                    await
-                        ConnectAsync()
-                            .ContinueWith(answer => answer.Result ? base.SendReceiveAsync(unit, content) : null);
+                    ConnectAsync()
+                        .ContinueWith(answer => answer.Result ? base.SendReceiveAsync(unit, content) : null).Unwrap();
         }
 
         /// <summary>
@@ -132,7 +131,7 @@ namespace Modbus.Net.Siemens
         /// <param name="unit">发送的数据</param>
         /// <param name="content">协议的参数</param>
         /// <returns>返回的数据</returns>
-        private async Task<IOutputStruct> ForceSendReceiveAsync(ProtocalUnit unit, IInputStruct content)
+        private async Task<PipeUnit> ForceSendReceiveAsync(ProtocalUnit unit, IInputStruct content)
         {
             return await base.SendReceiveAsync(unit, content);
         }
@@ -157,23 +156,15 @@ namespace Modbus.Net.Siemens
             if (!await ProtocalLinker.ConnectAsync()) return false;
             _connectTryCount = 0;
             var inputStruct = new CreateReferenceSiemensInputStruct(_tdpuSize, _taspSrc, _tsapDst);
-            return
+            var outputStruct =
                 //先建立连接，然后建立设备的引用
-                await await
-                    ForceSendReceiveAsync(this[typeof(CreateReferenceSiemensProtocal)], inputStruct)
-                        .ContinueWith(async answer =>
-                        {
-                            if (!ProtocalLinker.IsConnected) return false;
-                            var inputStruct2 = new EstablishAssociationSiemensInputStruct(0x0101, _maxCalling,
-                                _maxCalled,
-                                _maxPdu);
-                            var outputStruct2 =
-                                (EstablishAssociationSiemensOutputStruct)
-                                await
-                                    SendReceiveAsync(this[typeof(EstablishAssociationSiemensProtocal)],
-                                        inputStruct2);
-                            return outputStruct2 != null;
-                        });
+                (await (await
+                    ForceSendReceiveAsync(this[typeof(CreateReferenceSiemensProtocal)], inputStruct)).SendReceiveAsync(
+                    this[typeof(EstablishAssociationSiemensProtocal)], answer =>
+                        new EstablishAssociationSiemensInputStruct(0x0101, _maxCalling,
+                            _maxCalled,
+                            _maxPdu))).Unwrap<EstablishAssociationSiemensOutputStruct>();
+            return outputStruct != null;
         }
     }
 }
\ No newline at end of file
diff --git a/Modbus.Net/Modbus.Net/Modbus.Net.csproj b/Modbus.Net/Modbus.Net/Modbus.Net.csproj
index d0395eb..ecc2153 100644
--- a/Modbus.Net/Modbus.Net/Modbus.Net.csproj
+++ b/Modbus.Net/Modbus.Net/Modbus.Net.csproj
@@ -5,7 +5,7 @@
     <AssemblyName>Modbus.Net</AssemblyName>
     <RootNamespace>Modbus.Net</RootNamespace>
     <PackageId>Modbus.Net</PackageId>
-    <Version>1.3.9</Version>
+    <Version>1.4.0</Version>
     <Product>Modbus.Net</Product>
     <Authors>Chris L.(Luo Sheng)</Authors>
     <Company>Hangzhou Delian IoT Science Technology Co.,Ltd.</Company>
@@ -52,6 +52,7 @@
     <Compile Include="..\src\Base.Common\IMachineMethod.cs" Link="IMachineMethod.cs" />
     <Compile Include="..\src\Base.Common\TypeExtensions.cs" Link="TypeExtensions.cs" />
     <Compile Include="..\src\Base.Common\IConnector.cs" Link="IConnector.cs" />
+    <Compile Include="..\src\Base.Common\PipeUnit.cs" Link="PipeUnit.cs" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Modbus.Net/src/Base.Common/BaseProtocal.cs b/Modbus.Net/src/Base.Common/BaseProtocal.cs
index 0f7acfb..1d58f15 100644
--- a/Modbus.Net/src/Base.Common/BaseProtocal.cs
+++ b/Modbus.Net/src/Base.Common/BaseProtocal.cs
@@ -9,7 +9,7 @@ namespace Modbus.Net
     /// <summary>
     ///     基本协议
     /// </summary>
-    public abstract class BaseProtocal : BaseProtocal<byte[], byte[], ProtocalUnit>
+    public abstract class BaseProtocal : BaseProtocal<byte[], byte[], ProtocalUnit, PipeUnit>
     {
         /// <summary>
         ///     构造器
@@ -24,12 +24,32 @@ namespace Modbus.Net
         /// </summary>
         /// <param name="content">写入的内容，使用对象数组描述</param>
         /// <returns>从设备获取的字节流</returns>
-        public override async Task<byte[]> SendReceiveAsync(params object[] content)
+        public override async Task<PipeUnit> SendReceiveAsync(params object[] content)
         {
-            if (ProtocalLinker == null || !ProtocalLinker.IsConnected)
-                await ConnectAsync();
-            if (ProtocalLinker != null)
-                return await ProtocalLinker.SendReceiveAsync(ProtocalUnit.TranslateContent(Endian, content));
+            if (content != null)
+            {
+                var pipeUnit =
+                    new PipeUnit(
+                        ProtocalLinker);
+                return await pipeUnit.SendReceiveAsync(Endian, paramOut => content);
+            }
+            return null;
+        }
+
+        /// <summary>
+        ///     发送协议，通过传入需要使用的协议内容和输入结构
+        /// </summary>
+        /// <param name="unit">协议的实例</param>
+        /// <param name="content">输入信息的结构化描述</param>
+        /// <returns>输出信息的结构化描述</returns>
+        public override async Task<PipeUnit>
+            SendReceiveAsync(ProtocalUnit unit, IInputStruct content)
+        {
+            if (content != null)
+            {
+                var pipeUnit = new PipeUnit(ProtocalLinker);
+                return await pipeUnit.SendReceiveAsync(unit, paramOut => content);
+            }
             return null;
         }
     }
@@ -37,9 +57,11 @@ namespace Modbus.Net
     /// <summary>
     ///     基本协议
     /// </summary>
-    public abstract class BaseProtocal<TParamIn, TParamOut, TProtocalUnit> :
-        IProtocal<TParamIn, TParamOut, TProtocalUnit> where TProtocalUnit : class, IProtocalFormatting<TParamIn, TParamOut>
+    public abstract class BaseProtocal<TParamIn, TParamOut, TProtocalUnit, TPipeUnit> :
+        IProtocal<TParamIn, TParamOut, TProtocalUnit, TPipeUnit>
+        where TProtocalUnit : class, IProtocalFormatting<TParamIn, TParamOut>
         where TParamOut : class
+        where TPipeUnit : PipeUnit<TParamIn, TParamOut, IProtocalLinker<TParamIn, TParamOut>, TProtocalUnit>
     {
         /// <summary>
         ///     构造器
@@ -93,7 +115,8 @@ namespace Modbus.Net
                     {
                         //自动寻找存在的协议并将其加载
                         var protocalUnit =
-                            Activator.CreateInstance(type.GetTypeInfo().Assembly.GetType(protocalName)) as TProtocalUnit;
+                            Activator.CreateInstance(type.GetTypeInfo().Assembly
+                                .GetType(protocalName)) as TProtocalUnit;
                         if (protocalUnit == null)
                             throw new InvalidCastException($"No ProtocalUnit {nameof(TProtocalUnit)} implemented");
                         protocalUnit.Endian = Endian;
@@ -138,7 +161,8 @@ namespace Modbus.Net
         /// <param name="unit">协议的实例</param>
         /// <param name="content">输入信息的结构化描述</param>
         /// <returns>输出信息的结构化描述</returns>
-        public virtual IOutputStruct SendReceive(TProtocalUnit unit, IInputStruct content)
+        public virtual TPipeUnit SendReceive(
+            TProtocalUnit unit, IInputStruct content)
         {
             return AsyncHelper.RunSync(() => SendReceiveAsync(unit, content));
         }
@@ -149,9 +173,17 @@ namespace Modbus.Net
         /// <param name="unit">协议的实例</param>
         /// <param name="content">输入信息的结构化描述</param>
         /// <returns>输出信息的结构化描述</returns>
-        public virtual async Task<IOutputStruct> SendReceiveAsync(TProtocalUnit unit, IInputStruct content)
+        public virtual async Task<TPipeUnit>
+            SendReceiveAsync(TProtocalUnit unit, IInputStruct content)
         {
-            return await SendReceiveAsync<IOutputStruct>(unit, content);
+            if (content != null)
+            {
+                var pipeUnit =
+                    new PipeUnit<TParamIn, TParamOut, IProtocalLinker<TParamIn, TParamOut>, TProtocalUnit>(
+                        ProtocalLinker);
+                return await pipeUnit.SendReceiveAsync(unit, paramOut => content) as TPipeUnit;
+            }
+            return null;
         }
 
         /// <summary>
@@ -159,7 +191,7 @@ namespace Modbus.Net
         /// </summary>
         /// <param name="content">写入的内容，使用对象数组描述</param>
         /// <returns>从设备获取的字节流</returns>
-        public virtual TParamOut SendReceive(params object[] content)
+        public virtual TPipeUnit SendReceive(params object[] content)
         {
             return AsyncHelper.RunSync(() => SendReceiveAsync(content));
         }
@@ -169,7 +201,7 @@ namespace Modbus.Net
         /// </summary>
         /// <param name="content">写入的内容，使用对象数组描述</param>
         /// <returns>从设备获取的字节流</returns>
-        public virtual Task<TParamOut> SendReceiveAsync(params object[] content)
+        public virtual Task<TPipeUnit> SendReceiveAsync(params object[] content)
         {
             throw new NotImplementedException();
         }
@@ -196,20 +228,7 @@ namespace Modbus.Net
         public virtual async Task<T> SendReceiveAsync<T>(TProtocalUnit unit, IInputStruct content)
             where T : class, IOutputStruct
         {
-            var t = 0;
-            var formatContent = unit.Format(content);
-            if (formatContent != null)
-            {
-                TParamOut receiveContent;
-                //如果为特别处理协议的话，跳过协议扩展收缩
-                if (unit.GetType().GetTypeInfo().GetCustomAttributes(typeof(SpecialProtocalUnitAttribute)).Any())
-                    receiveContent = await ProtocalLinker.SendReceiveWithoutExtAndDecAsync(formatContent);
-                else
-                    receiveContent = await ProtocalLinker.SendReceiveAsync(formatContent);
-                if (receiveContent != null)
-                    return unit.Unformat<T>(receiveContent, ref t);
-            }
-            return null;
+            return (await SendReceiveAsync(unit, content)).Unwrap<T>();
         }
 
         /// <summary>
diff --git a/Modbus.Net/src/Base.Common/BaseUtility.cs b/Modbus.Net/src/Base.Common/BaseUtility.cs
index f6a7797..5908772 100644
--- a/Modbus.Net/src/Base.Common/BaseUtility.cs
+++ b/Modbus.Net/src/Base.Common/BaseUtility.cs
@@ -30,7 +30,7 @@ namespace Modbus.Net
     /// <summary>
     ///     基础Api入口
     /// </summary>
-    public abstract class BaseUtility : BaseUtility<byte[], byte[], ProtocalUnit>
+    public abstract class BaseUtility : BaseUtility<byte[], byte[], ProtocalUnit, PipeUnit>
     {
         /// <summary>
         ///     构造器
@@ -43,13 +43,14 @@ namespace Modbus.Net
     /// <summary>
     ///     基础Api入口
     /// </summary>
-    public abstract class BaseUtility<TParamIn, TParamOut, TProtocalUnit> : IUtilityProperty, IUtilityMethodData
+    public abstract class BaseUtility<TParamIn, TParamOut, TProtocalUnit, TPipeUnit> : IUtilityProperty, IUtilityMethodData
         where TProtocalUnit : class, IProtocalFormatting<TParamIn, TParamOut> where TParamOut : class
+        where TPipeUnit : PipeUnit<TParamIn, TParamOut, IProtocalLinker<TParamIn, TParamOut>, TProtocalUnit>
     {
         /// <summary>
         ///     协议收发主体
         /// </summary>
-        protected IProtocal<TParamIn, TParamOut, TProtocalUnit> Wrapper;
+        protected IProtocal<TParamIn, TParamOut, TProtocalUnit, TPipeUnit> Wrapper;
 
         /// <summary>
         ///     构造器
diff --git a/Modbus.Net/src/Base.Common/IProtocal.cs b/Modbus.Net/src/Base.Common/IProtocal.cs
index 0739ee7..37dedb8 100644
--- a/Modbus.Net/src/Base.Common/IProtocal.cs
+++ b/Modbus.Net/src/Base.Common/IProtocal.cs
@@ -9,8 +9,10 @@ namespace Modbus.Net
     /// <typeparam name="TParamIn">向Connector传入的类型</typeparam>
     /// <typeparam name="TParamOut">从Connector返回的类型</typeparam>
     /// <typeparam name="TProtocalUnit">协议单元的类型</typeparam>
-    public interface IProtocal<TParamIn, TParamOut, TProtocalUnit>
-        where TProtocalUnit : IProtocalFormatting<TParamIn, TParamOut>
+    public interface IProtocal<TParamIn, TParamOut, TProtocalUnit, TPipeUnit>
+        where TProtocalUnit : class, IProtocalFormatting<TParamIn, TParamOut>
+        where TParamOut : class
+        where TPipeUnit : PipeUnit<TParamIn, TParamOut, IProtocalLinker<TParamIn, TParamOut>, TProtocalUnit>
     {
         /// <summary>
         ///     协议的连接器
@@ -47,14 +49,14 @@ namespace Modbus.Net
         /// </summary>
         /// <param name="content">写入的内容，使用对象数组描述</param>
         /// <returns>从设备获取的字节流</returns>
-        TParamOut SendReceive(params object[] content);
+        TPipeUnit SendReceive(params object[] content);
 
         /// <summary>
         ///     发送协议内容并接收，一般方法
         /// </summary>
         /// <param name="content">写入的内容，使用对象数组描述</param>
         /// <returns>从设备获取的字节流</returns>
-        Task<TParamOut> SendReceiveAsync(params object[] content);
+        Task<TPipeUnit> SendReceiveAsync(params object[] content);
 
         /// <summary>
         ///     发送协议，通过传入需要使用的协议内容和输入结构
@@ -62,7 +64,7 @@ namespace Modbus.Net
         /// <param name="unit">协议的实例</param>
         /// <param name="content">输入信息的结构化描述</param>
         /// <returns>输出信息的结构化描述</returns>
-        IOutputStruct SendReceive(TProtocalUnit unit, IInputStruct content);
+        TPipeUnit SendReceive(TProtocalUnit unit, IInputStruct content);
 
         /// <summary>
         ///     发送协议，通过传入需要使用的协议内容和输入结构
@@ -70,7 +72,7 @@ namespace Modbus.Net
         /// <param name="unit">协议的实例</param>
         /// <param name="content">输入信息的结构化描述</param>
         /// <returns>输出信息的结构化描述</returns>
-        Task<IOutputStruct> SendReceiveAsync(TProtocalUnit unit, IInputStruct content);
+        Task<TPipeUnit> SendReceiveAsync(TProtocalUnit unit, IInputStruct content);
 
         /// <summary>
         ///     发送协议，通过传入需要使用的协议内容和输入结构
@@ -79,7 +81,8 @@ namespace Modbus.Net
         /// <param name="content">输入信息的结构化描述</param>
         /// <returns>输出信息的结构化描述</returns>
         /// <typeparam name="T">IOutputStruct的具体类型</typeparam>
-        T SendReceive<T>(TProtocalUnit unit, IInputStruct content) where T : class, IOutputStruct;
+        T SendReceive<T>(
+            TProtocalUnit unit, IInputStruct content) where T : class, IOutputStruct;
 
         /// <summary>
         ///     发送协议，通过传入需要使用的协议内容和输入结构
@@ -88,6 +91,7 @@ namespace Modbus.Net
         /// <param name="content">输入信息的结构化描述</param>
         /// <returns>输出信息的结构化描述</returns>
         /// <typeparam name="T">IOutputStruct的具体类型</typeparam>
-        Task<T> SendReceiveAsync<T>(TProtocalUnit unit, IInputStruct content) where T : class, IOutputStruct;
+        Task<T> SendReceiveAsync<T>(
+            TProtocalUnit unit, IInputStruct content) where T : class, IOutputStruct;
     }
 }
\ No newline at end of file
diff --git a/Modbus.Net/src/Base.Common/PipeUnit.cs b/Modbus.Net/src/Base.Common/PipeUnit.cs
new file mode 100644
index 0000000..9a92b3d
--- /dev/null
+++ b/Modbus.Net/src/Base.Common/PipeUnit.cs
@@ -0,0 +1,116 @@
+using System;
+using System.Linq;
+using System.Reflection;
+using System.Threading.Tasks;
+
+namespace Modbus.Net
+{
+    public class PipeUnit : PipeUnit<byte[], byte[], IProtocalLinker<byte[], byte[]>, ProtocalUnit>
+    {
+        public PipeUnit(IProtocalLinker<byte[], byte[]> protocalLinker) : base(protocalLinker)
+        {
+
+        }
+
+        protected PipeUnit(IProtocalLinker<byte[], byte[]> protocalLinker, ProtocalUnit protocalUnit, byte[] parameters,
+            bool success) : base(protocalLinker, protocalUnit, parameters, success)
+        {
+        }
+
+        public async Task<PipeUnit> SendReceiveAsync(Endian endian, Func<byte[], object[]> inputStructCreator)
+        {
+            if (Success)
+            {
+                var content = inputStructCreator.Invoke(ReturnParams);
+                if (ProtocalLinker != null)
+                    return new PipeUnit(ProtocalLinker, null,
+                        await ProtocalLinker.SendReceiveAsync(ProtocalUnit.TranslateContent(endian, content)),
+                        true);
+            }
+            return new PipeUnit(ProtocalLinker, null, ReturnParams, false);
+        }
+
+        public async Task<PipeUnit> SendReceiveAsync(
+                ProtocalUnit unit,
+                Func<byte[], IInputStruct> inputStructCreator)
+        {
+            var receiveContent = await SendReceiveAsync1(unit, inputStructCreator);
+            if (receiveContent != null)
+                return new PipeUnit(ProtocalLinker, unit,
+                    receiveContent, true);
+            return new PipeUnit(ProtocalLinker, unit, ReturnParams,
+                false);
+        }
+
+        public byte[] Unwrap()
+        {
+            return ReturnParams;
+        }
+    }
+
+    public class PipeUnit<TParamIn, TParamOut, TProtocalLinker, TProtocalUnit>
+        where TProtocalUnit : class, IProtocalFormatting<TParamIn, TParamOut>
+        where TProtocalLinker : class, IProtocalLinker<TParamIn, TParamOut>
+        where TParamOut : class
+    {
+        public PipeUnit(TProtocalLinker protocalLinker) : this(protocalLinker, null, null, true)
+        {
+            
+        }
+
+        protected PipeUnit(TProtocalLinker protocalLinker, TProtocalUnit protocalUnit, TParamOut parameters, bool success)
+        {
+            ProtocalLinker = protocalLinker;
+            ProtocalUnit = protocalUnit;
+            ReturnParams = parameters;
+            Success = success;
+        }
+
+        protected TProtocalLinker ProtocalLinker { get; set; }
+
+        protected TProtocalUnit ProtocalUnit { get; set; }
+
+        protected TParamOut ReturnParams { get; set; }
+
+        public bool Success { get; }
+
+        protected async Task<TParamOut> SendReceiveAsync1(TProtocalUnit unit,
+            Func<TParamOut, IInputStruct> inputStructCreator)
+        {
+            if (Success)
+            {
+                var content = inputStructCreator.Invoke(ReturnParams);
+                var formatContent = unit.Format(content);
+                if (formatContent != null)
+                {
+                    TParamOut receiveContent;
+                    //如果为特别处理协议的话，跳过协议扩展收缩
+                    if (unit.GetType().GetTypeInfo().GetCustomAttributes(typeof(SpecialProtocalUnitAttribute)).Any())
+                        receiveContent = await ProtocalLinker.SendReceiveWithoutExtAndDecAsync(formatContent);
+                    else
+                        receiveContent = await ProtocalLinker.SendReceiveAsync(formatContent);
+                    return receiveContent;
+                }
+            }
+            return null;
+        }
+
+        public virtual async Task<PipeUnit<TParamIn, TParamOut, TProtocalLinker, TProtocalUnit>> SendReceiveAsync(
+            TProtocalUnit unit,
+            Func<TParamOut, IInputStruct> inputStructCreator)
+        {
+            var receiveContent = await SendReceiveAsync1(unit, inputStructCreator);
+            if (receiveContent != null)
+                return new PipeUnit<TParamIn, TParamOut, TProtocalLinker, TProtocalUnit>(ProtocalLinker, unit,
+                    receiveContent, true);
+            return new PipeUnit<TParamIn, TParamOut, TProtocalLinker, TProtocalUnit>(ProtocalLinker, unit, ReturnParams,
+                false);
+        }
+
+        public T Unwrap<T>() where T : class, IOutputStruct
+        {
+            var t = 0;
+            return ProtocalUnit.Unformat<T>(ReturnParams, ref t);
+        }
+    }
+}
\ No newline at end of file