diff --git a/Modbus.Net/Modbus.Net/BaseProtocal.cs b/Modbus.Net/Modbus.Net/BaseProtocal.cs
index cf13699..3a8212a 100644
--- a/Modbus.Net/Modbus.Net/BaseProtocal.cs
+++ b/Modbus.Net/Modbus.Net/BaseProtocal.cs
@@ -73,21 +73,19 @@ namespace Modbus.Net
         /// <summary>
         ///     发送协议内容并接收，一般方法
         /// </summary>
-        /// <param name="isLittleEndian">是否是小端格式</param>
         /// <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 byte[] SendReceive(Endian isLittleEndian, params object[] content)
+        public virtual byte[] SendReceive(params object[] content)
         {
-            return AsyncHelper.RunSync(() => SendReceiveAsync(isLittleEndian, content));
+            return AsyncHelper.RunSync(() => SendReceiveAsync(Endian, content));
         }
 
         /// <summary>
         ///     发送协议内容并接收，一般方法
         /// </summary>
-        /// <param name="isLittleEndian">是否是小端格式</param>
         /// <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 async Task<byte[]> SendReceiveAsync(Endian isLittleEndian, params object[] content)
+        public virtual async Task<byte[]> SendReceiveAsync(params object[] content)
         {
             if (ProtocalLinker == null || !ProtocalLinker.IsConnected)
             {
@@ -95,7 +93,7 @@ namespace Modbus.Net
             }
             if (ProtocalLinker != null)
             {
-                return await ProtocalLinker.SendReceiveAsync(ProtocalUnit.TranslateContent(isLittleEndian, content));
+                return await ProtocalLinker.SendReceiveAsync(ProtocalUnit.TranslateContent(Endian, content));
             }
             return null;
         }
diff --git a/Modbus.Net/Modbus.Net/ProtocalUnit.cs b/Modbus.Net/Modbus.Net/ProtocalUnit.cs
index 3b99db0..f73c619 100644
--- a/Modbus.Net/Modbus.Net/ProtocalUnit.cs
+++ b/Modbus.Net/Modbus.Net/ProtocalUnit.cs
@@ -40,27 +40,12 @@ namespace Modbus.Net
         /// <summary>
         ///     转换静态方法，把对象数组转换为字节数组。
         /// </summary>
-        /// <param name="isLittleEndian">是否是小端格式</param>
+        /// <param name="endian">是否是小端格式</param>
         /// <param name="contents">对象数组</param>
         /// <returns>字节数组</returns>
-        public static byte[] TranslateContent(Endian isLittleEndian, params object[] contents)
-        {
-            switch (isLittleEndian)
-            {
-                case Endian.LittleEndianLsb:
-                {
-                    return ValueHelper.Instance.ObjectArrayToByteArray(contents);
-                }
-                case Endian.BigEndianLsb:
-                {
-                    return BigEndianValueHelper.Instance.ObjectArrayToByteArray(contents);
-                }
-                case Endian.BigEndianMsb:
-                {
-                    return BigEndianMsbValueHelper.Instance.ObjectArrayToByteArray(contents);
-                }
-            }
-            return null;
+        public static byte[] TranslateContent(Endian endian, params object[] contents)
+        {        
+             return ValueHelper.GetInstance(endian).ObjectArrayToByteArray(contents);
         }
     }