diff --git a/Modbus.Net/Modbus.Net.Siemens/SiemensUtility.cs b/Modbus.Net/Modbus.Net.Siemens/SiemensUtility.cs
index 9e7a0e0..d5e4b90 100644
--- a/Modbus.Net/Modbus.Net.Siemens/SiemensUtility.cs
+++ b/Modbus.Net/Modbus.Net.Siemens/SiemensUtility.cs
@@ -13,10 +13,12 @@ namespace Modbus.Net.Siemens
         /// PPI
         /// </summary>
         Ppi = 0,
+#pragma warning disable
         /// <summary>
         /// MPI
         /// </summary>
         //Mpi = 1,
+#pragma warning restore
         /// <summary>
         /// 以太网
         /// </summary>
diff --git a/Modbus.Net/Modbus.Net/Connector/ComConnector.cs b/Modbus.Net/Modbus.Net/Connector/ComConnector.cs
index a76fd33..86fd31f 100644
--- a/Modbus.Net/Modbus.Net/Connector/ComConnector.cs
+++ b/Modbus.Net/Modbus.Net/Connector/ComConnector.cs
@@ -57,6 +57,11 @@ namespace Modbus.Net
         /// </summary>
         private readonly StopBits _stopBits;
 
+        /// <summary>
+        ///     停止位
+        /// </summary>
+        private readonly Handshake _handshake;
+
         /// <inheritdoc />
         protected override int TimeoutTime { get; set; }
 
@@ -107,20 +112,23 @@ namespace Modbus.Net
         /// <param name="parity">校验位</param>
         /// <param name="stopBits">停止位</param>
         /// <param name="dataBits">数据位</param>
+        /// <param name="handshake">流控制</param>
         /// <param name="timeoutTime">超时时间</param>
         /// <param name="isFullDuplex">是否为全双工</param>
-        public ComConnector(string com, int baudRate, Parity parity, StopBits stopBits, int dataBits, int timeoutTime = 10000, bool isFullDuplex = false) : base(timeoutTime, isFullDuplex)
+        public ComConnector(string com, BaudRate baudRate, Parity parity, StopBits stopBits, DataBits dataBits, Handshake handshake, int timeoutTime = 10000, bool isFullDuplex = false) : base(timeoutTime, isFullDuplex)
         {
             //端口号 
             _com = com.Split(':')[0];
             //波特率
-            _baudRate = baudRate;
+            _baudRate = (int)baudRate;
             //奇偶校验
             _parity = parity;
             //停止位 
             _stopBits = stopBits;
             //数据位
-            _dataBits = dataBits;
+            _dataBits = (int)dataBits;
+            //流控制
+            _handshake = handshake;
             //从站号
             _slave = com.Split(':')[1];
         }
@@ -346,6 +354,7 @@ namespace Modbus.Net
                             Parity = _parity,
                             StopBits = _stopBits,
                             DataBits = _dataBits,
+                            Handshake = _handshake,
                             ReadTimeout = TimeoutTime
                         });
                     }
diff --git a/Modbus.Net/Modbus.Net/Linker/ComProtocolLinker.cs b/Modbus.Net/Modbus.Net/Linker/ComProtocolLinker.cs
index 2abb859..03e128d 100644
--- a/Modbus.Net/Modbus.Net/Linker/ComProtocolLinker.cs
+++ b/Modbus.Net/Modbus.Net/Linker/ComProtocolLinker.cs
@@ -3,6 +3,46 @@ using System.IO.Ports;
 
 namespace Modbus.Net
 {
+    /// <summary>
+    ///     波特率
+    /// </summary>
+    public enum BaudRate
+    {
+#pragma warning disable
+        BaudRate75 = 75,
+        BaudRate110 = 110,
+        BaudRate134 = 134,
+        BaudRate150 = 150,
+        BaudRate300 = 300,
+        BaudRate600 = 600,
+        BaudRate1200 = 1200,
+        BaudRate1800 = 1800,
+        BaudRate2400 = 2400,
+        BaudRate4800 = 4800,
+        BaudRate9600 = 9600,
+        BaudRate14400 = 14400,
+        BaudRate19200 = 19200,
+        BaudRate38400 = 38400,
+        BaudRate57600 = 57600,
+        BaudRate115200 = 115200,
+        BaudRate128000 = 128000,
+        BaudRate230400 = 230400,
+        BaudRate460800 = 460800,
+        BaudRate921600 = 921600,
+#pragma warning restore
+    }
+
+    /// <summary>
+    ///     数据位
+    /// </summary>
+    public enum DataBits
+    {
+#pragma warning disable
+        Seven = 7,
+        Eight = 8,
+#pragma warning restore
+    }
+
     /// <summary>
     ///     串口连接对象
     /// </summary>
@@ -16,19 +56,21 @@ namespace Modbus.Net
         /// <param name="parity">校验位</param>
         /// <param name="stopBits">停止位</param>
         /// <param name="dataBits">数据位</param>
+        /// <param name="handshake">流控制</param>
         /// <param name="connectionTimeout">超时时间</param>
         /// <param name="slaveAddress">从站地址</param>
         /// <param name="isFullDuplex">是否为全双工</param>
-        protected ComProtocolLinker(string com, int slaveAddress, int? baudRate = null, Parity? parity = null, StopBits? stopBits = null, int? dataBits = null,
+        protected ComProtocolLinker(string com, int slaveAddress, BaudRate? baudRate = null, Parity? parity = null, StopBits? stopBits = null, DataBits? dataBits = null, Handshake? handshake = null,
             int? connectionTimeout = null, bool? isFullDuplex = null)
         {
-            baudRate = int.Parse(baudRate != null ? baudRate.ToString() : null ?? ConfigurationReader.GetValue("COM:" + com, "BaudRate"));
+            baudRate = Enum.Parse<BaudRate>(baudRate != null ? baudRate.ToString() : null ?? ConfigurationReader.GetValue("COM:" + com, "BaudRate"));
             parity = Enum.Parse<Parity>(parity != null ? parity.ToString() : null ?? ConfigurationReader.GetValue("COM:" + com, "Parity"));
             stopBits = Enum.Parse<StopBits>(stopBits != null ? stopBits.ToString() : null ?? ConfigurationReader.GetValue("COM:" + com, "StopBits"));
-            dataBits = int.Parse(dataBits != null ? dataBits.ToString() : null ?? ConfigurationReader.GetValue("COM:" + com, "DataBits"));
+            dataBits = Enum.Parse<DataBits>(dataBits != null ? dataBits.ToString() : null ?? ConfigurationReader.GetValue("COM:" + com, "DataBits"));
+            handshake = Enum.Parse<Handshake>(handshake != null ? handshake.ToString() : null ?? ConfigurationReader.GetValue("COM:" + com, "Handshake"));
             connectionTimeout = int.Parse(connectionTimeout != null ? connectionTimeout.ToString() : null ?? ConfigurationReader.GetValue("COM:" + com, "ConnectionTimeout"));
             isFullDuplex = bool.Parse(isFullDuplex != null ? isFullDuplex.ToString() : null ?? ConfigurationReader.GetValue("COM:" + com, "FullDuplex"));
-            BaseConnector = new ComConnector(com + ":" + slaveAddress, baudRate.Value, parity.Value, stopBits.Value, dataBits.Value, connectionTimeout.Value, isFullDuplex.Value);
+            BaseConnector = new ComConnector(com + ":" + slaveAddress, baudRate.Value, parity.Value, stopBits.Value, dataBits.Value, handshake.Value, connectionTimeout.Value, isFullDuplex.Value);
         }
     }
 }
\ No newline at end of file
diff --git a/Modbus.Net/Modbus.Net/appsettings.default.json b/Modbus.Net/Modbus.Net/appsettings.default.json
index ab8c698..4676716 100644
--- a/Modbus.Net/Modbus.Net/appsettings.default.json
+++ b/Modbus.Net/Modbus.Net/appsettings.default.json
@@ -25,10 +25,11 @@
     "COM": {
       "FetchSleepTime": "100",
       "ConnectionTimeout": "5000",
-      "BaudRate": "9600",
+      "BaudRate": "BaudRate9600",
       "Parity": "None",
       "StopBits": "One",
-      "DataBits": "8",
+      "DataBits": "Eight",
+      "Handshake": "None",
       "FullDuplex": "False",
       "Modbus": {
         "COM": "COM1"
diff --git a/Samples/AnyType/appsettings.default.json b/Samples/AnyType/appsettings.default.json
index ab8c698..4676716 100644
--- a/Samples/AnyType/appsettings.default.json
+++ b/Samples/AnyType/appsettings.default.json
@@ -25,10 +25,11 @@
     "COM": {
       "FetchSleepTime": "100",
       "ConnectionTimeout": "5000",
-      "BaudRate": "9600",
+      "BaudRate": "BaudRate9600",
       "Parity": "None",
       "StopBits": "One",
-      "DataBits": "8",
+      "DataBits": "Eight",
+      "Handshake": "None",
       "FullDuplex": "False",
       "Modbus": {
         "COM": "COM1"
diff --git a/Samples/CrossLamp/appsettings.default.json b/Samples/CrossLamp/appsettings.default.json
index ab8c698..4676716 100644
--- a/Samples/CrossLamp/appsettings.default.json
+++ b/Samples/CrossLamp/appsettings.default.json
@@ -25,10 +25,11 @@
     "COM": {
       "FetchSleepTime": "100",
       "ConnectionTimeout": "5000",
-      "BaudRate": "9600",
+      "BaudRate": "BaudRate9600",
       "Parity": "None",
       "StopBits": "One",
-      "DataBits": "8",
+      "DataBits": "Eight",
+      "Handshake": "None",
       "FullDuplex": "False",
       "Modbus": {
         "COM": "COM1"
diff --git a/Samples/MachineJob/appsettings.default.json b/Samples/MachineJob/appsettings.default.json
index ab8c698..4676716 100644
--- a/Samples/MachineJob/appsettings.default.json
+++ b/Samples/MachineJob/appsettings.default.json
@@ -25,10 +25,11 @@
     "COM": {
       "FetchSleepTime": "100",
       "ConnectionTimeout": "5000",
-      "BaudRate": "9600",
+      "BaudRate": "BaudRate9600",
       "Parity": "None",
       "StopBits": "One",
-      "DataBits": "8",
+      "DataBits": "Eight",
+      "Handshake": "None",
       "FullDuplex": "False",
       "Modbus": {
         "COM": "COM1"
diff --git a/Samples/TripleAdd/appsettings.default.json b/Samples/TripleAdd/appsettings.default.json
index ab8c698..4676716 100644
--- a/Samples/TripleAdd/appsettings.default.json
+++ b/Samples/TripleAdd/appsettings.default.json
@@ -25,10 +25,11 @@
     "COM": {
       "FetchSleepTime": "100",
       "ConnectionTimeout": "5000",
-      "BaudRate": "9600",
+      "BaudRate": "BaudRate9600",
       "Parity": "None",
       "StopBits": "One",
-      "DataBits": "8",
+      "DataBits": "Eight",
+      "Handshake": "None",
       "FullDuplex": "False",
       "Modbus": {
         "COM": "COM1"