diff --git a/PlaneGcsSdk_Shared/Communication/TcpConnection.cs b/PlaneGcsSdk_Shared/Communication/TcpConnection.cs
index a4f3736..cc713a9 100644
--- a/PlaneGcsSdk_Shared/Communication/TcpConnection.cs
+++ b/PlaneGcsSdk_Shared/Communication/TcpConnection.cs
@@ -68,6 +68,7 @@ namespace Plane.Communication
 
         public override async Task OpenAsync()
         {
+            string logstr;
             if (!IsOpen)
             {
                 try
@@ -77,8 +78,9 @@ namespace Plane.Communication
                 //屏蔽掉异常处理
                 //CreateClientAndConnectAsync会new一个TcpClient并且重新连接  
                 //之前设置的TcpClient中Socket Bind会无效，在多网卡工作时会导致断线重连的时间特别长
-                catch (SocketException)
+                catch (SocketException e)
                 {
+                    logstr= e.Message;
                     //await CreateClientAndConnectAsync();
                 }
                 catch (ObjectDisposedException)
diff --git a/PlaneGcsSdk_Shared/CommunicationManagement/CommModule.cs b/PlaneGcsSdk_Shared/CommunicationManagement/CommModule.cs
index da4f2cd..7564286 100644
--- a/PlaneGcsSdk_Shared/CommunicationManagement/CommModule.cs
+++ b/PlaneGcsSdk_Shared/CommunicationManagement/CommModule.cs
@@ -19,8 +19,8 @@ namespace Plane.CommunicationManagement
 
         public TcpConnection Connection = null;
         public bool CommOK = false;
-        private const string MODULE_IP = "192.168.199.51";
-        private const string LOCAL_IP = "192.168.199.50";
+        private const string MODULE_IP = "192.168.199.51"; // "192.168.199.51";
+        private const string LOCAL_IP = "192.168.199.50";  //"192.168.199.50";
         private const int PORT = 9551;
         private bool _disposed;
         public int CommModuleCopterCount = 0;
diff --git a/PlaneGcsSdk_Shared/CommunicationManagement/CommModuleGenerateMavLink.cs b/PlaneGcsSdk_Shared/CommunicationManagement/CommModuleGenerateMavLink.cs
index c8937d6..c7ace55 100644
--- a/PlaneGcsSdk_Shared/CommunicationManagement/CommModuleGenerateMavLink.cs
+++ b/PlaneGcsSdk_Shared/CommunicationManagement/CommModuleGenerateMavLink.cs
@@ -1085,7 +1085,8 @@ namespace Plane.CommunicationManagement
                 
                 byte[] packet = GeneratePacket(MAVLink.MAVLINK_MSG_ID_GPS_RTCM_DATA, gps);
                 //Windows.Messages.Message.Show($"{DateTime.Now.ToString("HH:mm:ss:fff")} 单次长度 = {packet.Length}");
-                //await WriteCommPacketAsync(0, MavComm.COMM_DOWNLOAD_COMM, packet).ConfigureAwait(false);
+                //老版本在这发送，新版本在StartRtcmLoop里面一次性打包4个180字节发送了
+                await WriteCommPacketAsync(0, MavComm.COMM_DOWNLOAD_COMM, packet).ConfigureAwait(false);
 
                 lock (lock_rtcm)
                 {