diff --git a/APP_Framework/Applications/control_app/s7_demo/s7_demo.c b/APP_Framework/Applications/control_app/s7_demo/s7_demo.c
index 7579f7aa3..f2013d0ae 100644
--- a/APP_Framework/Applications/control_app/s7_demo/s7_demo.c
+++ b/APP_Framework/Applications/control_app/s7_demo/s7_demo.c
@@ -18,7 +18,7 @@ static int CliConnect()
     res = Cli_ConnectTo(Client, Address, Rack, Slot);
     if (Check(Client, res, "UNIT Connection"))
     {
-        Cli_GetPduLength(Client, Requested, Negotiated);
+        Cli_GetPduLength(Client, &Requested, &Negotiated);
         printf("  Connected to   : %s (Rack=%d, Slot=%d)\n", Address, Rack, Slot);
         printf("  PDU Requested  : %d bytes\n", Requested);
         printf("  PDU Negotiated : %d bytes\n", Negotiated);
@@ -39,20 +39,20 @@ void PerformTasks()
             Buffer[0] = 0x01;
             Buffer[3] = 0x14;
             Cli_WriteAndDump(Client, Area, DBNumber, Start, Amount, WordLen, Buffer, "write DB");
-            PrivTaskDelay(29);
+            PrivTaskDelay(5*1000);
         }
         if(bRead){
             Cli_ReadAndDump(Client, Area, DBNumber, Start, Amount, WordLen, Buffer, "read DB");
-            PrivTaskDelay(1);
+            PrivTaskDelay(15*1000);
         }
         if(bWrite){
             memset(Buffer, 0, sizeof(Buffer));
             Cli_WriteAndDump(Client, Area, DBNumber, Start, Amount, WordLen, Buffer, "write DB");
-            PrivTaskDelay(29);
+            PrivTaskDelay(5*1000);
         }
         if(bRead){
             Cli_ReadAndDump(Client, Area, DBNumber, Start, Amount, WordLen, Buffer, "read DB");
-            PrivTaskDelay(1);
+            PrivTaskDelay(15*1000);
         }
     }
 }
diff --git a/APP_Framework/Framework/control/plc/interoperability/s7/snap7_libmain.cpp b/APP_Framework/Framework/control/plc/interoperability/s7/snap7_libmain.cpp
index 49c42e811..568715de9 100644
--- a/APP_Framework/Framework/control/plc/interoperability/s7/snap7_libmain.cpp
+++ b/APP_Framework/Framework/control/plc/interoperability/s7/snap7_libmain.cpp
@@ -506,10 +506,13 @@ int S7API Cli_GetLastError(S7Object Client, int &LastError)
 //---------------------------------------------------------------------------
 int S7API Cli_GetPduLength(S7Object Client, int &Requested, int &Negotiated)
 {
+    printf("before get pdu length\n");
     if (Client)
     {
         Negotiated=PSnap7Client(Client)->PDULength;
+        printf("Negotiated length %d\n", Negotiated);
         Requested =PSnap7Client(Client)->PDURequest;
+        printf("Requested length %d\n", Requested);
         return 0;
     }
     else
diff --git a/Ubiquitous/XiUOS/resources/ethernet/LwIP/include/lwip/opt.h b/Ubiquitous/XiUOS/resources/ethernet/LwIP/include/lwip/opt.h
index 6dca07f94..3d10610e5 100644
--- a/Ubiquitous/XiUOS/resources/ethernet/LwIP/include/lwip/opt.h
+++ b/Ubiquitous/XiUOS/resources/ethernet/LwIP/include/lwip/opt.h
@@ -3292,7 +3292,7 @@
  * SOCKETS_DEBUG: Enable debugging in sockets.c.
  */
 #if !defined SOCKETS_DEBUG || defined __DOXYGEN__
-#define SOCKETS_DEBUG                   LWIP_DBG_ON
+#define SOCKETS_DEBUG                   LWIP_DBG_OFF
 #endif
 
 /**