diff --git a/spwplugin/GR-ESB/gr_esb_bridge.cpp b/spwplugin/GR-ESB/gr_esb_bridge.cpp
--- a/spwplugin/GR-ESB/gr_esb_bridge.cpp
+++ b/spwplugin/GR-ESB/gr_esb_bridge.cpp
@@ -278,6 +278,9 @@ GR_ESB_Manager::GR_ESB_Manager(socexplor
 {
     this->Read_soc = new QTcpSocket(this);
     this->Write_soc = new QTcpSocket(this);
+    this->sourceLogicalAddress=32;
+    this->destinationLogicalAddress=254;
+    this->destinationKey=2;
 }
 
 GR_ESB_Manager::~GR_ESB_Manager()
@@ -351,12 +354,12 @@ bool GR_ESB_Manager::connectBridge()
     int timeout=60;
     if(this->Read_soc->state()==QTcpSocket::UnconnectedState)
     {
-        this->Read_soc->connectToHost(IP,gresb_Conf[virtualLinkIndex].Read_port);
+        this->Read_soc->connectToHost(IP,gresb_Conf[virtualLinkIndex].Write_port);
         this->Read_soc->waitForConnected(30000);
     }
     if(this->Write_soc->state()==QTcpSocket::UnconnectedState)
     {
-        this->Write_soc->connectToHost(IP,gresb_Conf[virtualLinkIndex].Write_port);
+        this->Write_soc->connectToHost(IP,gresb_Conf[virtualLinkIndex].Read_port);
         this->Write_soc->waitForConnected(30000);
     }
     while((this->Read_soc->state()!=QTcpSocket::ConnectedState) && (this->Write_soc->state()!=QTcpSocket::ConnectedState))
@@ -405,9 +408,9 @@ bool GR_ESB_Manager::sendPacket(char *pa
     {
         SPWpacket[0]=0; //Protocol = spw
         memcpy(SPWpacket+4,packet,size);
-        SPWpacket[1]=size & 0x0FF;
+        SPWpacket[1]=(size>>16) & 0x0FF;
         SPWpacket[2]=(size>>8) & 0x0FF;
-        SPWpacket[3]=(size>>16) & 0x0FF;
+        SPWpacket[3]=size & 0x0FF;
     }
     this->handleMutex->lock();
     result = ((size+4) == this->Write_soc->write(SPWpacket,size+4));
diff --git a/spwplugin/GR-ESB/gr_esb_bridge.h b/spwplugin/GR-ESB/gr_esb_bridge.h
--- a/spwplugin/GR-ESB/gr_esb_bridge.h
+++ b/spwplugin/GR-ESB/gr_esb_bridge.h
@@ -8,8 +8,8 @@
 
 struct gresb_Conf_str
 {
-    qint32 Read_port;
-    qint32 Write_port;
+    qint32 Transmit_port;
+    qint32 Receive_port;
 };