diff --git a/Servo/include/ServoController.h b/Servo/include/ServoController.h
index b0b712f..d2915ce 100644
--- a/Servo/include/ServoController.h
+++ b/Servo/include/ServoController.h
@@ -11,14 +11,14 @@ private:
 	const int SRV_START_ANGLE_INT_PART_REG = 2000;
 	const int SRV_STOP_ANGLE_INT_PART_REG = 2001;
 	const int SRV_AZIMUTH_SPEED_REG = 2002;
-    const int SRV_APPLY_SETTING_REG = 2004;
-    const int SRV_START_STOP_REG = 2005;
-    const int SRV_ZERO_OFFSET_ANGLE = 2007;
-    const int SRV_START_ANGLE_FRAC_PART_REG = 2010;
-    const int SRV_STOP_ANGLE_FRAC_PART_REG = 2011;
-    const int SRV_CALIBRATE_REG = 2013;
-    const int SRV_ENABLE_DRIVE_REG = 2017;
-    const int SRV_AZIMUTH_REG = 2030;
+    const int SRV_APPLY_SETTING_REG = 2003;//2004;
+    const int SRV_START_STOP_REG = 2004 ;//2005;
+    const int SRV_ZERO_OFFSET_ANGLE =2005;// 2007;
+    const int SRV_START_ANGLE_FRAC_PART_REG = 2006 ;//2010;
+    const int SRV_STOP_ANGLE_FRAC_PART_REG = 2007; // 2011;
+    const int SRV_CALIBRATE_REG = 2008 ;//2013;
+    const int SRV_ENABLE_DRIVE_REG =2009;// 2017;
+    const int SRV_AZIMUTH_REG = 2010; //2030;
 
 	const double SRV_ANGLE_FACTOR = 100.0;
 	const double SRV_SPEED_FACTOR = 1000.0;
diff --git a/Servo/src/ModbusMaster.cpp b/Servo/src/ModbusMaster.cpp
index 5cffa40..9c7bb3c 100644
--- a/Servo/src/ModbusMaster.cpp
+++ b/Servo/src/ModbusMaster.cpp
@@ -20,7 +20,7 @@ void ModbusMaster::init(ExpConfig& expConfig)
             connect(_modbusDevice, &QModbusClient::errorOccurred, [this](QModbusDevice::Error)
             {
                 _initialized = false;
-                throw ServoException(_modbusDevice->errorString());
+                connectionStateChanged(QModbusDevice::UnconnectedState);
             });
 
             connect(_modbusDevice,
@@ -46,6 +46,7 @@ void ModbusMaster::init(ExpConfig& expConfig)
 /*************************************************************************************************/
 void ModbusMaster::connectionStateChanged(QModbusDevice::State state)
 {
+
     if(state == QModbusDevice::UnconnectedState)
     {
         _connected = false;
diff --git a/Test/MainWindow.cpp b/Test/MainWindow.cpp
index 68b519b..6e9c4c4 100644
--- a/Test/MainWindow.cpp
+++ b/Test/MainWindow.cpp
@@ -217,6 +217,7 @@ void MainWindow::handleGetRequestFromServo()
             ui->showStopAngle->setText(QString::number(_servoControler.getStopAngle()));
             ui->showAngleOffset->setText(QString::number(_servoControler.getAngleOffset()));
             ui->showAzimuth->setText(QString::number(_servoControler.getAzimuth()));
+            ui->showServoError->setText("");
             QThread::sleep(2);
         }
         catch(ServoException exp)