diff --git a/serialConnectionManager/ModbusMaster.cpp b/serialConnectionManager/ModbusMaster.cpp
index 76a979a..f455e41 100644
--- a/serialConnectionManager/ModbusMaster.cpp
+++ b/serialConnectionManager/ModbusMaster.cpp
@@ -107,8 +107,14 @@ void modBusMaster::setMultipleRegister(int startAddress, quint16 writeSize , QVe
 
 QBitArray modBusMaster::getCoil(int startAddress, quint16 readSize)
 {
-
     QModbusDataUnit unit = readRequest(QModbusDataUnit::RegisterType::Coils,  startAddress, readSize);
+    mutex.lock();
+    if (!unit.valueCount())
+        modBusAnswerNotReady.wait(&mutex);
+    mutex.unlock();
+
+
+
     QBitArray coils;
     coils.resize(2);
     auto num = unit.valueCount();
@@ -117,7 +123,15 @@ QBitArray modBusMaster::getCoil(int startAddress, quint16 readSize)
     {
         coils.setBit((unit.value(i)));
     }
+
+    mutex.lock();
+        modBusAnswerConsumed.wait(&mutex);
+    mutex.unlock();
+
     return coils ;
+
+
+
 }
 
 QBitArray modBusMaster::getInputCoil(int startAddress, quint16 readSize)
@@ -174,19 +188,29 @@ QModbusDataUnit  modBusMaster::readRequest(QModbusDataUnit::RegisterType registe
     if (auto *reply =modbusDevice->sendReadRequest(QModbusDataUnit(table, startAddress, readSize), _slaveAddress))
     {
         QFuture<void> future = QtConcurrent::run([this, reply]() {
-            qDebug() << "reply->isFinished() " << reply->isFinished();
-            while(!reply->isFinished())
-            {
-                qDebug() << "reply->isFinished() " << reply->isFinished();
-                qDebug() << "Hello from thread " << QThread::currentThread();
-            }
+
+            mutex.lock();
+            if (!reply->isFinished())
+                modBusAnswerNotReady.wait(&mutex);
+            mutex.unlock();
+
+
+            //   qDebug() << "reply->isFinished() " << reply->isFinished();
+            // while(!reply->isFinished())
+            //  {
+            //      qDebug() << "reply->isFinished() " << reply->isFinished();
+            //    qDebug() << "Hello from thread " << QThread::currentThread();
+            // }
             if(!checkForError(reply))
             {
                 const QModbusDataUnit unit = reply->result();
                 return unit;
             }
+
+            mutex.lock();
+            modBusAnswerConsumed.wakeAll();
+            mutex.unlock();
         });
-      //  future.waitForFinished();
 
     }
     else
@@ -244,7 +268,7 @@ void modBusMaster::writeRequest(QModbusDataUnit::RegisterType registerType, int
 
             }
         });
-       // future.waitForFinished();
+        // future.waitForFinished();
 
         // if (!reply->isFinished()) {
         //   connect(reply, &QModbusReply::finished, this, [reply]() {
diff --git a/serialConnectionManager/ModbusMaster.h b/serialConnectionManager/ModbusMaster.h
index e6d215b..985a686 100644
--- a/serialConnectionManager/ModbusMaster.h
+++ b/serialConnectionManager/ModbusMaster.h
@@ -8,8 +8,8 @@
 #include <QBitArray>
 #include <QSerialPort>
 #include "SettingSerialParameters.h"
-
-
+#include "QWaitCondition"
+#include "qmutex.h"
 class QModbusClient;
 class QModbusReply;
 
@@ -54,6 +54,9 @@ private:
     SettingSerialParameters _modbusSettings;
     QBitArray _coilFlags;
     QVector<quint16> _registerValues;
+    QWaitCondition modBusAnswerNotReady;
+    QWaitCondition modBusAnswerConsumed;
+    QMutex mutex;
 public:
     QModbusReply *reply;
 };
diff --git a/serialConnectionManager/mainwindow.cpp b/serialConnectionManager/mainwindow.cpp
index 1d4b555..ad60da2 100644
--- a/serialConnectionManager/mainwindow.cpp
+++ b/serialConnectionManager/mainwindow.cpp
@@ -1,6 +1,7 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "qdebug.h"
+#include <QThread>
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
     , ui(new Ui::MainWindow)
@@ -10,6 +11,9 @@ MainWindow::MainWindow(QWidget *parent)
     ui->writeTable->addItem(tr("Discrete Inputs"), 1);
     ui->writeTable->addItem(tr("Input Registers"), 2);
     ui->writeTable->addItem(tr("Holding Registers"), 3);
+    QThread *upperModbusThread = new QThread();
+    modBusObj.moveToThread(upperModbusThread);
+
     connect(&modBusObj, &modBusMaster::modbusConnectionState, this, &MainWindow::connectionState);
 
 }