diff --git a/M3KTE_TERM/m3kte.cpp b/M3KTE_TERM/m3kte.cpp
index 63325f9..7a86540 100644
--- a/M3KTE_TERM/m3kte.cpp
+++ b/M3KTE_TERM/m3kte.cpp
@@ -472,6 +472,10 @@ M3KTE::M3KTE(QWidget *parent)
     Boards[2].adr = 3;
     Boards[3].adr = 4;
 
+    ui->BSM_Warning->setEnabled(false);
+    ui->BSM_Accident->setEnabled(false);
+    ui->BSM_WorkInProgress->setEnabled(false);
+
     initActions();
 
     ui->BST_Off->setChecked(true);
@@ -594,6 +598,9 @@ void M3KTE::onConnectClicked()
             ui->BST_Off->setChecked(false);
             ui->BST_On->setChecked(true);
 
+            ui->BSM_Warning->setEnabled(true);
+            ui->BSM_Accident->setEnabled(true);
+            ui->BSM_WorkInProgress->setEnabled(true);
             ui->BSM_WorkInProgress->setChecked(true);
 
             if(pingNetworkDevices())
@@ -617,6 +624,9 @@ void M3KTE::onConnectClicked()
         ui->BSM_Warning->setChecked(false);
         ui->BSM_Accident->setChecked(false);
         ui->BSM_WorkInProgress->setChecked(false);
+        ui->BSM_Warning->setEnabled(false);
+        ui->BSM_Accident->setEnabled(false);
+        ui->BSM_WorkInProgress->setEnabled(false);
     }
 }
 
@@ -713,7 +723,7 @@ void M3KTE::onWriteButtonClicked()
             writeUnit.setValue(i, Boards[ui->boardSelectBox->currentIndex()].ModbusModelHoldingReg->m_holdingRegisters[i + writeUnit.startAddress()]);
     }
 
-    if (auto *reply = modbusDevice->sendWriteRequest(writeUnit, ui->boardSelectBox->currentIndex()+1)) {
+    if (auto *reply = modbusDevice->sendWriteRequest(writeUnit, Boards[ui->boardSelectBox->currentIndex()].adr)) {
         if (!reply->isFinished()) {
             connect(reply, &QModbusReply::finished, this, [this, reply]() {
                 if (reply->error() == QModbusDevice::ProtocolError) {
@@ -931,7 +941,7 @@ bool M3KTE::pingNetworkDevices()
     connect(timer, &QTimer::timeout, this, &M3KTE::timeForPingIsGone);
     timer->setSingleShot(true);
     QModbusDataUnit* _unit = new QModbusDataUnit(QModbusDataUnit::InputRegisters, 85, 1);
-    int tmp_adr = 0;
+    int tmp_adr = 1;
 
     auto bar = new QProgressDialog(this);
     bar->setLabelText(tr("Поиск плат..."));
@@ -943,28 +953,34 @@ bool M3KTE::pingNetworkDevices()
 
     for(i=0; i<4;)
     {
-        bar->setValue(i+1);
+        bar->setValue(i);
         timerForPingSignal = false;
         timer->start(m_settingsDialog->settings().responseTime);
-        auto *reply = modbusDevice->sendReadRequest(*_unit, Boards[i].adr);
+        auto *reply = modbusDevice->sendReadRequest(*_unit, tmp_adr);
         while(!reply->isFinished() && !timerForPingSignal)
         {
             QCoreApplication::processEvents();
         }
         if(timerForPingSignal)
-        {}
+        {
+
+
+        }
         else
         {
-            timer->stop();
-            Boards[i].adr = Boards[i]._tmp_adr = tmp_adr;
-            i++;
+            if(reply->error()==QModbusDevice::NoError)
+            {
+                timer->stop();
+                Boards[i].adr = Boards[i]._tmp_adr = tmp_adr;
+                i++;
+            }
         }
         tmp_adr++;
         if(tmp_adr>=247)
         {
             //ERROR
             //OUT OF RANGE
-            QMessageBox::warning(this, "Ошибка при сканировании сети.", QString("Выход за пределы допустимых адресов. Найдено %1 плат").arg(i));
+            QMessageBox::warning(this, "Ошибка при сканировании сети.", QString("Выход за пределы допустимых адресов. Найдено %1 плат.").arg(i));
             bar->deleteLater();
             onConnectClicked();
             return false;
@@ -982,7 +998,7 @@ bool M3KTE::pingNetworkDevices()
     {
         for (int j = 0; j<3; j++)
         {
-            bar->setValue(i*3+j+2);
+            bar->setValue(i*3+j);
             timerForPingSignal = false;
             timer->start(m_settingsDialog->settings().responseTime);
             auto *reply = modbusDevice->sendReadRequest(*_unit_settings[j], Boards[i].adr);
@@ -998,8 +1014,17 @@ bool M3KTE::pingNetworkDevices()
             }
             else
             {
-                timer->stop();
-                stepForScanCurrentSettings(reply);
+                if(reply->error()==QModbusDevice::NoError)
+                {
+                    timer->stop();
+                    stepForScanCurrentSettings(reply);
+                }
+                else
+                {
+                    QMessageBox::warning(this, "Ошибка при получении текущих настроек.", QString("Таймаут при опросе устройства %1 по адресу %2").arg(i).arg(Boards[i].adr));
+                    onConnectClicked();
+                    return false;
+                }
             }
         }
     }
@@ -1208,6 +1233,14 @@ void M3KTE::displayResultOfScan(QModbusReply *reply, int boardID)
                 ui->BSM_Warning->setEnabled(true);
             }
         }
+    }   else if (reply->error() == QModbusDevice::ProtocolError) {
+        statusBar()->showMessage(tr("Read response error: %1 (Mobus exception: 0x%2)").
+                                    arg(reply->errorString()).
+                                    arg(reply->rawResult().exceptionCode(), -1, 16), 5000);
+    } else {
+        statusBar()->showMessage(tr("Read response error: %1 (code: 0x%2)").
+                                    arg(reply->errorString()).
+                                    arg(reply->error(), -1, 16), 5000);
     }
     reply->deleteLater();
 }