diff --git a/mainwindow.cpp b/mainwindow.cpp
index 078ae66..71bba18 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -934,7 +934,8 @@ void MainWindow::showUDSScanWindow()
 {
     if (!udsScanWindow)
     {
-        udsScanWindow = new UDSScanWindow;
+        udsScanWindow = new UDSScanWindow(model->getListReference());
+        connect(udsScanWindow, SIGNAL(sendCANFrame(const CANFrame*,int)), worker, SLOT(sendFrame(const CANFrame*,int)));
     }
     udsScanWindow->show();
 }
diff --git a/udsscanwindow.cpp b/udsscanwindow.cpp
index 858235e..4dd6847 100644
--- a/udsscanwindow.cpp
+++ b/udsscanwindow.cpp
@@ -1,14 +1,101 @@
 #include "udsscanwindow.h"
 #include "ui_udsscanwindow.h"
+#include "mainwindow.h"
 
-UDSScanWindow::UDSScanWindow(QWidget *parent) :
+UDSScanWindow::UDSScanWindow(const QVector<CANFrame> *frames, QWidget *parent) :
     QDialog(parent),
     ui(new Ui::UDSScanWindow)
 {
     ui->setupUi(this);
+
+    modelFrames = frames;
+
+    connect(MainWindow::getReference(), SIGNAL(framesUpdated(int)), this, SLOT(updatedFrames(int)));
+    connect(ui->btnScan, &QPushButton::clicked, this, &UDSScanWindow::scanUDS);
+
+    ui->cbBuses->addItem("0");
+    ui->cbBuses->addItem("1");
+    ui->cbBuses->addItem("Both");
+
 }
 
 UDSScanWindow::~UDSScanWindow()
 {
     delete ui;
 }
+
+void UDSScanWindow::scanUDS()
+{
+    ui->listResults->clear();
+
+    CANFrame *frame;
+
+    int buses = ui->cbBuses->currentIndex();
+    buses++;
+    if (buses < 1) buses = 1;
+    for (int id = 0x7E0; id < 0x7E8; id++)
+    {
+        if (buses & 1)
+        {
+            frame = new CANFrame;
+            frame->ID = id;
+            frame->len = 8;
+            frame->extended = false;
+            frame->data[0] = 2;
+            frame->data[1] = 0x10;
+            frame->data[2] = 1;
+            frame->data[3] = 0;frame->data[4] = 0;frame->data[5] = 0;
+            frame->data[6] = 0;frame->data[7] = 0;
+            frame->bus = 0;
+            emit sendCANFrame(frame, 0);
+        }
+        if (buses & 2)
+        {
+            frame = new CANFrame;
+            frame->ID = id;
+            frame->len = 8;
+            frame->extended = false;
+            frame->data[0] = 2;
+            frame->data[1] = 0x10;
+            frame->data[2] = 1;
+            frame->data[3] = 0;frame->data[4] = 0;frame->data[5] = 0;
+            frame->data[6] = 0;frame->data[7] = 0;
+            frame->bus = 1;
+            emit sendCANFrame(frame, 1);
+        }
+    }
+}
+
+void UDSScanWindow::updatedFrames(int numFrames)
+{
+    CANFrame thisFrame;
+    QString result;
+    int id;
+    if (numFrames == -1) //all frames deleted. We don't care
+    {
+    }
+    else if (numFrames == -2) //all new set of frames. Don't care.
+    {
+    }
+    else //just got some new frames. See if they are relevant.
+    {
+        for (int i = modelFrames->count() - numFrames; i < modelFrames->count(); i++)
+        {
+            thisFrame = modelFrames->at(i);
+            id = thisFrame.ID;
+            if (id >= 0x7E8 && id <= 0x7EF)
+            {
+                if (thisFrame.data[1] == 0x50)
+                {
+                    result = "ECU at 0x" + QString::number(id, 16) + " bus " + QString::number(thisFrame.bus) + " accepts UDS standard diag";
+                    ui->listResults->addItem(result);
+                }
+                if (thisFrame.data[i] == 0x7f)
+                {
+                    result = "ECU at 0x" + QString::number(id, 16) + " bus " + QString::number(thisFrame.bus) + " rejects UDS standard diag";
+                    ui->listResults->addItem(result);
+                }
+            }
+        }
+    }
+}
diff --git a/udsscanwindow.h b/udsscanwindow.h
index 60301f2..ccf1579 100644
--- a/udsscanwindow.h
+++ b/udsscanwindow.h
@@ -1,6 +1,8 @@
 #ifndef UDSSCANWINDOW_H
 #define UDSSCANWINDOW_H
 
+#include "can_structs.h"
+
 #include <QDialog>
 
 namespace Ui {
@@ -12,11 +14,19 @@ class UDSScanWindow : public QDialog
     Q_OBJECT
 
 public:
-    explicit UDSScanWindow(QWidget *parent = 0);
+    explicit UDSScanWindow(const QVector<CANFrame> *frames, QWidget *parent = 0);
     ~UDSScanWindow();
 
+signals:
+    void sendCANFrame(const CANFrame *, int);
+
+private slots:
+    void updatedFrames(int numFrames);
+    void scanUDS();
+
 private:
     Ui::UDSScanWindow *ui;
+    const QVector<CANFrame> *modelFrames;
 };
 
 #endif // UDSSCANWINDOW_H
diff --git a/udsscanwindow.ui b/udsscanwindow.ui
index b81b93e..73bd3d0 100644
--- a/udsscanwindow.ui
+++ b/udsscanwindow.ui
@@ -1,17 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <ui version="4.0">
  <class>UDSScanWindow</class>
- <widget name="UDSScanWindow" class="QDialog">
+ <widget class="QDialog" name="UDSScanWindow">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>400</width>
-    <height>300</height>
+    <width>742</width>
+    <height>527</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>Dialog</string>
   </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QLabel" name="label_2">
+     <property name="text">
+      <string>Results</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QListWidget" name="listResults"/>
+   </item>
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Buses to scan</string>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QComboBox" name="cbBuses"/>
+   </item>
+   <item>
+    <widget class="QPushButton" name="btnScan">
+     <property name="text">
+      <string>Start Scan</string>
+     </property>
+    </widget>
+   </item>
+  </layout>
  </widget>
  <resources/>
  <connections/>