Index: simulator/plugins/version/loader.py
===================================================================
diff -u -rb84c3a9b1d50790944ee40a68d2013ace7302f82 -r967521dff94783ce48b50abc8db6bcd67bb501bf
--- simulator/plugins/version/loader.py	(.../loader.py)	(revision b84c3a9b1d50790944ee40a68d2013ace7302f82)
+++ simulator/plugins/version/loader.py	(.../loader.py)	(revision 967521dff94783ce48b50abc8db6bcd67bb501bf)
@@ -10,7 +10,7 @@
 # parent
 from simulator.dynamicloader import DynamicLoader
 # hd Simulator
-from dialin.ui.hd_simulator import HDSimulator
+from simulator.interface import SimulationInterface
 # plugin specific
 #  -- none --
 
@@ -37,10 +37,15 @@
     sbDGFPGAMinor: QtWidgets.QSpinBox
     sbDGFPGALab: QtWidgets.QSpinBox
 
-    def __init__(self, hd_simulator: HDSimulator):
-        super().__init__(os.path.dirname(__file__), hd_simulator)
-        print(" ---------- ", self.hd_simulator)
+    leHDSerial: QtWidgets.QLineEdit
+    leDGSerial: QtWidgets.QLineEdit
 
+    pbHDSend: QtWidgets.QPushButton
+    pbDGSend: QtWidgets.QPushButton
+
+    def __init__(self, interface: SimulationInterface):
+        super().__init__(os.path.dirname(__file__), interface)
+
     def _init_loader(self):
         """
         finds and creates widgets
@@ -64,6 +69,12 @@
         self.sbDGFPGAMinor = self.find_spinbox('sbDGFPGAMinor')
         self.sbDGFPGALab = self.find_spinbox('sbDGFPGALab')
 
+        self.leHDSerial = self.find_line_edit('leHDSerial')
+        self.leDGSerial = self.find_line_edit('leDGSerial')
+
+        self.pbHDSend = self.find_button('pbHDSend')
+        self.pbDGSend = self.find_button('pbDGSend')
+
     def _init_widgets(self):
         """
         initializes the widgets' properties
@@ -76,26 +87,13 @@
         initializes the widgets connections
         :return:
         """
-        self.sbHDMajor.valueChanged.connect(self.do_hd_data)
-        self.sbHDMinor.valueChanged.connect(self.do_hd_data)
-        self.sbHDMicro.valueChanged.connect(self.do_hd_data)
-        self.sbHDBuild.valueChanged.connect(self.do_hd_data)
-        self.sbHDFPGAid.valueChanged.connect(self.do_hd_data)
-        self.sbHDFPGAMajor.valueChanged.connect(self.do_hd_data)
-        self.sbHDFPGAMinor.valueChanged.connect(self.do_hd_data)
-        self.sbHDFPGALab.valueChanged.connect(self.do_hd_data)
+        self.pbHDSend.clicked.connect(self.do_hd_version_data)
+        self.pbDGSend.clicked.connect(self.do_dg_version_data)
+        self.pbHDSend.clicked.connect(self.do_hd_serial_data)
+        self.pbDGSend.clicked.connect(self.do_dg_serial_data)
 
-        self.sbDGMajor.valueChanged.connect(self.do_dg_data)
-        self.sbDGMinor.valueChanged.connect(self.do_dg_data)
-        self.sbDGMicro.valueChanged.connect(self.do_dg_data)
-        self.sbDGBuild.valueChanged.connect(self.do_dg_data)
-        self.sbDGFPGAid.valueChanged.connect(self.do_dg_data)
-        self.sbDGFPGAMajor.valueChanged.connect(self.do_dg_data)
-        self.sbDGFPGAMinor.valueChanged.connect(self.do_dg_data)
-        self.sbDGFPGALab.valueChanged.connect(self.do_dg_data)
-
     @Slot()
-    def do_hd_data(self):
+    def do_hd_version_data(self):
         """
         the slot which is called to send the data
         by calling the denaliMessage API cmd_send_version_hd_data
@@ -109,7 +107,7 @@
         sb_hd_fpga_major = self.sbHDFPGAMajor.value()
         sb_hd_fpga_minor = self.sbHDFPGAMinor.value()
         sb_hd_fpga_lab = self.sbHDFPGALab.value()
-        self.hd_simulator.cmd_send_version_hd_data(
+        self.interface.hd.cmd_send_version_hd_data(
             sb_hd_major,
             sb_hd_minor,
             sb_hd_micro,
@@ -121,7 +119,7 @@
         )
 
     @Slot()
-    def do_dg_data(self):
+    def do_dg_version_data(self):
         """
         the slot which is called to send the data
         by calling the denaliMessage API cmd_send_version_dg_data
@@ -136,7 +134,7 @@
         sb_dg_fpga_major = self.sbDGFPGAMajor.value()
         sb_dg_fpga_minor = self.sbDGFPGAMinor.value()
         sb_dg_fpga_lab = self.sbDGFPGALab.value()
-        self.hd_simulator.cmd_send_version_dg_data(
+        self.interface.dg.cmd_send_version_dg_data(
             sb_dg_major,
             sb_dg_minor,
             sb_dg_micro,
@@ -146,3 +144,25 @@
             sb_dg_fpga_minor,
             sb_dg_fpga_lab,
         )
+
+    @Slot()
+    def do_hd_serial_data(self):
+        """
+        the slot which is called to send the data
+        by calling the denaliMessage API cmd_send_serial_hd_data
+        :return: none
+        """
+        self.interface.hd.cmd_send_serial_hd_data(
+            self.leHDSerial.text()
+        )
+
+    @Slot()
+    def do_dg_serial_data(self):
+        """
+        the slot which is called to send the data
+        by calling the denaliMessage API cmd_send_serial_dg_data
+        :return: none
+        """
+        self.interface.dg.cmd_send_serial_dg_data(
+            self.leDGSerial.text()
+        )