Index: simulator/plugins/HDOpMode/loader.py
===================================================================
diff -u -r68ba5188e33d6f05936fb77626822f416b9abb37 -ra7674c35d63942e38006f75c3ebe52b0df16ae42
--- simulator/plugins/HDOpMode/loader.py	(.../loader.py)	(revision 68ba5188e33d6f05936fb77626822f416b9abb37)
+++ simulator/plugins/HDOpMode/loader.py	(.../loader.py)	(revision a7674c35d63942e38006f75c3ebe52b0df16ae42)
@@ -12,14 +12,17 @@
 from dialin.ui.hd_simulator import HDSimulator
 # plugin specific
 from dialin.common.hd_defs import HDDefs
+from dialin.common.hd_defs import HD_Standby_States
 
 
 class Loader(DynamicLoader):
     """
     The HD Op Mode ui loader
     """
     tbReset: QtWidgets.QToolButton
+    tbSend: QtWidgets.QToolButton
     tblOpMode: QtWidgets.QTableWidget
+    tblSubMode: QtWidgets.QTableWidget
 
     def __init__(self, hd_simulator: HDSimulator):
         super().__init__(os.path.dirname(__file__), hd_simulator)
@@ -30,16 +33,19 @@
         :return: none
         """
         self.tbReset = self.find_tool_button('tbReset')
-
+        self.tbSend = self.find_tool_button('tbSend')
         self.tblOpMode = self.find_table_widget('tblOpMode')
+        self.tblSubMode = self.find_table_widget('tblSubMode')
 
     def _init_connections(self):
         """
         initializes the widgets connections
         :return: none
         """
         self.tbReset.clicked.connect(self._init_widgets)
+        self.tbSend.clicked.connect(self.do_treatment_states)
         self.tblOpMode.currentCellChanged.connect(self.do_treatment_states)
+        self.tblSubMode.currentCellChanged.connect(self.do_treatment_states)
 
     @Slot()
     def _init_widgets(self):
@@ -48,6 +54,7 @@
         :return: none
         """
         self.tblOpMode.setCurrentCell(HDDefs.MODE_INIT.value, 0)
+        self.tblSubMode.setCurrentCell(HD_Standby_States.STANDBY_START_STATE.value, 0)
 
     @Slot()
     def do_treatment_states(self):
@@ -56,6 +63,8 @@
         :return: none
         """
         op_mode = int(self.tblOpMode.verticalHeaderItem(self.tblOpMode.currentRow()).text())
+        sub_mode = int(self.tblSubMode.verticalHeaderItem(self.tblSubMode.currentRow()).text())
         self.hd_simulator.cmd_send_hd_operation_mode(
-            op_mode
+            op_mode,
+            sub_mode
         )