Index: dialin/hd/hd_events.py
===================================================================
diff -u -r2e20a6df69477c796f8c8912ff77cf3b1c1c1b45 -r9ddc76fb8069b4f5e926dbb3cdcd977668018341
--- dialin/hd/hd_events.py	(.../hd_events.py)	(revision 2e20a6df69477c796f8c8912ff77cf3b1c1c1b45)
+++ dialin/hd/hd_events.py	(.../hd_events.py)	(revision 9ddc76fb8069b4f5e926dbb3cdcd977668018341)
@@ -154,6 +154,7 @@
         op_mode = 0
         sub_mode = 0
         sub_state = 0
+        fourth_state = 0
         current_sub_tuple = []
 
         event_id = struct.unpack('i', bytearray(
@@ -170,6 +171,8 @@
                 message['message'][MsgFieldPositions.START_POS_FIELD_3+1:MsgFieldPositions.START_POS_FIELD_3+2]))[0]
             sub_state = struct.unpack('<B', bytearray(
                 message['message'][MsgFieldPositions.START_POS_FIELD_3+2:MsgFieldPositions.START_POS_FIELD_3+3]))[0]
+            fourth_state = struct.unpack('<B', bytearray(
+                message['message'][MsgFieldPositions.START_POS_FIELD_3+3:MsgFieldPositions.START_POS_FIELD_4]))[0]
             event_data_type_2 = struct.unpack('i', bytearray(
                 message['message'][MsgFieldPositions.START_POS_FIELD_4:MsgFieldPositions.END_POS_FIELD_4]))[0]
             struct_data_type = self._hd_event_data_type[HDEventDataType(event_data_type_2).name]
@@ -276,7 +279,7 @@
             event_tuple = (datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f'), event_state_name, event_data_1, event_data_2)
 
         elif event_state_name == HDEventList.HD_EVENT_OPERATION_STATUS.name:
-            event_tuple = (time(), op_mode, sub_mode, sub_state)
+            event_tuple = (time(), op_mode, sub_mode, sub_state, fourth_state)
 
         # Update event dictionary
         self._hd_event_dictionary[event_state_name].append(event_tuple)