Index: leahi_dialin/ui/td_messaging.py
===================================================================
diff -u -r780b246f56ba5af6173f96b12917f077eceded71 -r79b09049832200d2adde2efd7d79a2407b57d09d
--- leahi_dialin/ui/td_messaging.py	(.../td_messaging.py)	(revision 780b246f56ba5af6173f96b12917f077eceded71)
+++ leahi_dialin/ui/td_messaging.py	(.../td_messaging.py)	(revision 79b09049832200d2adde2efd7d79a2407b57d09d)
@@ -108,7 +108,7 @@
 
         self.can_interface.send(message, 0)
 
-    def td_air_trap(self, low_level: int, upper_level: int, lower_level_raw: int, upper_level_raw: int, valve_state: int, controlling: bool):
+    def td_air_trap(self, low_level: int, upper_level: int, lower_level_raw: int, upper_level_raw: int, valve_state: int, controlling: int):
         """
         Broadcasts the current TD air trap data
         @param low_level        : lower level value
@@ -124,12 +124,12 @@
             raise ValueError("CAN Interface is not enabled")
 
 
-        payload =  conversions.integer_to_bytearray(low_level       )
-        payload += conversions.integer_to_bytearray(upper_level     )
-        payload += conversions.integer_to_bytearray(lower_level_raw )
-        payload += conversions.integer_to_bytearray(upper_level_raw )
-        payload += conversions.integer_to_bytearray(valve_state     )
-        payload += conversions.integer_to_bytearray(controlling     )
+        payload =  conversions.unsigned_integer_to_bytearray(low_level       )
+        payload += conversions.unsigned_integer_to_bytearray(upper_level     )
+        payload += conversions.unsigned_integer_to_bytearray(lower_level_raw )
+        payload += conversions.unsigned_integer_to_bytearray(upper_level_raw )
+        payload += conversions.unsigned_integer_to_bytearray(valve_state     )
+        payload += conversions.unsigned_integer_to_bytearray(controlling     )
 
         message = CAN.DenaliMessage.build_message(
                                             channel_id=CAN.DenaliChannels.td_sync_broadcast_ch_id,
@@ -322,4 +322,16 @@
                                             message_id=msg_ids.MsgIds.MSG_ID_TD_SERIAL_RESPONSE.value,
                                             payload=payload)
 
+        self.can_interface.send(message, 0)
+
+    def td_request_ui_versions(self):
+        """
+        the td request UI versions
+        
+        @return: None
+        """
+        message = CAN.DenaliMessage.build_message(
+                                            channel_id=CAN.DenaliChannels.td_to_ui_ch_id,
+                                            message_id=msg_ids.MsgIds.MSG_ID_TD_UI_VERSION_INFO_REQUEST.value)
+
         self.can_interface.send(message, 0)
\ No newline at end of file