Index: leahi_dialin/ui/td_messaging.py
===================================================================
diff -u -rd0d61f13cca978f73a2fc2f628a6f5e8ff4e2018 -r64744c14a4ab6b2b665cff84edf70b1be861b2ef
--- leahi_dialin/ui/td_messaging.py	(.../td_messaging.py)	(revision d0d61f13cca978f73a2fc2f628a6f5e8ff4e2018)
+++ leahi_dialin/ui/td_messaging.py	(.../td_messaging.py)	(revision 64744c14a4ab6b2b665cff84edf70b1be861b2ef)
@@ -269,28 +269,56 @@
 
         self.can_interface.send(message, 0)
 
-    def td_versions(self, firmware: str, FPGA: str, compatibility: str, serial: str):
+    def td_versions(self, major: int, minor: int, micro: int, build: int,
+                        fpga_id: int, fpga_major: int, fpga_minor: int, fpga_lab: int,
+                        compatibility_rev: int):
         """
         Broadcasts the current TD Version Data
-        @param firmware     : TD firmware version
-        @param FPGA         : TD FPGA version
-        @param compatibility: Firmware compatibility
-        @param serial       : TD Serial Number
+        @param major: (uint) - Major version number
+        @param minor: (uint) - Minor version number
+        @param micro: (uint) - Micro version number
+        @param build: (uint) - Build version number
+        @param fpga_id: (int) - FPGA id version number
+        @param fpga_major: (int) - FPGA Major version number
+        @param fpga_minor: (int) - FPGA Minor version number
+        @param fpga_lab: (int) - FPGA Lab version number
+        @param compatibility_rev: (uint) - The FWs/UI compatibility revision
         @return: None
         """
         # TODO: Place holder for versions, not all information for versions may be in the same message so structure will vary 
         if not self.can_enabled:
             raise ValueError("CAN Interface is not enabled")
-               
 
-        payload =  conversions.integer_to_bytearray(firmware        )
-        payload += conversions.integer_to_bytearray(FPGA            )
-        payload += conversions.integer_to_bytearray(compatibility   )
-        payload += conversions.integer_to_bytearray(serial          )
+        payload =  conversions.unsigned_byte_to_bytearray   (major            )
+        payload += conversions.unsigned_byte_to_bytearray   (minor            )
+        payload += conversions.unsigned_byte_to_bytearray   (micro            )
+        payload += conversions.unsigned_short_to_bytearray  (build            )
+        payload += conversions.unsigned_byte_to_bytearray   (fpga_id          )
+        payload += conversions.unsigned_byte_to_bytearray   (fpga_major       )
+        payload += conversions.unsigned_byte_to_bytearray   (fpga_minor       )
+        payload += conversions.unsigned_byte_to_bytearray   (fpga_lab         )
+        payload += conversions.unsigned_integer_to_bytearray(compatibility_rev)
 
         message = CAN.DenaliMessage.build_message(
                                             channel_id=CAN.DenaliChannels.td_sync_broadcast_ch_id,
                                             message_id=msg_ids.MsgIds.MSG_ID_TD_VERSION_REPONSE.value,
                                             payload=payload)
 
+        self.can_interface.send(message, 0)
+
+
+    def cmd_send_serial_td_data(self, serial: str):
+        """
+        the td version serial response message method
+        @param serial: serial number
+        @return: None
+        """
+        # TODO: replace with proper payload  and message ID once message is defined 
+        payload = bytes(serial, 'ascii') + b'\x00'
+
+        message = CAN.DenaliMessage.build_message(
+                                            channel_id=CAN.DenaliChannels.td_to_ui_ch_id,
+                                            message_id=0x95,
+                                            payload=payload)
+
         self.can_interface.send(message, 0)
\ No newline at end of file