Index: leahi_dialin/common/msg_ids.py
===================================================================
diff -u -r29476a4a7b58c6d6decee115ac9bcadb0aa262ca -r1510aec00a44b89c7a13434ac241606dde1e4238
--- leahi_dialin/common/msg_ids.py	(.../msg_ids.py)	(revision 29476a4a7b58c6d6decee115ac9bcadb0aa262ca)
+++ leahi_dialin/common/msg_ids.py	(.../msg_ids.py)	(revision 1510aec00a44b89c7a13434ac241606dde1e4238)
@@ -125,7 +125,10 @@
     MSG_ID_USER_UF_SETTINGS_CHANGE_CONFIRMATION_RESPONSE = 0x67
     MSG_ID_DD_VOLTAGES_DATA = 0x68
     MSG_ID_DD_RINSE_PUMP_DATA = 0x69
-    MSG_ID_DD_PISTON_PUMP_CONTROL_DATA = 0xF0
+    MSG_ID_TD_HEPARIN_REQUEST           = 0x8A
+    MSG_ID_TD_HEPARIN_RESPONSE          = 0x8B
+    MSG_ID_TD_HEPARIN_DATA              = 0x8C
+    MSG_ID_DD_PISTON_PUMP_CONTROL_DATA  = 0xF0
 
     MSG_ID_TD_TESTER_LOGIN_REQUEST = 0x8000
     MSG_ID_TD_SOFTWARE_RESET_REQUEST = 0x8001