Index: dialin/common/msg_defs.py
===================================================================
diff -u -rd531ce09d0240e0ae542ea33cf8ebe4b8169825b -r98864b0156fd40696751c32e98415067c736f475
--- dialin/common/msg_defs.py	(.../msg_defs.py)	(revision d531ce09d0240e0ae542ea33cf8ebe4b8169825b)
+++ dialin/common/msg_defs.py	(.../msg_defs.py)	(revision 98864b0156fd40696751c32e98415067c736f475)
@@ -83,8 +83,11 @@
     MSG_ID_UI_TREATMENT_END_REQUEST = 0x3C                      # UI user treatment end request
     MSG_ID_HD_TREATMENT_END_RESPONSE = 0x3D                     # HD response to user request to end treatment
     MSG_ID_HD_AIR_TRAP_DATA = 0x003E                            # HD broadcast of air trap data
-    MSG_ID_USER_UF_PAUSE_RESUME_RESPONSE = 0x3F                 # HD response to user request to pause or resume UF
-    MSG_ID_DG_CONCENTRATE_PUMP_DATA = 0x42,                     # DG broadcast of concentrate pump data
+    MSG_ID_UI_ALARM_USER_ACKNOWLEDGE = 0x3F                     # UI user has acknowledged alarm
+    MSG_ID_UI_ALARM_USER_ACTION = 0x40                          # UI user has requested an alarm action
+    MSG_ID_USER_UF_PAUSE_RESUME_RESPONSE = 0x41                 # HD response to user request to pause or resume UF
+    MSG_ID_DG_CONCENTRATE_PUMP_DATA = 0x42                      # DG broadcast of concentrate pump data
+    MSG_ID_DG_PRIMING_STATUS_DATA = 0x43                        # HD priming status during cartridge prime
 
     MSG_ID_CAN_ERROR_COUNT = 0x999                              # test code in support of EMC testing