Index: dialin/common/msg_defs.py
===================================================================
diff -u -r287af45040e35882e001fb3ea835f304007870c4 -re6324506ed792e22dc419249a6e9225e602642c6
--- dialin/common/msg_defs.py	(.../msg_defs.py)	(revision 287af45040e35882e001fb3ea835f304007870c4)
+++ dialin/common/msg_defs.py	(.../msg_defs.py)	(revision e6324506ed792e22dc419249a6e9225e602642c6)
@@ -94,6 +94,7 @@
     MSG_ID_DG_FANS_DATA = 0x48                                  # DG broadcast fans data
     MSG_ID_HD_CALIBRATION_DATA = 0x49                           # HD broadcast calibration data
     MSG_ID_DG_CALIBRATION_DATA = 0x4A                           # DG broadcast calibration data
+    MSG_ID_HD_PRE_TREATMENT_UF_RESPONSE = 0x50                  # HD response to user request to adjust the ultrafiltration in pre-treatment
 
     MSG_ID_CAN_ERROR_COUNT = 0x999                              # test code in support of EMC testing
 
Index: dialin/squish/denaliMessages.py
===================================================================
diff -u -ra5e1daa9b42023d67184fd4da5bd04aa164c27dc -re6324506ed792e22dc419249a6e9225e602642c6
--- dialin/squish/denaliMessages.py	(.../denaliMessages.py)	(revision a5e1daa9b42023d67184fd4da5bd04aa164c27dc)
+++ dialin/squish/denaliMessages.py	(.../denaliMessages.py)	(revision e6324506ed792e22dc419249a6e9225e602642c6)
@@ -1451,4 +1451,31 @@
     frames = messageBuilder.toCandumpFormat(frames)
     for frame in frames:
         subprocess.call(['cansend', 'can0', '001#{}'.format(frame)])
-    waitForMessageToBeSent()
\ No newline at end of file
+    waitForMessageToBeSent()
+
+
+def buildAlarmClearedCondition(vAlarmID):
+    """
+    the Alarm Condition Cleared message builder method
+    | MSG  | CAN ID    | Box | Type   | Ack | Src | Dst | Description             | #1:(U32)            |
+    |:----:|:---------:|:---:|:------:|:---:|:---:|:---:|:-----------------------:|:--:                 |
+    |0x3F00| 0x001,2,4 | 1   | Event  | Y   | HD  | All | Alarm Condition Cleared | \ref Data::mAlarmID |
+    :param vAlarmID: (int) Alarm ID
+    :return: (str) built message frame(s)
+    """
+    msg = messageBuilder.buildMessage(63, 4, True,
+                                      utils.toI32(vAlarmID))
+    return messageBuilder.toFrames(msg)
+
+
+def setAlarmClearedCondition(vAlarmID):
+    """
+    the Alarm Condition Cleared message setter/sender method
+    :param vAlarmID: (int) Alarm ID
+    :return: none
+    """
+    frames = buildAlarmClearedCondition(vAlarmID)
+    frames = messageBuilder.toCandumpFormat(frames)
+    for frame in frames:
+        subprocess.call(['cansend', 'can0', '001#{}'.format(frame)])
+    waitForMessageToBeSent()
Index: dialin/ui/hd_simulator.py
===================================================================
diff -u -r287af45040e35882e001fb3ea835f304007870c4 -re6324506ed792e22dc419249a6e9225e602642c6
--- dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 287af45040e35882e001fb3ea835f304007870c4)
+++ dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision e6324506ed792e22dc419249a6e9225e602642c6)
@@ -25,7 +25,7 @@
                              DenaliCanMessenger,
                              DenaliChannels)
 from ..utils.base import _AbstractSubSystem, _LogManager
-from ..utils.conversions import integer_to_bytearray
+from ..utils.conversions import integer_to_bytearray, float_to_bytearray
 
 YES = 1
 NO = 0
@@ -293,6 +293,24 @@
 
         self.can_interface.send(message, 0)
 
+    def cmd_send_uf_treatment_response(self, accepted, reason, volume):
+        """
+        Sends the uf volume adjustment response message in pre-treatment
+        :param accepted: (bool) the acceptance
+        :param reason: (uint) the reason for rejection
+        :param volume: (float) the acceptable/accepted ultrafiltration volume
+        :return: none
+        """
+        payload = integer_to_bytearray(accepted)
+        payload += integer_to_bytearray(reason)
+        payload += float_to_bytearray(volume)
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.hd_to_ui_ch_id,
+                                              message_id=MsgIds.MSG_ID_HD_PRE_TREATMENT_UF_RESPONSE.value,
+                                              payload=payload)
+
+        self.can_interface.send(message, 0)
+
     def cmd_send_end_treatment_response(self):
         """
         Sends an end treatment response