Index: dialin/common/msg_ids.py
===================================================================
diff -u -r3b58405e25515e1cf391d513a5b6551ab3468369 -rd1e3f50dceb4c11cff5af632b39c64b4407aad68
--- dialin/common/msg_ids.py	(.../msg_ids.py)	(revision 3b58405e25515e1cf391d513a5b6551ab3468369)
+++ dialin/common/msg_ids.py	(.../msg_ids.py)	(revision d1e3f50dceb4c11cff5af632b39c64b4407aad68)
@@ -185,6 +185,7 @@
     MSG_ID_HD_SWITCHES_DATA = 0XA2
     MSG_ID_HD_FANS_DATA = 0XA3
     MSG_ID_DG_DIALYSATE_FLOW_METER_DATA = 0xA6
+    MSG_ID_DG_ALARM_INFO = 0xA7
     MSG_ID_CAN_ERROR_COUNT = 0X999
     MSG_ID_TESTER_LOGIN_REQUEST = 0X8000
     MSG_ID_DIAL_OUT_FLOW_SET_PT_OVERRIDE = 0X8001
@@ -375,6 +376,7 @@
     MSG_ID_DG_STOP_RTC_CLOCK = 0XA045
     MSG_ID_DG_DRAIN_PUMP_MEASURED_RPM_OVERRIDE = 0XA046
     MSG_ID_DG_SUPER_CLEAR_ALARMS_CMD = 0XA047
+    MSG_ID_DG_ALARM_INFO_SEND_INTERVAL_OVERRIDE = 0xA048
 
     MSG_ID_HD_DEBUG_EVENT = 0XFFF1
     MSG_ID_DG_DEBUG_EVENT = 0XFFF2
Index: dialin/dg/alarms.py
===================================================================
diff -u -r3b58405e25515e1cf391d513a5b6551ab3468369 -rd1e3f50dceb4c11cff5af632b39c64b4407aad68
--- dialin/dg/alarms.py	(.../alarms.py)	(revision 3b58405e25515e1cf391d513a5b6551ab3468369)
+++ dialin/dg/alarms.py	(.../alarms.py)	(revision d1e3f50dceb4c11cff5af632b39c64b4407aad68)
@@ -17,7 +17,8 @@
 from logging import Logger
 
 from .constants import RESET, NO_RESET
-from ..common.msg_defs import MsgIds
+from ..common.msg_defs import MsgIds, MsgFieldPositions
+from ..utils.checks import check_broadcast_interval_override_ms
 from ..protocols.CAN import DenaliMessage, DenaliChannels
 from ..utils.base import AbstractSubSystem, publish
 from ..utils.conversions import integer_to_bytearray
@@ -50,10 +51,14 @@
             msg_id = MsgIds.MSG_ID_ALARM_CONDITION_CLEARED.value
             self.can_interface.register_receiving_publication_function(channel_id, msg_id, self._handler_alarm_condition_clear)
 
+            msg_id = MsgIds.MSG_ID_DG_ALARM_INFO.value
+            self.can_interface.register_receiving_publication_function(channel_id, msg_id, self._handler_alarm_information_sync)
+
         # alarm states based on received DG alarm activation and alarm clear messages
         self.alarm_states = [False] * 500
         # alarm condition states based on received DG alarm activation and clear condition messages
         self.alarm_conditions = [False] * 500
+        self.safety_shutdown_active = False
 
     def get_alarm_states(self):
         """
@@ -79,6 +84,14 @@
         """
         return self.alarm_states[alarm_id]
 
+    def get_safety_shutdown_activated(self):
+        """
+        Gets the state of the DG safety shutdown signal.
+
+        @return: (bool) safety shutdown line is activated (T/F)
+        """
+        return self.safety_shutdown_active
+
     @publish(["alarm_states"])
     def _handler_alarm_activate(self, message):
         """
@@ -117,6 +130,19 @@
         alarm_id = struct.unpack('<H', bytearray(message['message'][self.START_POS_ALARM_ID:self.END_POS_ALARM_ID]))
         self.alarm_conditions[alarm_id[0]] = False
 
+    @publish(["safety_shutdown_active"])
+    def _handler_alarm_information_sync(self, message):
+        """
+        Handles published DG alarm information broadcast messages.
+
+        @param message:  published DG alarm information message
+        @return: none
+        """
+
+        saf = struct.unpack('i', bytearray(
+            message['message'][MsgFieldPositions.START_POS_FIELD_1:MsgFieldPositions.END_POS_FIELD_1]))
+        self.safety_shutdown_active = True if saf[0] == 1 else False
+
     def cmd_alarm_state_override(self, alarm: int, state: int, reset: int = NO_RESET) -> int:
         """
         Constructs and sends the alarm state override command
@@ -182,3 +208,45 @@
             # response payload is OK or not OK
             return 1 == received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
         return False
+
+    def cmd_alarm_info_broadcast_interval_override(self, ms: int = 1000, reset: int = NO_RESET):
+        """
+        Constructs and sends the alarm information broadcast interval override command
+        Constraints:
+            Must be logged into DG.
+            Given interval must be non-zero and a multiple of the DG general task interval (50 ms).
+
+        @param ms:  integer - interval (in ms) to override with
+        @param reset:  integer - 1 to reset a previous override, 0 to override
+        @return: 1 if successful, zero otherwise
+        """
+
+        if not check_broadcast_interval_override_ms(ms):
+            return False
+
+        rst = integer_to_bytearray(reset)
+        mis = integer_to_bytearray(ms)
+        payload = rst + mis
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dg_ch_id,
+                                              message_id=MsgIds.MSG_ID_DG_ALARM_INFO_SEND_INTERVAL_OVERRIDE.value,
+                                              payload=payload)
+
+        self.logger.debug("override DG alarm information broadcast interval")
+
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            if reset == RESET:
+                str_res = "reset back to normal: "
+            else:
+                str_res = str(ms) + " ms: "
+            self.logger.debug("DG alarm information broadcast interval overridden to " + str_res +
+                              str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]))
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
+            return False
Index: dialin/hd/alarms.py
===================================================================
diff -u -r3b58405e25515e1cf391d513a5b6551ab3468369 -rd1e3f50dceb4c11cff5af632b39c64b4407aad68
--- dialin/hd/alarms.py	(.../alarms.py)	(revision 3b58405e25515e1cf391d513a5b6551ab3468369)
+++ dialin/hd/alarms.py	(.../alarms.py)	(revision d1e3f50dceb4c11cff5af632b39c64b4407aad68)
@@ -383,7 +383,7 @@
         alarm_id = struct.unpack('<H', bytearray(message['message'][self.START_POS_ALARM_ID:self.END_POS_ALARM_ID]))
         self.alarm_conditions[alarm_id[0]] = False
 
-    @publish(["alarm_volume", "alarm_audio_curr_hg", "alarm_audio_curr_lg", "alarm_backup_audio_curr"])
+    @publish(["alarm_volume", "alarm_audio_curr_hg", "alarm_audio_curr_lg", "alarm_backup_audio_curr","safety_shutdown_active"])
     def _handler_alarm_information_sync(self, message):
         """
         Handles published HD alarm information broadcast messages.