Index: leahi_dialin/dd/dialysate_delivery.py
===================================================================
diff -u -r1ca63288b87154587f2e9df7624359fc8c419b9c -rb9e9c4477d1083db8d96beafd98ae6cd96ea432f
--- leahi_dialin/dd/dialysate_delivery.py	(.../dialysate_delivery.py)	(revision 1ca63288b87154587f2e9df7624359fc8c419b9c)
+++ leahi_dialin/dd/dialysate_delivery.py	(.../dialysate_delivery.py)	(revision b9e9c4477d1083db8d96beafd98ae6cd96ea432f)
@@ -99,16 +99,9 @@
             self.can_interface.register_receiving_publication_function(channel_id,
                                                                        self.msg_id_dd_debug_event,
                                                                        self._handler_dd_debug_event_sync)
-            # For current builds and setups without UI, there are no CAN messages sent on the bus to let the
-            # subsystems know there are other nodes and start publishing. Dialin will send a plain ACK to the CANbus over
-            # the dd channel to start publishing.
-            message = DenaliMessage.build_message(
-                channel_id=DenaliChannels.dialin_to_dd_ch_id,
-                message_id=MsgIds.MSG_ID_ACK_MESSAGE_THAT_REQUIRES_ACK.value,
-                payload=bytearray(),
-                seq=0)
-            if message is not None:
-                self.can_interface.send(message, 0, is_ack=True)
+            # Dialin will send a login message during construction. This is for the leahi subsystems to start
+            # publishing CAN data when there is no UI connected as the UI typically does this job.
+            self.cmd_log_in_to_dd()
 
         # create properties
         self.dd_op_mode_timestamp = 0.0
Index: leahi_dialin/fp/filtration_purification.py
===================================================================
diff -u -r1ca63288b87154587f2e9df7624359fc8c419b9c -rb9e9c4477d1083db8d96beafd98ae6cd96ea432f
--- leahi_dialin/fp/filtration_purification.py	(.../filtration_purification.py)	(revision 1ca63288b87154587f2e9df7624359fc8c419b9c)
+++ leahi_dialin/fp/filtration_purification.py	(.../filtration_purification.py)	(revision b9e9c4477d1083db8d96beafd98ae6cd96ea432f)
@@ -93,16 +93,9 @@
             self.can_interface.register_receiving_publication_function(channel_id,
                                                                        MsgIds.MSG_ID_FP_DEF_STATUS_RESPONSE.value,
                                                                        self._handler_fp_defeatured_response)
-            # For current builds and setups without UI, there are no CAN messages sent on the bus to let the
-            # subsystems know there are other nodes and start publishing. Dialin will send a plain ACK to the CANbus over
-            # the dd channel to start publishing.
-            message = DenaliMessage.build_message(
-                channel_id=DenaliChannels.dialin_to_fp_ch_id,
-                message_id=MsgIds.MSG_ID_ACK_MESSAGE_THAT_REQUIRES_ACK.value,
-                payload=bytearray(),
-                seq=0)
-            if message is not None:
-                self.can_interface.send(message, 0, is_ack=True)
+            # Dialin will send a login message during construction. This is for the leahi subsystems to start
+            # publishing CAN data when there is no UI connected as the UI typically does this job.
+            self.cmd_log_in_to_fp()
 
         # create properties
         self.fp_defeatured_timestamp = 0.0
Index: leahi_dialin/td/treatment_delivery.py
===================================================================
diff -u -r1ca63288b87154587f2e9df7624359fc8c419b9c -rb9e9c4477d1083db8d96beafd98ae6cd96ea432f
--- leahi_dialin/td/treatment_delivery.py	(.../treatment_delivery.py)	(revision 1ca63288b87154587f2e9df7624359fc8c419b9c)
+++ leahi_dialin/td/treatment_delivery.py	(.../treatment_delivery.py)	(revision b9e9c4477d1083db8d96beafd98ae6cd96ea432f)
@@ -100,16 +100,9 @@
             self.can_interface.register_receiving_publication_function(DenaliChannels.ui_to_td_ch_id,
                                                                        self.msg_id_ui_version_info_response,
                                                                        self._handler_ui_version_response_sync)
-            # For current builds and setups without UI, there are no CAN messages sent on the bus to let the
-            # subsystems know there are other nodes and start publishing. Dialin will send a plain ACK to the CANbus over
-            # the dd channel to start publishing.
-            message = DenaliMessage.build_message(
-                channel_id=DenaliChannels.dialin_to_td_ch_id,
-                message_id=MsgIds.MSG_ID_ACK_MESSAGE_THAT_REQUIRES_ACK.value,
-                payload=bytearray(),
-                seq=0)
-            if message is not None:
-                self.can_interface.send(message, 0, is_ack=True)
+            # Dialin will send a login message during construction. This is for the leahi subsystems to start
+            # publishing CAN data when there is no UI connected as the UI typically does this job.
+            self.cmd_log_in_to_td()
 
         # create properties
         self.td_op_mode_timestamp = 0.0