Index: dialin/ui/hd_simulator.py
===================================================================
diff -u -r261a2775ee96492502e969b458468b74f3406dad -r700458364d67df3f33a3006e9c5fd35607894c55
--- dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 261a2775ee96492502e969b458468b74f3406dad)
+++ dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 700458364d67df3f33a3006e9c5fd35607894c55)
@@ -2106,10 +2106,10 @@
         payload += float_to_bytearray(mc_speed)
         payload += float_to_bytearray(mc_current)
         payload += float_to_bytearray(pwm)
-        payload += corr_offset
-        payload += pump_calculated_rate
-        payload += uf_calculated_rate
-        payload += rotor_hall
+        payload += float_to_bytearray(corr_offset)
+        payload += float_to_bytearray(pump_calculated_rate)
+        payload += float_to_bytearray(uf_calculated_rate)
+        payload += integer_to_bytearray(rotor_hall)
 
         message = DenaliMessage.build_message(channel_id=DenaliChannels.hd_sync_broadcast_ch_id,
                                               message_id=MsgIds.MSG_ID_DIALYSATE_OUT_FLOW_DATA.value,