Index: firmware/App/Modes/ModeTreatment.c
===================================================================
diff -u -r15297305e75a0660672e224fc2018b7836682c84 -r37dac720d0a04a6f28ae8f60bf1320ca13989354
--- firmware/App/Modes/ModeTreatment.c	(.../ModeTreatment.c)	(revision 15297305e75a0660672e224fc2018b7836682c84)
+++ firmware/App/Modes/ModeTreatment.c	(.../ModeTreatment.c)	(revision 37dac720d0a04a6f28ae8f60bf1320ca13989354)
@@ -28,6 +28,7 @@
 #include "NVDataMgmt.h"
 #include "OperationModes.h"
 #include "PersistentAlarm.h"
+#include "PresOccl.h"
 #include "Reservoirs.h"
 #include "Rinseback.h"
 #include "RTC.h"
@@ -212,6 +213,8 @@
  *************************************************************************/
 U32 transitionToTreatmentMode( void )
 {
+    PRESSURE_LIMIT_CHANGE_RESPONSE_T respRecord;
+
     if ( ( getTestConfigStatus( TEST_CONFIG_RECOVER_TREATMENT ) != TRUE ) || ( getPreviousOperationMode() != DG_MODE_FAUL ) )
     {
         // Initialize treatment mode each time we transition to it
@@ -233,6 +236,13 @@
     // Enable venous bubble detection in treatment mode
     setVenousBubbleDetectionEnabled( TRUE );
 
+    // Read back limits for transmit to UI.
+    respRecord.artPresLimitWindowmmHg     = getTreatmentParameterS32( TREATMENT_PARAM_ART_PRES_LIMIT_WINDOW );
+    respRecord.venPresLimitWindowmmHg     = getTreatmentParameterS32( TREATMENT_PARAM_VEN_PRES_LIMIT_WINDOW );
+    respRecord.venPresLimitAsymmetricmmHg = getTreatmentParameterS32( TREATMENT_PARAM_VEN_PRES_LIMIT_ASYMMETRIC );
+    // Send response
+    sendPressureLimitsChangeResponse( &respRecord );
+
     return currentTreatmentState;
 }
 
@@ -752,6 +762,8 @@
                 sendTreatmentLogEventData( UF_START_RESUME_EVENT, 0.0, presUFRate );
             }
             transitionToDialysis();
+            // To update partial blood pump occlusion baseline - start of treatment
+            signalBloodPumpPressureOcclBaseline();
             result = TREATMENT_DIALYSIS_STATE;
         }
     }
@@ -1306,6 +1318,8 @@
                 // Set to new rate
                 result &= setTreatmentParameterU32( TREATMENT_PARAM_BLOOD_FLOW, bloodRate );
                 setDialysisBloodPumpFlowRate( getTreatmentParameterU32( TREATMENT_PARAM_BLOOD_FLOW ) );
+                // Update partial occlusion baseline when blood flow rate changes
+                signalBloodPumpPressureOcclBaseline();
             }
 
             // Handle dialysate flow rate changes
@@ -1316,6 +1330,8 @@
                 // Set to new rate
                 result &= setTreatmentParameterU32( TREATMENT_PARAM_DIALYSATE_FLOW, dialRate );
                 setDialysisDialInFlowAndUFRate( getTreatmentParameterU32( TREATMENT_PARAM_DIALYSATE_FLOW ), presMaxUFVolumeML, presUFRate );
+                // Update partial occlusion baseline when dialysate flow rate changes
+                signalBloodPumpPressureOcclBaseline();
             }
         }
         else