Index: firmware/App/Controllers/PresOccl.h
===================================================================
diff -u -r14d740bbb065f043daaa348bcda5f447e1c16a32 -rf9b9bf3f04d5ec74b9f1604cb1eb9729de001705
--- firmware/App/Controllers/PresOccl.h	(.../PresOccl.h)	(revision 14d740bbb065f043daaa348bcda5f447e1c16a32)
+++ firmware/App/Controllers/PresOccl.h	(.../PresOccl.h)	(revision f9b9bf3f04d5ec74b9f1604cb1eb9729de001705)
@@ -47,14 +47,30 @@
     OCCLUSION_SENSOR_DIAL_IN_PUMP,          ///< Dialysate inlet pump occlusion sensor
     OCCLUSION_SENSOR_DIAL_OUT_PUMP,         ///< Dialysate outlet pump occlusion sensor
     NUM_OF_OCCLUSION_SENSORS                ///< Number of occlusion sensors
-} OCCLUSION_SENSORS_T;
+} OCCLUSION_SENSORS_T;
+
+/// Enumeration of arterial/venous pressure limits states.
+typedef enum PressureLimitsStates
+{
+    PRESSURE_LIMITS_STATE_OFF = 0,          ///< Off - not pressure low/high alarms will be detected)
+    PRESSURE_LIMITS_STATE_IDLE,             ///< Idle - in Treatment mode state where BP is stopped - no pressure low/high alarms
+    PRESSURE_LIMITS_STATE_WIDE,             ///< Wide - in Treatment mode state where BP is running but wide limits apply
+    PRESSURE_LIMITS_STATE_STABILIZATION,    ///< Stabilization - in Treatment mode state where BP is running (dialysis or stop), but need to stabilize first
+    PRESSURE_LIMITS_STATE_STABLE,           ///< Stable - in Treatment mode state where BP is running (dialysis or stop) and limit windows apply
+    NUM_OF_PRESSURE_LIMITS_STATES           ///< Number of pressure limits states
+} PRESSURE_LIMITS_STATES_T;
 
 /// Payload record structure for the pressure & occlusions data message.
 typedef struct
 {
     F32 arterialPressure;                   ///< Latest arterial pressure (mmHg)
     F32 venousPressure;                     ///< Latest venous pressure (mmHg)
     U32 bldPumpOcclusion;                   ///< Latest BP occlusion (no units)
+    U32 presLimitState;                     ///< Current pressure limits state (enum-stabilization or stable)
+    S32 artMinLimit;                        ///< Current arterial minimum pressure limit (mmHg)
+    S32 artMaxLimit;                        ///< Current arterial maximum pressure limit (mmHg)
+    S32 venMinLimit;                        ///< Current venous minimum pressure limit (mmHg)
+    S32 venMaxLimit;                        ///< Current venous maximum pressure limit (mmHg)
 } PRESSURE_OCCLUSION_DATA_T;
 
 // ********** public function prototypes **********
@@ -64,7 +80,11 @@
 
 void execPresOcclTest( void );
 SELF_TEST_STATUS_T execPresOcclDryTest( void );
-SELF_TEST_STATUS_T execPresOcclSelfTest( void );
+SELF_TEST_STATUS_T execPresOcclSelfTest( void );
+
+void setPressureLimitsToOuterBounds( void );
+void updatePressureLimitWindows( void );
+void signalUserRateChange( void );
 
 F32 getMeasuredArterialPressure( void );
 F32 getFilteredArterialPressure( void );
@@ -76,7 +96,6 @@
 BOOL isCartridgeLoaded( void );
 BOOL isCartridgeUnloaded( void );
 BOOL isSalineBagEmpty( void );
-void signalStartDialysisStartOrResume( void );
 
 void setOcclusionInstallLevel( void );