Index: HDDefs.h
===================================================================
diff -u -red99101f153fb2e6139f9be116cda8b46082406e -r5f26cdef8f36c443cb75ba8c492a9c88705ba742
--- HDDefs.h	(.../HDDefs.h)	(revision ed99101f153fb2e6139f9be116cda8b46082406e)
+++ HDDefs.h	(.../HDDefs.h)	(revision 5f26cdef8f36c443cb75ba8c492a9c88705ba742)
@@ -664,12 +664,10 @@
     TREATMENT_PARAM_BP_MEAS_INTERVAL,                                   ///< Blood pressure measurement interval (in minutes)
     TREATMENT_PARAM_RINSEBACK_FLOW_RATE,                                ///< Rinseback flow rate (in mL/min)
     TREATMENT_PARAM_LAST_UINT = TREATMENT_PARAM_RINSEBACK_FLOW_RATE,    ///< Last unsigned integer treatment parameter
-    TREATMENT_PARAM_ART_PRESSURE_LOW_LIMIT,                             ///< Arterial pressure low alarm limit (in mmHg)
-    TREATMENT_PARAM_FIRST_INT = TREATMENT_PARAM_ART_PRESSURE_LOW_LIMIT, ///< First integer treatment parameter
-    TREATMENT_PARAM_ART_PRESSURE_HIGH_LIMIT,                            ///< Arterial pressure high alarm limit (in mmHg)
-    TREATMENT_PARAM_VEN_PRESSURE_LOW_LIMIT,                             ///< Venous pressure low alarm limit (in mmHg)
-    TREATMENT_PARAM_VEN_PRESSURE_HIGH_LIMIT,                            ///< Venous pressure high alarm limit (in mmHg)
-    TREATMENT_PARAM_LAST_INT = TREATMENT_PARAM_VEN_PRESSURE_HIGH_LIMIT, ///< Last integer treatment parameter
+    TREATMENT_PARAM_ART_PRES_LIMIT_WINDOW,                              ///< Arterial pressure alarm limit window (in mmHg)
+    TREATMENT_PARAM_FIRST_INT = TREATMENT_PARAM_ART_PRES_LIMIT_WINDOW,  ///< First integer treatment parameter
+    TREATMENT_PARAM_VEN_PRES_LIMIT_WINDOW,                              ///< Venous pressure alarm limit window (in mmHg)
+    TREATMENT_PARAM_LAST_INT = TREATMENT_PARAM_VEN_PRES_LIMIT_WINDOW,   ///< Last integer treatment parameter
     TREATMENT_PARAM_HEPARIN_DISPENSE_RATE,                              ///< Heparin dispense rate (in mL/hr)
     TREATMENT_PARAM_FIRST_F32 = TREATMENT_PARAM_HEPARIN_DISPENSE_RATE,  ///< First floating point treatment parameter
     TREATMENT_PARAM_HEPARIN_BOLUS_VOLUME,                               ///< Heparin bolus volume (in mL)
@@ -738,10 +736,8 @@
     UF_RATE_CHANGE_EVENT,                                               ///< Ultrafiltration rate change event
     UF_START_RESUME_EVENT,                                              ///< Ultrafiltration start or resume event
     UF_PAUSE_EVENT,                                                     ///< Ultrafiltration pause event
-    ARTERIAL_PRESSURE_LOWER_LIMIT_CHANGE_EVENT,                         ///< Arterial pressure lower limit change event
-    ARTERIAL_PRESSURE_UPPER_LIMIT_CHANGE_EVENT,                         ///< Arterial pressure upper limit change event
-    VENOUS_PRESSURE_LOWER_LIMIT_CHANGE_EVENT,                           ///< Venous pressure lower limit change event
-    VENOUS_PRESSURE_UPPER_LIMIT_CHANGE_EVENT,                           ///< Venous pressure upper limit change event
+    ARTERIAL_PRESSURE_LIMIT_WINDOW_CHANGE_EVENT,                        ///< Arterial pressure limit window change event
+    VENOUS_PRESSURE_LIMIT_WINDOW_CHANGE_EVENT,                          ///< Venous pressure limit window change event
     HEPARIN_BOLUS_START_EVENT,                                          ///< Heparin bolus start event
     HEPARIN_BOLUS_END_EVENT,                                            ///< Heparin bolus end event
     HEPARIN_START_RESUME_EVENT,                                         ///< Heparin start or resume event
Index: MsgDefs.h
===================================================================
diff -u -r60c09a5d4d3143212223491719d1e8edc5efc3da -r5f26cdef8f36c443cb75ba8c492a9c88705ba742
--- MsgDefs.h	(.../MsgDefs.h)	(revision 60c09a5d4d3143212223491719d1e8edc5efc3da)
+++ MsgDefs.h	(.../MsgDefs.h)	(revision 5f26cdef8f36c443cb75ba8c492a9c88705ba742)
@@ -531,8 +531,8 @@
     REQUEST_REJECT_REASON_SALINE_BOLUS_IN_PROGRESS = 16,                ///< A saline bolus is in progress
     REQUEST_REJECT_REASON_PARAM_OUT_OF_RANGE = 17,                      ///< A treatment parameter is out of range
     REQUEST_REJECT_REASON_HEPARIN_PRESTOP_EXCEEDS_DURATION = 18,        ///< The Heparin pre-stop setting is greater than the treatment duration
-    REQUEST_REJECT_REASON_ARTERIAL_PRESSURE_LOW_VS_HIGH = 19,           ///< Arterial pressure low and high alarm limits are not inconsistent
-    REQUEST_REJECT_REASON_VENOUS_PRESSURE_LOW_VS_HIGH = 20,             ///< Venous pressure low and high alarm limits are inconsistent
+    REQUEST_REJECT_REASON_AVAILABLE_1 = 19,                             ///< Not used
+    REQUEST_REJECT_REASON_AVAILABLE_2 = 20,                             ///< Not used
     REQUEST_REJECT_REASON_SALINE_MAX_VOLUME_REACHED = 21,               ///< Saline bolus volume maximum has been reached - no more saline allowed
     REQUEST_REJECT_REASON_SALINE_BOLUS_NOT_IN_PROGRESS = 22,            ///< A saline bolus is not in progress
     REQUEST_REJECT_REASON_ACTION_DISABLED_IN_CURRENT_STATE = 23,        ///< Requested user action is disabled in current state