Index: PIControllers.c
===================================================================
diff -u -rc6962f9353afede1a8c731490a105269dd88b7f8 -r742ee2add33924e4b6750bc88622f09e0791feb4
--- PIControllers.c	(.../PIControllers.c)	(revision c6962f9353afede1a8c731490a105269dd88b7f8)
+++ PIControllers.c	(.../PIControllers.c)	(revision 742ee2add33924e4b6750bc88622f09e0791feb4)
@@ -77,6 +77,8 @@
     { 0.0, 0.0, 1.0,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.1,  CONTROLLER_UNIDIRECTIONAL, FALSE, 0.0 },   // PI_CONTROLLER_ID_RO_PUMP_MAX_PRES
     { 0.0, 0.0, 1.0,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.5,  CONTROLLER_UNIDIRECTIONAL, FALSE, 0.0 },   // PI_CONTROLLER_ID_BOOST_PUMP_FLOW
     { 0.0, 0.0, 1.0,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.1,  CONTROLLER_UNIDIRECTIONAL, FALSE, 0.0 },   // PI_CONTROLLER_ID_BOOST_PUMP_PRES
+    { 0.0, 0.0, 0.0,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 75,  CONTROLLER_UNIDIRECTIONAL, FALSE, 0.0 },   // PI_CONTROLLER_ID_BICARB_VOL
+    { 0.0, 0.0, 0.0,  0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 300,  CONTROLLER_UNIDIRECTIONAL, FALSE, 0.0 },   // PI_CONTROLLER_ID_ACID_VOL
 #endif
 };
 
@@ -344,6 +346,48 @@
 
 /*********************************************************************//**
  * @brief
+ * The getPIControllerSignals function returns the latest requested signal sample.
+ * @details \b Inputs: none
+ * @details \b Outputs: none
+ * @details \b Alarms: ALARM_ID_XX_SOFTWARE_FAULT when invalid PI controller
+ * Id is passed.
+ * @details \b Alarms: ALARM_ID_XX_SOFTWARE_FAULT when invalid PI controller
+ * signal is passed.
+ * @param controllerID ID filter number
+ * @param signalID signal sample ID request
+ * @return latest sample requested
+ *************************************************************************/
+PI_CONTROLLER_SIGNALS_DATA getDebugPIControllerSignals( PI_CONTROLLER_ID_T controllerID )
+{
+    PI_CONTROLLER_T *controller;
+    PI_CONTROLLER_SIGNALS_DATA signals;
+
+    if ( controllerID < NUM_OF_PI_CONTROLLERS_IDS )
+    {
+        SET_CONTROLLER( controller, controllerID );
+
+        signals.controlSignalReference              = controller->referenceSignal;
+        signals.controlSignalMeasured               = controller->measuredSignal;
+        signals.controlSignalError                  = controller->errorSignal;
+        signals.controlSignalErrorSum               = controller->errorSumBeforeWindUp;
+        signals.controlSignalErrorSumAfterWindup    = controller->errorSum;
+        signals.controlSignalProportionalOutput     = controller->Kp * controller->errorSignal;
+        signals.controlSignalIntegralOutput         = controller->Ki * controller->errorSum;
+        signals.controlSignalFeedDorwardOutput      = controller->feedForward;
+        signals.controlSingalControl                = controller->controlSignal;
+    }
+    else
+    {   // Invalid controller given
+#ifdef _DD_
+        SET_ALARM_WITH_2_U32_DATA( ALARM_ID_DD_SOFTWARE_FAULT, SW_FAULT_ID_PI_CTRL_INVALID_CONTROLLER, (U32)controllerID )
+#endif
+    }
+
+    return signals;
+}
+
+/*********************************************************************//**
+ * @brief
  * The setPIControllerStepLimit function sets the step limit value.
  * @details \b Inputs: none
  * @details \b Outputs: maxErrorSumStep of controller ID
Index: PIControllers.h
===================================================================
diff -u -r5b4db16e34780cbbe85fbc3b994acbe0e68108e8 -r742ee2add33924e4b6750bc88622f09e0791feb4
--- PIControllers.h	(.../PIControllers.h)	(revision 5b4db16e34780cbbe85fbc3b994acbe0e68108e8)
+++ PIControllers.h	(.../PIControllers.h)	(revision 742ee2add33924e4b6750bc88622f09e0791feb4)
@@ -51,6 +51,8 @@
     PI_CONTROLLER_ID_RO_PUMP_PRES,                  ///< RO pump controller to maximum pressure
     PI_CONTROLLER_ID_BOOST_PUMP_FLOW,               ///< Boost pump controller to flow
     PI_CONTROLLER_ID_BOOST_PUMP_PRES,               ///< Boost pump controller to maximum pressure
+    PI_CONTROLLER_ID_BICARB_VOL,                    ///< Bicarb dose volume
+    PI_CONTROLLER_ID_ACID_VOL,                      ///< Acid dose volume
 #endif
     NUM_OF_PI_CONTROLLERS_IDS                       ///< Number of PI controllers
 } PI_CONTROLLER_ID_T;
@@ -70,6 +72,20 @@
     NUM_OF_CONTROLLER_SIGNAL                        ///< Number of PI controller signals
 } PI_CONTROLLER_SIGNALS_ID;
 
+/// Data structure for debugging PI controller signals.
+typedef struct DebugControllerSignals
+{
+    F32 controlSignalReference;                     ///< Reference value
+    F32 controlSignalMeasured;                      ///< Measured value
+    F32 controlSignalError;                         ///< Error value
+    F32 controlSignalErrorSum;                      ///< Error sum before anti-windup
+    F32 controlSignalErrorSumAfterWindup;           ///< Error sum after anti-windup
+    F32 controlSignalProportionalOutput;            ///< P portion of controller output signal
+    F32 controlSignalIntegralOutput;                ///< I portion of controller output signal
+    F32 controlSignalFeedDorwardOutput;             ///< Feed forward portion of controller output signal
+    F32 controlSingalControl;                       ///< Controller output signal
+ } PI_CONTROLLER_SIGNALS_DATA;
+
 /// Data structure for PI control profiles.
 typedef struct
 {
@@ -91,6 +107,7 @@
 F32 getPIControllerSignals( PI_CONTROLLER_ID_T controllerID, PI_CONTROLLER_SIGNALS_ID signalID );
 void setPIControllerStepLimit( PI_CONTROLLER_ID_T controllerID, F32 stepLimit );
 void setPIControllerFeedForward( PI_CONTROLLER_ID_T controllerID, F32 feedforward );
+PI_CONTROLLER_SIGNALS_DATA getDebugPIControllerSignals( PI_CONTROLLER_ID_T controllerID );
 
 /**@}*/