diff --git a/Core/Application/VARH_VariableHandler.c b/Core/Application/VARH_VariableHandler.c
index c9d6f21..e54aa3b 100644
--- a/Core/Application/VARH_VariableHandler.c
+++ b/Core/Application/VARH_VariableHandler.c
@@ -70,28 +70,31 @@ LOCAL osMutexId_t         m_pstMutexID    = NULL;
 // Description:   Definition of local constants (visible by this module only).
 //=================================================================================================
 
-/* 
-Modes:
-- Const_Temp -> Default
-- Const_Voltage
- */
-
 LOCAL CONST VARH_StVarInfo m_astVarInfo[VARH_eNumberOfVariables] =
 { 
-  { VARH_FLAGINFO_NONE, (VARH_UVariable)0, (VARH_UVariable)0, (VARH_UVariable)1} // VARH_eMode
+  { VARH_FLAGINFO_NONE, (VARH_UVariable)1, (VARH_UVariable)0, (VARH_UVariable)1}, // VARH_eMode
 
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-60.0f, (VARH_UVariable)100.0f }, // VARH_eTemp_H,
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-60.0f, (VARH_UVariable)100.0f }, // VARH_eTemp_C,
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-50.0f, (VARH_UVariable)70.0f }, // VARH_eTemp_Diff,
+  { VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-2.0f, (VARH_UVariable)12.0f}, // VARH_eControlVoltage
 
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-5.0f, (VARH_UVariable)14.0f }, // VARH_ePeltier_U,
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-10.0f, (VARH_UVariable)10.0f }, // VARH_ePeltier_I,
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)0.0f, (VARH_UVariable)5.0f }, // VARH_ePeltier_R,
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-50.0f, (VARH_UVariable)150.0f }, // VARH_ePeltier_P,
+  { VARH_FLAGINFO_FLASH | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)0.0f, (VARH_UVariable)100.0f }, // VARH_ePID_kp
+  { VARH_FLAGINFO_FLASH | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)0.0f, (VARH_UVariable)100.0f }, // VARH_ePID_ki
+  { VARH_FLAGINFO_FLASH | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)0.0f, (VARH_UVariable)100.0f }, // VARH_ePID_kd
+  { VARH_FLAGINFO_FLOAT, (VARH_UVariable)23.0f, (VARH_UVariable)-40.0f, (VARH_UVariable)50.0f }, // VARH_ePID_Temp
+  { VARH_FLAGINFO_FLASH | VARH_FLAGINFO_FLOAT, (VARH_UVariable)10.0f, (VARH_UVariable)0.0f, (VARH_UVariable)12.0f }, // VARH_ePID_Max
+  { VARH_FLAGINFO_FLASH | VARH_FLAGINFO_FLOAT, (VARH_UVariable)-2.0f, (VARH_UVariable)-2.0f, (VARH_UVariable)0.0f }, // VARH_ePID_Min
 
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)20.0f, (VARH_UVariable)30.0f }, // VARH_eSupply_U,
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)0.0f, (VARH_UVariable)5.0f }, // VARH_eSupply_I,
-  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)0.0f, (VARH_UVariable)150.0f }, // VARH_eSupply_P,
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-60.0f, (VARH_UVariable)100.0f }, // VARH_eTemp_H
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-60.0f, (VARH_UVariable)100.0f }, // VARH_eTemp_C
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-50.0f, (VARH_UVariable)70.0f }, // VARH_eTemp_Diff
+
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-5.0f, (VARH_UVariable)14.0f }, // VARH_ePeltier_U
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-10.0f, (VARH_UVariable)10.0f }, // VARH_ePeltier_I
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)0.0f, (VARH_UVariable)5.0f }, // VARH_ePeltier_R
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)-50.0f, (VARH_UVariable)150.0f }, // VARH_ePeltier_P
+
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)20.0f, (VARH_UVariable)30.0f }, // VARH_eSupply_U
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)0.0f, (VARH_UVariable)5.0f }, // VARH_eSupply_I
+  { VARH_FLAGINFO_READONLY | VARH_FLAGINFO_FLOAT, (VARH_UVariable)0.0f, (VARH_UVariable)0.0f, (VARH_UVariable)150.0f }, // VARH_eSupply_P
 };
 
 LOCAL CONST osMutexAttr_t m_stMutexAttr =
diff --git a/Core/Application/VARH_VariableHandler.h b/Core/Application/VARH_VariableHandler.h
index fb2c06f..99fe2aa 100644
--- a/Core/Application/VARH_VariableHandler.h
+++ b/Core/Application/VARH_VariableHandler.h
@@ -67,6 +67,15 @@ typedef enum
 { 
   VARH_eMode,
 
+  VARH_eControlVoltage,
+
+  VARH_ePID_kp,
+  VARH_ePID_ki,
+  VARH_ePID_ki,
+  VARH_ePID_Temp,
+  VARH_ePID_Max,
+  VARH_ePID_Min,
+
 	VARH_eTemp_H,
   VARH_eTemp_C,
   VARH_eTemp_Diff,
diff --git a/Core/Drivers/PECO_PeltierController.c b/Core/Drivers/PECO_PeltierController.c
index 02d4799..dc2d0fe 100644
--- a/Core/Drivers/PECO_PeltierController.c
+++ b/Core/Drivers/PECO_PeltierController.c
@@ -33,9 +33,12 @@
 #include "../PDEF_ProjectDefinitions.h"
 #include "PECO_PeltierController.h"
 
+//Application
+#include "../Application/VARH_VariableHandler.h"
+
 // Driver
-#include "../Drivers/ANPO_AnalogPortsOut.h"
-#include "../Drivers/DIPO_DigitalPorts.h"
+#include "ANPO_AnalogPortsOut.h"
+#include "DIPO_DigitalPorts.h"
 
 // Toolbox
 #include "../Toolbox/UTIL_Utility.h"
@@ -235,8 +238,13 @@ VOID PECO_vTask( PVOID arg )
     if( u32Flags & EVENT_TIMER_UPDATE )
     {
 
-
-
+      if (VARH_uGetVariableData(VARH_eMode) == PECO_eConstTemp)
+      {
+        // PID Regelung
+      } else if (VARH_uGetVariableData(VARH_eMode) == PECO_eConstVoltage)
+      {
+        boSetPeltierVoltage(VARH_uGetVariableData(VARH_eControlVoltage))
+      }
 
     }
 
@@ -251,13 +259,13 @@ VOID PECO_vTask( PVOID arg )
 // Parameters:    S8 Voltage (12V - -3V)
 // Returns:       Boolean TRUE if successful
 //-------------------------------------------------------------------------------------------------
-BOOL boSetPeltierVoltage( S16 Voltage ){
+BOOL boSetPeltierVoltage( FLOAT Voltage ){
 	BOOL boOK = TRUE;
 
-	if( Voltage > 14000 ) Voltage = 12000;
-	if( Voltage < -8000 ) Voltage = -3000;
+	if( Voltage > 12 ) Voltage = 12;
+	if( Voltage < -3 ) Voltage = -3;
 	
-	ANPO_boSetVoltage( ((((FLOAT)Voltage)/1000) + 20.088) / 34.103 );
+	ANPO_boSetVoltage( (((FLOAT)Voltage) + 20.088) / 34.103 );
 
 	return( boOK );
 }