Linked all tank sensors in media cabinet

- Additional fixes for the hmi

PLC/01_Stationen/MediaStation/POUs/FB_Tank.TcPOU

@@ -21,20 +21,31 @@ VAR
 	i_xFull AT %I* : BOOL;
 	i_xEmpty AT %I* : BOOL;
 	
-	fbFillingValve : FB_Valve;
-	fbDrainValve : FB_Valve;
-	fbPumpValve : FB_Valve;
+	_fbWaterValve : FB_Valve('Water valve');
+	_fbFillingValve : FB_Valve('Filling valve');
+	_fbDrainValve : FB_Valve('Drain Valve');
+	_fbPumpValve : FB_Valve('Pump Valve');
 	
 	_stValveConfig : ST_ValveConfig;
 	
 	_wFillingValveSafetyIntlkUsed : T_INTERLOCK;
 	_wFillingValveSafetyIntlk : T_INTERLOCK;
+	
+	_iState : INT;
+	
+	_xFirstCycle : BOOL := TRUE;
 END_VAR
 ]]></Declaration>
     <Implementation>
-      <ST><![CDATA[// Overfull is NC so true if ok
+      <ST><![CDATA[IF _xFirstCycle THEN
+	_xFirstCycle := FALSE;
+	stHMIInterface.stFillingValve.stInterlock.asSafetyINTLKName[0] := 'Tank overfull';
+	_wFillingValveSafetyIntlkUsed.0 := 1;
+END_IF
+
+// Overfull is NC so true if ok
 _wFillingValveSafetyIntlk.0 := i_xOverfull;
-fbFillingValve(
+_fbFillingValve(
 	xReleaseErrors:= xReleaseErrors, 
 	stValveConfig:= _stValveConfig, 
 	xReleaseManualMode:= xReleaseManualMode, 
@@ -42,20 +53,60 @@ fbFillingValve(
 	wSafetyINTLKUsed:= _wFillingValveSafetyIntlkUsed, 
 	xConfirmAlarms:= xConfirmAlarms, 
 	stHMIInterface:= stHMIInterface.stFillingValve);
+	
+_fbWaterValve(
+	xReleaseErrors:= xReleaseErrors, 
+	stValveConfig:= _stValveConfig, 
+	xReleaseManualMode:= xReleaseManualMode, 
+	xConfirmAlarms:= xConfirmAlarms, 
+	stHMIInterface:= stHMIInterface.stDrainValve);
 
-fbDrainValve(
+_fbDrainValve(
 	xReleaseErrors:= xReleaseErrors, 
 	stValveConfig:= _stValveConfig, 
 	xReleaseManualMode:= xReleaseManualMode, 
 	xConfirmAlarms:= xConfirmAlarms, 
 	stHMIInterface:= stHMIInterface.stDrainValve);
 	
-fbPumpValve(
+_fbPumpValve(
 	xReleaseErrors:= xReleaseErrors, 
 	stValveConfig:= _stValveConfig, 
 	xReleaseManualMode:= xReleaseManualMode, 
 	xConfirmAlarms:= xConfirmAlarms, 
-	stHMIInterface:= stHMIInterface.stPumpValve);]]></ST>
+	stHMIInterface:= stHMIInterface.stPumpValve);
+	
+CASE _iState OF
+	// Idle
+	0:
+		// Start emptying tank
+		IF stHMIInterface.stEmptyButton.xRequest THEN
+			stHMIInterface.stEmptyButton.xRequest := FALSE;
+			_iState := 10;
+		END_IF
+		
+		// Start filling tank with water
+		IF stHMIInterface.stFillButton.xRequest THEN
+			stHMIInterface.stFillButton.xRequest := FALSE;
+			_iState := 20;
+		END_IF
+		
+	// Empty tank
+	10:
+		_fbDrainValve.xAutomaticOpen := TRUE;
+		
+		IF (NOT i_xEmpty) THEN
+			_fbDrainValve.xAutomaticOpen := FALSE;
+			
+			_iState := 0;
+		END_IF
+		
+	// Fill tank with water
+	20:
+		
+		IF xFull THEN
+			;
+		END_IF
+END_CASE]]></ST>
     </Implementation>
     <Method Name="FB_Init" Id="{9c6d1842-9c2e-4437-b40f-941f77668ffe}">
       <Declaration><![CDATA[//FB_Init is always available implicitly and it is used primarily for initialization.
@@ -70,10 +121,7 @@ END_VAR
 ]]></Declaration>
       <Implementation>
         <ST><![CDATA[_stValveConfig.xHasOpenFeedback := FALSE;
-_stValveConfig.xHasClosedFeedback := FALSE;
-
-stHMIInterface.stFillingValve.stInterlock.asSafetyINTLKName[0] := 'Tank overfull';
-_wFillingValveSafetyIntlkUsed.0 := 1;]]></ST>
+_stValveConfig.xHasClosedFeedback := FALSE;]]></ST>
       </Implementation>
     </Method>
     <Method Name="M_HandleHMIOutput" Id="{8939e00b-3459-4b5e-a4b3-7b489eec260a}">