changes during start of safety check

- Refactoring of string fb
- Added pump safety interlocks for pressure segment inlet too low and too high

PLC/POUs/Sunspec/FB_PowerSupplyKaco.TcPOU

@@ -109,6 +109,9 @@ VAR
 	// Current state of the inverters internal statemachine
 	_uiInverterState : UINT;
 	
+	// Polling in enable state
+	_xEnableInternal : BOOL;
+	
 	// Inverter name for alarm message
 	_sName : STRING;
 END_VAR
@@ -595,7 +598,7 @@ CASE _iState OF
 				END_IF
 			ELSE
 				// No error and not enabled
-				IF (NOT xEnable) THEN
+				IF (NOT _xEnableInternal) THEN
 					// Goto polling state
 					_iState := 110;
 				ELSE
@@ -843,6 +846,7 @@ CASE _iState OF
 	1000: // Error state
 		xActive := FALSE;
 		xError := TRUE;
+		_xEnableInternal := TRUE;
 		_iState := 1001;
 		
 	1001: // Error state, wait for reset