Added possibility to charge with cv

PLC/POUs/Utility/Controller/FB_Limit.TcPOU

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TcPlcObject Version="1.1.0.1" ProductVersion="3.1.4026.12">
+  <POU Name="FB_Limit" Id="{d4518907-6b63-4dbf-8339-7e925234f00a}" SpecialFunc="None">
+    <Declaration><![CDATA[FUNCTION_BLOCK FB_Limit
+VAR_INPUT
+	rIn : REAL;
+	rMin : REAL;
+	rMax : REAL;
+END_VAR
+VAR_OUTPUT
+	rOut : REAL;
+	xClamped : BOOL;
+END_VAR
+VAR
+END_VAR
+]]></Declaration>
+    <Implementation>
+      <ST><![CDATA[IF rIn > rMax THEN
+	rOut := rMax;
+	xClamped := TRUE;
+ELSIF rIn < rMin THEN
+	rOut := rMin;
+	xClamped := TRUE;
+ELSE
+	rOut := rIn;
+	xClamped := FALSE;
+END_IF]]></ST>
+    </Implementation>
+  </POU>
+</TcPlcObject>