diff --git a/drv/b15f.cpp b/drv/b15f.cpp
index 2071a06..c03d0ff 100644
--- a/drv/b15f.cpp
+++ b/drv/b15f.cpp
@@ -48,16 +48,41 @@ void B15F::init()
 	
 	while(1)
 	{
-		for(uint16_t i = 0; i < 1024; )
+		digitaleAusgabe0(0xFF);
+		digitaleAusgabe0(0x00);
+		//analogeEingabe(0);
+		/*for(uint16_t i = 0; i < 1024; )
 		{
 			i = analogeEingabe(0);
 			analogeAusgabe0(i);
 			delay(0);
-		}
+		}*/
 	}
 	
 }
 
+void B15F::reconnect()
+{
+	std::cout << PRE << "Verbindung unterbrochen, stelle Verbindung neu her: " << std::flush;
+		
+	uint8_t tries = RECONNECT_TRIES;		
+	while(tries--)
+	{
+		delay(RECONNECT_TIMEOUT);
+		
+		discard();
+		
+		if(testConnection())
+		{
+			std::cout << "OK" << std::endl << std::flush;
+			return;
+		}
+			
+	}
+	
+	throw DriverException("Verbindung kann nicht repariert werden");
+}
+
 void B15F::discard(void)
 {
 	for(uint8_t i = 0; i < 8; i++)
@@ -99,57 +124,113 @@ bool B15F::testIntConv()
 
 bool B15F::digitaleAusgabe0(uint8_t port)
 {
-	writeByte(RQ_BA0);
-	writeByte(port);
-	
-	uint8_t aw = readByte();	
-	return aw == MSG_OK;
+	try
+	{
+		writeByte(RQ_BA0);
+		writeByte(port);
+		
+		uint8_t aw = readByte();	
+		return aw == MSG_OK;
+	}
+	catch(DriverException& de)
+	{
+		reconnect();
+		return digitaleAusgabe0(port);
+	}
 }
 
 bool B15F::digitaleAusgabe1(uint8_t port)
 {
-	writeByte(RQ_BA1);
-	writeByte(port);
-	
-	uint8_t aw = readByte();	
-	return aw == MSG_OK;
+	try
+	{
+		writeByte(RQ_BA1);
+		writeByte(port);
+		
+		uint8_t aw = readByte();	
+		return aw == MSG_OK;
+	}
+	catch(DriverException& de)
+	{
+		reconnect();
+		return digitaleAusgabe1(port);
+	}
 }
 
 uint8_t B15F::digitaleEingabe0()
 {
-	writeByte(RQ_BE0);
-	return readByte();
+	try
+	{
+		writeByte(RQ_BE0);
+		return readByte();
+	}
+	catch(DriverException& de)
+	{
+		reconnect();
+		return digitaleEingabe0();
+	}
 }
 
 uint8_t B15F::digitaleEingabe1()
 {
-	writeByte(RQ_BE1);
-	return readByte();
+	try
+	{
+		writeByte(RQ_BE1);
+		return readByte();
+	}
+	catch(DriverException& de)
+	{
+		reconnect();
+		return digitaleEingabe1();
+	}
 }
 
 bool B15F::analogeAusgabe0(uint16_t value)
 {
-	writeByte(RQ_AA0);
-	writeInt(value);
-	
-	uint8_t aw = readByte();	
-	return aw == MSG_OK;
+	try
+	{
+		writeByte(RQ_AA0);
+		writeInt(value);
+		
+		uint8_t aw = readByte();	
+		return aw == MSG_OK;
+	}
+	catch(DriverException& de)
+	{
+		reconnect();
+		return analogeAusgabe0(value);
+	}
 }
 
 bool B15F::analogeAusgabe1(uint16_t value)
 {
-	writeByte(RQ_AA1);
-	writeInt(value);
-	
-	uint8_t aw = readByte();	
-	return aw == MSG_OK;
+	try
+	{
+		writeByte(RQ_AA1);
+		writeInt(value);
+		
+		uint8_t aw = readByte();	
+		return aw == MSG_OK;
+	}
+	catch(DriverException& de)
+	{
+		reconnect();
+		return analogeAusgabe1(value);
+	}
 }
 
 uint16_t B15F::analogeEingabe(uint8_t channel)
 {
-	writeByte(RQ_ADC);
-	writeByte(channel);
-	return readInt();
+	try
+	{
+		writeByte(RQ_ADC);
+		writeByte(channel);
+		return readInt();
+	}
+	catch(DriverException& de)
+	{
+		reconnect();
+		return analogeEingabe(channel);
+	}
 }
 
 
diff --git a/drv/b15f.h b/drv/b15f.h
index cac39ff..0ed4d28 100644
--- a/drv/b15f.h
+++ b/drv/b15f.h
@@ -21,6 +21,7 @@ private:
 public:
 	// Grundfunktionen
 	void init(void);
+	void reconnect(void);
 	void discard(void);
 	bool testConnection(void);
 	bool testIntConv(void);
@@ -57,6 +58,8 @@ private:
 	const std::string SERIAL_DEVICE = "/dev/ttyUSB0";
 	constexpr static uint8_t MSG_OK = 0xFF;
 	constexpr static uint8_t MSG_FAIL = 0xFE;
+	constexpr static uint16_t RECONNECT_TIMEOUT = 32; // ms
+	constexpr static uint8_t RECONNECT_TRIES = 3;
 	
 	// REQUESTS
 	constexpr static uint8_t RQ_DISC = 0;
diff --git a/drv/b15f.o b/drv/b15f.o
index 3e4a43e..3173d0b 100644
Binary files a/drv/b15f.o and b/drv/b15f.o differ
diff --git a/main b/main
index 275fed1..880bff8 100755
Binary files a/main and b/main differ