diff --git a/bau_systemB.cpp b/bau_systemB.cpp
index 39cdb70..77d369c 100644
--- a/bau_systemB.cpp
+++ b/bau_systemB.cpp
@@ -92,6 +92,11 @@ void BauSystemB::readMemory()
     _memory.readMemory();
 }
 
+void BauSystemB::writeMemory()
+{
+    _memory.writeMemory();
+}
+
 DeviceObject& BauSystemB::deviceObject()
 {
     return _deviceObj;
diff --git a/bau_systemB.h b/bau_systemB.h
index a3e430f..5d3f048 100644
--- a/bau_systemB.h
+++ b/bau_systemB.h
@@ -25,6 +25,7 @@ public:
     bool enabled();
     void enabled(bool value);
     void readMemory();
+    void writeMemory();
     void addSaveRestore(SaveRestore* obj);
 protected:
     virtual DataLinkLayer& dataLinkLayer() = 0;
diff --git a/bits.cpp b/bits.cpp
index 774a48b..0c867ec 100644
--- a/bits.cpp
+++ b/bits.cpp
@@ -251,15 +251,4 @@ void println(void)
     printf("\n");
 }
 
-#endif
-
-void printHex(const char* suffix, const uint8_t *data, size_t length)
-{
-    _print(suffix);
-    for (size_t i = 0; i < length; i++) {
-        if (data[i] < 0x10) { _print("0"); }
-        _print(data[i], HEX);
-        _print(" ");
-    }
-    _print("\n");
-}
\ No newline at end of file
+#endif
\ No newline at end of file
diff --git a/group_object.cpp b/group_object.cpp
index 3cff9eb..ba6a6ec 100644
--- a/group_object.cpp
+++ b/group_object.cpp
@@ -142,7 +142,7 @@ void GroupObject::commFlag(ComFlag value)
     _commFlag = value;
 }
 
-int32_t GroupObject::objectReadFloat()
+int32_t GroupObject::objectReadFloatDpt9()
 {
     uint16_t dptValue = getWord(_data);
     return dptFromFloat(dptValue);
@@ -164,7 +164,7 @@ void GroupObject::objectWritten()
 }
 
 
-void GroupObject::objectWriteFloat(int32_t value)
+void GroupObject::objectWriteFloatDpt9(int32_t value)
 {
     uint16_t dptValue = dptToFloat(value);
     pushWord(dptValue, _data);
@@ -172,7 +172,7 @@ void GroupObject::objectWriteFloat(int32_t value)
 }
 
 
-void GroupObject::objectUpdateFloat(int32_t value)
+void GroupObject::objectUpdateFloatDpt9(int32_t value)
 {
     uint16_t dptValue = dptToFloat(value);
     pushWord(dptValue, _data);
@@ -189,3 +189,55 @@ size_t GroupObject::sizeInTelegram()
     uint8_t code = lowByte(ntohs(_table->_tableData[_asap]));
     return asapValueSize(code);
 }
+
+
+void GroupObject::objectWrite(bool value)
+{
+    objectWrite((uint8_t)value);
+}
+
+
+void GroupObject::objectWrite(uint8_t value)
+{
+    pushByte(value, _data);
+    objectWritten();
+}
+
+
+void GroupObject::objectWrite(uint16_t value)
+{
+    pushWord(value, _data);
+    objectWritten();
+}
+
+
+void GroupObject::objectWrite(uint32_t value)
+{
+    pushInt(value, _data);
+    objectWritten();
+}
+
+
+void GroupObject::objectWrite(int8_t value)
+{
+    objectWrite((uint8_t)value);
+}
+
+
+void GroupObject::objectWrite(int16_t value)
+{
+    objectWrite((uint16_t)value);
+}
+
+
+void GroupObject::objectWrite(int32_t value)
+{
+    objectWrite((uint32_t)value);
+}
+
+
+void GroupObject::objectWrite(float value)
+{
+    uint32_t tmp = value * 100;
+    objectWriteFloatDpt9(tmp);
+}
diff --git a/group_object.h b/group_object.h
index 1f35b75..87248d2 100644
--- a/group_object.h
+++ b/group_object.h
@@ -45,7 +45,7 @@ public:
     * @return The value of the com-object in 1/100. INVALID_DPT_FLOAT is returned
     *         for the DPT9 "invalid data" value.
     */
-    int32_t objectReadFloat();
+    int32_t objectReadFloatDpt9();
     bool objectReadBool();
     /**
     * Request the read of a communication object. Calling this function triggers the
@@ -79,7 +79,15 @@ public:
     * @param value - the new value of the communication object in 1/100.
     *                Use INVALID_DPT_FLOAT for the DPT9 "invalid data" value.
     */
-    void objectWriteFloat(int32_t value);
+    void objectWriteFloatDpt9(int32_t value);
+    void objectWrite(bool value);
+    void objectWrite(uint8_t value);
+    void objectWrite(uint16_t value);
+    void objectWrite(uint32_t value);
+    void objectWrite(int8_t value);
+    void objectWrite(int16_t value);
+    void objectWrite(int32_t value);
+    void objectWrite(float value);
 
     /**
     * Set the value of a communication object and mark the communication object
@@ -93,7 +101,7 @@ public:
     * @param value - the new value of the communication object in 1/100.
     *                Use INVALID_DPT_FLOAT for the DPT9 "invalid data" value.
     */
-    void objectUpdateFloat(int32_t value);
+    void objectUpdateFloatDpt9(int32_t value);
 
     size_t valueSize();
     size_t asapValueSize(uint8_t code);
diff --git a/ip_data_link_layer.cpp b/ip_data_link_layer.cpp
index f5a261c..4d42c3b 100644
--- a/ip_data_link_layer.cpp
+++ b/ip_data_link_layer.cpp
@@ -72,6 +72,8 @@ void IpDataLinkLayer::loop()
 
 void IpDataLinkLayer::enabled(bool value)
 {
+    _print("own address: ");
+    _println(_deviceObject.induvidualAddress());
     if (value && !_enabled)
     {
         _platform.setupMultiCast(_ipParameters.multicastAddress(), KNXIP_MULTICAST_PORT);
diff --git a/memory.cpp b/memory.cpp
index b7fb96d..975ecc0 100644
--- a/memory.cpp
+++ b/memory.cpp
@@ -18,7 +18,7 @@ void Memory::readMemory()
 {
     _data = _platform.getEepromBuffer(512);
 
-    if (_data[0] != 0xDE || _data[1] != 0xAD || _data[2] != 0xAF || _data[3] != 0xFE)
+    if (_data[0] != 0x00 || _data[1] != 0xAD || _data[2] != 0xAF || _data[3] != 0xFE)
         return;
 
     uint8_t* buffer = _data + 4;
@@ -31,7 +31,7 @@ void Memory::readMemory()
 
 void Memory::writeMemory()
 {
-    _data[0] = 0xDE;
+    _data[0] = 0x00;
     _data[1] = 0xAD;
     _data[2] = 0xAF;
     _data[3] = 0xFE;
diff --git a/table_object.cpp b/table_object.cpp
index 8b25fee..eaa014f 100644
--- a/table_object.cpp
+++ b/table_object.cpp
@@ -123,6 +123,9 @@ bool TableObject::allocTable(uint32_t size, bool doFill, uint8_t fillByte)
         _size = 0;
     }
 
+    if (size == 0)
+        return true;
+    
     _data = (uint8_t*)malloc(size);
     if (!_data)
         return false;