diff --git a/script/local.py b/script/local.py
index fb0d142..ef7515a 100644
--- a/script/local.py
+++ b/script/local.py
@@ -125,3 +125,127 @@ class TestingTool:
         ret = [self.testPath, self.deviceName, returnString, testPassed]
         set_return( ret)
 
+        
+
+# RPS-Test Classes
+class Interlock:
+    """
+    class for getting - setting interlock mode
+    """
+    import binascii
+    from array import *
+    # mode, test pattern for outputs 2-4, test pattern for output 5, expected pattern for 2-4, expected pattern for 5
+    rps_mask1 = 0x4440  # mask for outputs 2-4
+    rps_mask2 = 0x0004  # mask for output 5
+    msg_default = bytearray()
+
+    def __init__(self):
+        """
+        Message composition at position:
+        0:     0x32 =  50 = byte count
+        2:     0x69 = 105 = transfer function
+        4,5:   0x99,0x88  = this applications port number (swapped)
+        7:     1 = message id
+        16:    io-func: reset=2; read mode=0; write mode=1
+        """
+        self.msg_default = array('B',[0x32,0,0x69,0,0x99,0x88,1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0])
+    
+    def _msgRead():
+        self.msg_default[16] = 0
+        return self.msg_default
+
+    def _msgWrite():
+        self.msg_default[16] = 1
+        return self.msg_default
+
+    def _msgReset():
+        self.msg_default[16] = 2
+        return self.msg_default
+
+    def setInterlockMode(self, mode):
+        udp = UDPDatagram()
+        msg = self._msgWrite()
+        modebytes = array('B', mode)
+        msg.extend(modebytes)
+        #print binascii.hexlify(msg)  
+        if udp.send(msg) == null:
+            return false
+        else:
+            return true
+
+    def getInterlockMode(self):
+        udp = UDPDatagram()
+        msg = self._msgRead()
+        #print binascii.hexlify(msg)  
+        rcv = udp.send(msg)
+        #print binascii.hexlify(rcv)  
+        return rcv
+
+    def masterReset(self):
+        udp = UDPDatagram()
+        msg = self._msgReset()
+        #print binascii.hexlify(msg)  
+        if udp.send(msg) == null:
+            return false
+        else:
+            return true
+
+class UDPDatagram:
+    """
+    class for receiving and sending a udp message
+    """
+    import socket
+
+    # the constructor
+    def __init__(self):
+        # communication with interlock server
+        self.serverPort = 0xBB1B   # interlock server
+        self.serverName = 'PROMC1' # ball server
+        try:
+            print 'here the socket should be open'            
+            #self.sock = socket.socket(socket.AF_INET,  # Internet
+                             socket.SOCK_DGRAM)  # UDP
+        #except socket.error, msg:
+        except msg:
+            print 'Failed to create socket. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
+            sys.exit()
+
+    def _sendUDP(self, message):
+        try:
+            # get the ip address and send
+            print 'here should sendto:', self.serverName, self.serverPort
+            print 'message: ', message
+            #self.sock.sendto(message, (self.serverName, self.serverPort))
+        #except socket.error, msg:
+        except msg:
+            print 'Failed to create socket. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
+            sys.exit()
+
+    def _listenInit(self):
+        try:
+            'here should bind to socket'
+            #self.sock.bind('', self.ThisPort)
+        #except socket.error, msg:
+        except msg:
+            print 'Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1]
+            sys.exit()
+        print 'Socket bind complete. '
+
+    def _listen(self):
+        # now keep talking with the client
+        while 1:
+            # receive data from client (data, addr)
+            print 'here should receive data'
+            #data, addr = self.sock.recvfrom(1024)
+            if not data:
+                print 'End of data or no data'
+                break
+            print 'Message[' + addr[0] + ':' + str(addr[1]) + '] - ' + data.strip()
+            
+        #self.sock.close()
+        return data[28:]
+
+    def send(self, message):
+        self._listenInit()
+        self._sendUDP(message)
+        return self._listen()        
\ No newline at end of file
diff --git a/script/tests/tests.properties b/script/tests/tests.properties
index a96b42b..b2fdc28 100644
--- a/script/tests/tests.properties
+++ b/script/tests/tests.properties
@@ -1,5 +1,5 @@
 #TestingList for pshell: configuration properties
-#Tue Oct 17 14:44:47 CEST 2017
+#Tue Oct 17 14:46:39 CEST 2017
 customPanel=
 showEnabledTestsOnly=true
 listFilter=rps-test
diff --git a/script/tests/tests/RPS Tests Betriebsmode/Betriebsmode/Betriebsmode.py b/script/tests/tests/RPS Tests Betriebsmode/Betriebsmode/Betriebsmode.py
index 7c3daf1..b560491 100644
--- a/script/tests/tests/RPS Tests Betriebsmode/Betriebsmode/Betriebsmode.py	
+++ b/script/tests/tests/RPS Tests Betriebsmode/Betriebsmode/Betriebsmode.py	
@@ -14,7 +14,6 @@ def startTest(testName, DEVICE, params):
     # by default, assume the test failed:
     ret = 'Test failed'
     status = False
-    test = TestingTool()
     # put the whole custom code under try/catch.
     try:
         # get the path of this script:
@@ -85,9 +84,7 @@ def startTest(testName, DEVICE, params):
 
         # now try with data from real device: this part will most probably fail: correct the PV names with existing ones.
         try:
-            ilk = Interlock()
-            ilk.masterReset()
-            ilk.setInterlockMode(mode)
+
             # set up connection to channels. "type" of data can be "d" (= double), "l" (= long).
             rpsChannel = Channel(channel  , type='d')
         except: