--- a/graphics/FBD_Objects.py	Wed Mar 07 10:06:01 2012 +0100
+++ b/graphics/FBD_Objects.py	Sun Mar 18 15:35:07 2012 +0100
@@ -35,6 +35,9 @@
 Class that implements the graphic representation of a function block
 """
 
+def TestConnectorName(name, block_type):
+    return name in ["OUT", "MN", "MX"] or name.startswith("IN") and (block_type, name) != ("EXPT", "IN2")
+
 class FBD_Block(Graphic_Element):
     
     # Create a new block
@@ -178,26 +181,21 @@
             output.SetValue(values.get(ouput.getName(), None))
     
     def GetConnectionResultType(self, connector, connectortype):
+        if not TestConnectorName(connector.GetName(), self.Type):
+            return connectortype
         resulttype = connectortype
-        undefined = True
         for input in self.Inputs:
-            name = input.GetName()
-            undefined = undefined and input.GetType(True) == "ANY"
-            if input != connector and (name.startswith("IN") or name in ["MN", "MX"]):
+            if input != connector and TestConnectorName(input.GetName(), self.Type):
                 inputtype = input.GetConnectedType()
                 if resulttype is None or inputtype is not None and self.IsOfType(inputtype, resulttype):
                     resulttype = inputtype
         for output in self.Outputs:
-            name = output.GetName()
-            undefined = undefined and output.GetType(True) == "ANY"
-            if output != connector and name == "OUT" and not self.IsEndType(output.GetType()):
+            if output != connector and TestConnectorName(output.GetName(), self.Type):
                 outputtype = output.GetConnectedType()
                 if resulttype is None or outputtype is not None and self.IsOfType(outputtype, resulttype):
                     resulttype = outputtype
-        if not undefined:
-            return resulttype
-        return "ANY"
-    
+        return resulttype
+        
     # Returns all the block connectors
     def GetConnectors(self):
         return {"inputs" : self.Inputs, "outputs" : self.Outputs}