diff -r 34eff05909b0 -r 351d134babd7 plcopen/structures.py
--- a/plcopen/structures.py	Fri Sep 12 16:23:40 2008 +0200
+++ b/plcopen/structures.py	Mon Sep 15 13:37:03 2008 +0200
@@ -44,24 +44,39 @@
     executionOrderId = block.getexecutionOrderId()
     block_infos = generator.GetBlockType(type)
     if block_infos["type"] == "function":
-        output_variable = block.outputVariables.getvariable()[0]
-        output_name = "%s%d_OUT"%(type, block.getlocalId())
-        output_info = (generator.TagName, "block", block.getlocalId(), "output", 0)
+        output_variables = block.outputVariables.getvariable()
         if not generator.ComputedBlocks.get(block, False) and not order:
             generator.ComputedBlocks[block] = True
-            if generator.Interface[-1][0] != "VAR" or generator.Interface[-1][1] or generator.Interface[-1][2] or generator.Interface[-1][3]:
-                generator.Interface.append(("VAR", False, False, False, []))
-            if output_variable.connectionPointOut in generator.ConnectionTypes:
-                generator.Interface[-1][4].append((generator.ConnectionTypes[output_variable.connectionPointOut], output_name, None, None))
-            else:
-                generator.Interface[-1][4].append(("ANY", output_name, None, None))
             vars = []
             for i, variable in enumerate(block.inputVariables.getvariable()):
                 input_info = (generator.TagName, "block", block.getlocalId(), "input", i)
                 connections = variable.connectionPointIn.getconnections()
                 if connections is not None:
                     value = generator.ComputeExpression(body, connections, executionOrderId > 0)
-                    vars.append(generator.ExtractModifier(variable, value, input_info))
+                    if len(output_variables) > 1:
+                        parameter = variable.getformalParameter()
+                        vars.append([(parameter, input_info),
+                                     (" := ", ())] + generator.ExtractModifier(variable, value, input_info))
+                    else:
+                        vars.append(generator.ExtractModifier(variable, value, input_info))
+            for i, variable in enumerate(output_variables):
+                parameter = variable.getformalParameter()
+                if variable.getformalParameter() == "":
+                    variable_name = "%s%d_OUT"%(type, block.getlocalId())
+                else:
+                    variable_name = "%s%d_%s"%(type, block.getlocalId(), parameter)
+                if generator.Interface[-1][0] != "VAR" or generator.Interface[-1][1] or generator.Interface[-1][2] or generator.Interface[-1][3]:
+                    generator.Interface.append(("VAR", False, False, False, []))
+                if variable.connectionPointOut in generator.ConnectionTypes:
+                    generator.Interface[-1][4].append((generator.ConnectionTypes[variable.connectionPointOut], variable_name, None, None))
+                else:
+                    generator.Interface[-1][4].append(("ANY", variable_name, None, None))
+                if len(output_variables) > 1 and parameter not in ["", "OUT"]:
+                    vars.append([(parameter, (generator.TagName, "block", block.getlocalId(), "output", i)), 
+                                 (" => %s"%variable_name, ())])
+                else:
+                    output_info = (generator.TagName, "block", block.getlocalId(), "output", i)
+                    output_name = variable_name
             generator.Program += [(generator.CurrentIndent, ()),
                                   (output_name, output_info),
                                   (" := ", ()),
@@ -69,7 +84,20 @@
                                   ("(", ())]
             generator.Program += JoinList([(", ", ())], vars)
             generator.Program += [(");\n", ())]
-        return generator.ExtractModifier(output_variable, [(output_name, output_info)], output_info)
+        if link:
+            connectionPoint = link.getposition()[-1]
+        else:
+            connectionPoint = None
+        for i, variable in enumerate(output_variables):
+            blockPointx, blockPointy = variable.connectionPointOut.getrelPositionXY()
+            if not connectionPoint or block.getx() + blockPointx == connectionPoint.getx() and block.gety() + blockPointy == connectionPoint.gety():
+                output_info = (generator.TagName, "block", block.getlocalId(), "output", i)
+                output_name = variable.getformalParameter()
+                if variable.getformalParameter() == "":
+                    output_name = "%s%d_OUT"%(type, block.getlocalId())
+                else:
+                    output_name = "%s%d_%s"%(type, block.getlocalId(), variable.getformalParameter())
+                return generator.ExtractModifier(variable, [(output_name, output_info)], output_info)
     elif block_infos["type"] == "functionBlock":
         if not generator.ComputedBlocks.get(block, False) and not order:
             generator.ComputedBlocks[block] = True
@@ -93,10 +121,10 @@
             connectionPoint = None
         for i, variable in enumerate(block.outputVariables.getvariable()):
             blockPointx, blockPointy = variable.connectionPointOut.getrelPositionXY()
-            output_info = (generator.TagName, "block", block.getlocalId(), "output", i)
             if not connectionPoint or block.getx() + blockPointx == connectionPoint.getx() and block.gety() + blockPointy == connectionPoint.gety():
+                output_info = (generator.TagName, "block", block.getlocalId(), "output", i)
                 return generator.ExtractModifier(variable, [("%s.%s"%(name, variable.getformalParameter()), output_info)], output_info)
-        raise ValueError, "No output variable found"
+    raise ValueError, "No output variable found"
 
 def initialise_block(type, name, block = None):
     return [(type, name, None, None)]