diff -r cbdfef9b2020 -r de7ddb376150 PLCControler.py
--- a/PLCControler.py	Tue Aug 19 18:04:56 2008 +0200
+++ b/PLCControler.py	Tue Aug 19 18:06:41 2008 +0200
@@ -643,8 +643,16 @@
         current_varlist = None
         current_type = None
         for var in vars:
-            if current_type != (var["Class"], var["Retain"], var["Constant"], var["Location"] in ["", None]):
-                current_type = (var["Class"], var["Retain"], var["Constant"], var["Location"] in ["", None])
+            next_type = (var["Class"], 
+                                var["Retain"], 
+                                var["Constant"], 
+                                var["Location"] in ["", None] or 
+                                    # When declaring globals, located 
+                                    # and not located variables are 
+                                    # in the same declaration block
+                                    var["Class"] == "Global")
+            if current_type != next_type:
+                current_type = next_type
                 if var["Class"] == "Local":
                     current_varlist = plcopen.interface_localVars()
                 elif var["Class"] == "Global":
@@ -1685,12 +1693,12 @@
             new_type = infos.get("type", old_type)
             old_typeinfos = self.GetBlockType(old_type)
             new_typeinfos = self.GetBlockType(new_type)
-            if new_typeinfos["type"] != old_typeinfos["type"]:
+            if new_type != old_type and new_typeinfos["type"] != old_typeinfos["type"]:
                 if new_typeinfos["type"] == "function":
                     self.RemoveEditedElementPouVar(tagname, old_type, old_name)
                 else:
                     self.AddEditedElementPouVar(tagname, new_type, new_name)
-            elif new_typeinfos["type"] != "function" and old_name != new_name:
+            elif old_name != new_name and new_typeinfos["type"] != "function":
                 self.ChangeEditedElementPouVar(tagname, old_type, old_name, new_type, new_name)
             for param, value in infos.items():
                 if param == "name":