diff --git a/pyren3/mod_ddt_ecu.py b/pyren3/mod_ddt_ecu.py
index 7b23265..7d86a8b 100644
--- a/pyren3/mod_ddt_ecu.py
+++ b/pyren3/mod_ddt_ecu.py
@@ -339,6 +339,16 @@ class DDTECU():
     
     #print et.dump(root)
 
+    try:
+      funcs = root.findall('ns0:Target/ns0:Function', ns)
+      if funcs:
+        for fun in funcs:
+          self.Addr = can.attrib["Address"]
+          if len(self.Addr):
+            self.Addr = hex(int(self.Addr))[2:]
+    except:
+      self.Addr = None
+
     cans = root.findall('ns0:Target/ns0:CAN', ns) #xdoc.findall("CAN")
     if cans:
       for can in cans:
diff --git a/pyren3/mod_ddt_screen.py b/pyren3/mod_ddt_screen.py
index 9911c72..95b0823 100644
--- a/pyren3/mod_ddt_screen.py
+++ b/pyren3/mod_ddt_screen.py
@@ -730,17 +730,18 @@ class DDTScreen (tk.Frame):
         # show confirmation dialog if approve is True
         confirmed = True
         xText = f'#The macro made by mod_ddt from file {fname}\n\n'
-        xText += f'$addr = {self.decu.cecu["dst"]}\n\n'
-        if self.decu.cecu["pin"] == 'can' and self.decu.cecu["brp"] == '0':
-            xText += f'can500  # init can macro\n\n'
-        elif self.decu.cecu["pin"] == 'can' and self.decu.cecu["brp"] == '1':
-            xText += f'can250  # init can macro\n\n'
-        else:
-            xText += f'fast  # init iso macro\n\n'
-        xText += f'delay 1\n\n'
-        xText += f'# open session\n\n'
-        xText += f'session {self.decu.cecu["startDiagReq"]}\n\n'
-        xText += f'# configuration\n\n'
+        if self.decu.cecu != None:
+            xText += f'$addr = {self.decu.cecu["dst"]}\n\n'
+            if self.decu.cecu["pin"] == 'can' and self.decu.cecu["brp"] == '0':
+                xText += f'can500  # init can macro\n\n'
+            elif self.decu.cecu["pin"] == 'can' and self.decu.cecu["brp"] == '1':
+                xText += f'can250  # init can macro\n\n'
+            else:
+                xText += f'fast  # init iso macro\n\n'
+            xText += f'delay 1\n\n'
+            xText += f'# open session\n\n'
+            xText += f'session {self.decu.cecu["startDiagReq"]}\n\n'
+            xText += f'# configuration\n\n'
 
         for i in conf_1:
             xText += f'{i}\n'