diff --git a/devices/SDP.py b/devices/SDP.py
index a6e9c15dc63258dd2183351e8b07a73175417a7e..10f222811c44ce53c06a70e8db65807ee5f1e1b6 100644
--- a/devices/SDP.py
+++ b/devices/SDP.py
@@ -136,7 +136,10 @@ class SDP(hardware_device):
 
         # map an access helper class
         for i in self.attr_list():
-            i.set_comm_client(self.OPCua_client)
+            try:
+                i.set_comm_client(self.OPCua_client)
+            except:
+                pass
 
         self.OPCua_client.start()