--- a/etherlab/EthercatCIA402Slave.py	Sat Sep 29 16:29:41 2018 +0300
+++ b/etherlab/EthercatCIA402Slave.py	Sat Sep 29 16:31:54 2018 +0300
@@ -133,6 +133,8 @@
 # --------------------------------------------------
 
     def __init__(self):
+        _EthercatSlaveCTN.__init__(self)
+
         # ----------- call ethercat mng. function --------------
         self.CommonMethod = _CommonSlave(self)