--- a/Beremiz_service.py	Wed Dec 07 18:32:34 2016 +0300
+++ b/Beremiz_service.py	Wed Dec 07 19:24:16 2016 +0300
@@ -411,6 +411,7 @@
     def Quit(self):
         self.continueloop = False
         if self.plcobj is not None:
+            self.plcobj.StopPLC()
             self.plcobj.UnLoadPLC()
         self.Stop()