diff -r 9c5b20dc2b2e -r 19dc6b830e7d ProjectController.py
--- a/ProjectController.py	Thu Apr 18 14:29:55 2019 +0200
+++ b/ProjectController.py	Thu Apr 18 14:32:43 2019 +0200
@@ -1446,13 +1446,13 @@
 
     def UpdateMethodsFromPLCStatus(self):
         updated = False
-        status = None
+        status = PlcStatus.Disconnected
         if self._connector is not None:
             PLCstatus = self._connector.GetPLCstatus()
             if PLCstatus is not None:
                 status, log_count = PLCstatus
                 self.UpdatePLCLog(log_count)
-        if status is None:
+        if status == PlcStatus.Disconnected:
             self._SetConnector(None, False)
             status = PlcStatus.Disconnected
         if self.previous_plcstate != status: