diff --git a/dataLogger.py b/dataLogger.py
index 313b27e..df98581 100644
--- a/dataLogger.py
+++ b/dataLogger.py
@@ -241,7 +241,7 @@ def evalTapers():
 
 def main():
     global main_plc, device_types
-
+    main_plc = getMainPLC()
     readConfig()
     device_types = getDeviceTypes()
     if setupTags():