--- a/runtime/PLCObject.py	Mon Aug 07 18:17:12 2023 +0200
+++ b/runtime/PLCObject.py	Thu Sep 28 17:56:03 2023 +0200
@@ -62,8 +62,9 @@
 
 
 def PLCprint(message):
-    sys.stdout.write("PLCobject : "+message+"\n")
-    sys.stdout.flush()
+    if sys.stdout:
+        sys.stdout.write("PLCobject : "+message+"\n")
+        sys.stdout.flush()
 
 
 def RunInMain(func):