That, for me, needs to be sufficient to park this fairly previous thread and not go into those explanations why the issue was requested. The reason I say that's not mostly since the thread is many years previous. It really is as the question that was requested has validity in https://siemens-s7-150015688.blogspothub.com/14496794/the-single-best-strategy-to-use-for-modicon-m580