fer_curt Posted February 1, 2012 Report Share Posted February 1, 2012 Hello. I'm new with Unitronics (and ladder). The question is: database data (e.g. MI) are available after a power down? Or is in RAM Memory? Thank you. Fernando (Argentina) Quote Link to comment Share on other sites More sharing options...
AlexUT Posted February 1, 2012 Report Share Posted February 1, 2012 Hi Fernando, MI is not a Database, it is a Memoty Integer. There is a backup batery to back up memory content, which include many other data types. As a regular MIs are accessible after power cicle, but some modes of startup/reset will make init for internal memory. So there is no yes or no. Answer is - it may have previous value and may not. You need to know exactly what you need to implement, and there are other methods to save memory registers status. I recommend you to start from some basic things and then go forward. There is a forum topic which partially answers how to learn PLC. http://www.unitronic...sp?TOPIC_ID=527 But I recommend you download VisiLogic from Unitronics web site. It includes free examples and help. And it is free. I will recommend you to download next 2 files from Unitronics site and start to read. http://www.unitronics.com/Data/Uploads/VisiLogic_Software_New/VisiLogic%20-%20Getting_Started.pdf http://www.unitronics.com/Data/Uploads/VisiLogic_Software_New/VisiLogic%20-%20Ladder%20Programming.pdf There is an e-learning link: http://www.unitronics.com/Content.aspx?page=e-Learning I wish you success. Quote Link to comment Share on other sites More sharing options...
fer_curt Posted February 1, 2012 Author Report Share Posted February 1, 2012 Thank you. I'm reading what you send. Regards Quote Link to comment Share on other sites More sharing options...
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