![]() However, the principles are basically the same, so that if you get a handle on the material in this tutorial, I am sure you will be able to figure it out! LIFOs can also be used in Studio 5000, but this tutorial will focus exclusively on FIFOs. Or, if you are the last person to get into a packed subway car, you will be the first one out at the next station. If you stack ten pallets on top of each other, the last one in will necessarily be the first one out. This is often used when items are stored in stacks. There is another way of organizing a queue that simply reverses this arrangement: LIFO or Last-In-First-Out. The order in which the people arrive is the order in which they will be processed. No matter how fast or slow they are served, or how many people are added to the line, the next person to be served (the next person who will be ‘out’) will always be the one who has been standing the longest (who was ‘first in’). We’ve all encountered this in everyday life picture a single file line of people waiting to order ice cream. This refers to the organizing principle of a queue or list. Understanding FIFOsįIFO stands for First-In-First-Out, or put another way, first-come-first-served. ![]() In this article, you will learn what a FIFO is, how to set one up in Allen-Bradley’s Studio 5000 software, and how useful they can be. It is a great tool to have in your arsenal. At some point in your PLC Programming journey, you are likely to come across a FIFO, or to encounter a situation where using one would solve a problem. ![]()
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