![]() ![]() It’s also normal to denote whether a tag is an input or an output, so we can make the input tags start with LI and the output tags start with LO. Since we only have Local I/O in this tutorial, let’s start our input and output tag names with L. So, we typically divide I/O into Local and Distributed, and it’s common to use L and D to denote them. Then use descriptions to document thoroughly. Come up with short forms for all the equipment and components of your system, and stick to that for tag naming. Programmers who are new to RSLogix 5000 tend to create Really_Long_Tag_Names_Just_Because_They_Can. If you came from the SLC 500 side, you’ll appreciate the conciseness of B3:5/0. When you’re trying to fit lots of logic on one rung without wrapping, it’s helpful to have short tag names. ![]() I’m also a fan of short tags and long descriptions. Ideally, a person who has to look at the program later just wants to find a tag name in the program that matches the wire number or device name in the real world. Specifically, it’s important that it’s easy to identify the device, I/O wire, input point, and the contact or coil in the program with each other. Naming of devices and I/O is a Big Deal ™ in the design of a control system. I didn’t bother creating one for this tutorial, but assume we’re dealing with the following:īefore we add them, realize that we need to give each one a name. Normally when you’re creating a new project, you’ll be starting from an electrical design. This is part of an RSLogix 5000 Tutorial. ![]()
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