Bits can also be internal coils (internally used in a PLC program but not tied to any real inputs or outputs). Discrete inputs and outputs are examples of bits. BitsĪ bit is computer-speak for a value or register that can only be a 1 or a 0 true or false.
NOTE: This is an original post, however it was inspired by a similar post at.
If you don't already have RSLogix 500 or Micro yet, you can get it along with RSLinx and RSLogix Emulate 500 by watching the first video in my FREE Mini PLC CourseĪlso, if you want an introduction to Ladder Logic before you start, check out this post. For everyone else, open up your RSLogix 500 (or 5 or Micro) and let's get to work. If you're new to Allen-Bradley PLC programming, I'm going to give you some information that you can put to work.immediately! In this free Allen-Bradley PLC training tutorial I'll walk you through the basics of addressing discrete inputs, outputs, binary bits, timers and counters.įor this basic PLC training tutorial, you will need RSLogix 500 or Micro to be able to test the concepts of this post.
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