![]() ![]() The program itself is in one area of RAM and must be kept in memory even when the PLC is powered off. This type of memory may be volatile or non-volatile, and it can (and will) be overwritten often. Program and data memory in a PLC is contained in “RAM” (Random Access Memory). As this is an evolutionary process, it will undergo many changes. Todays post is an excerpt from part of the course, and I welcome any comments or critiques. I have nearly doubled the size of the material since then including a fairly extensive computer and PLC history, which I may post excerpts from later. ![]() ![]() I was able to test a prototype a few weeks ago with a regular customer of mine down in Miami, and it went pretty well. As I have mentioned previously, I have been working on a generic PLC course that I hope to release in some kind of online software format soon. ![]()
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