Posted 15 Jun 2017 I'm in the process of converting a F1/F2 PLC to an allen-bradley. I've got a print out of the ladder and trying to do a straight conversion. Most of the code if fairly straightforward but I'm not sure what the following rung does. I know it is a special function of some type but I can't find any info on it. Any ideas? Share this post Link to post Share on other sites
Posted 15 Jun 2017 The F1 and F2 manuals are in the downloads section here, I added them a decade ago. Share this post Link to post Share on other sites
Posted 15 Jun 2017 Explanation is on page 164 of the F2 programming manual in the downloads section. It's a compare instruction. Share this post Link to post Share on other sites
Posted 15 Jun 2017 Got it. The logic makes sense to me now. Thanks for the help. Share this post Link to post Share on other sites