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Ausman last won the day on January 20

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About Ausman

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    Love/Hate waking up with a solution to a problem. Thanks brain....for not sleeping properly!

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  1. Ausman

    communication issues

    I have to go....over to you Flex! cheers, Aus
  2. Ausman

    communication issues

    OK. In U90, under Controller/M90 OPLC Settings, did you click the Install USB Driver button at the bottom of the screen that opens?
  3. Ausman

    communication issues

    But did com 1 only appear when you plugged in your adapter?
  4. Cara, adding to Dan's good explanation, your very first red outline is the crux of the issue. The modules do not use this rule, so there needs to be specific mention in their manuals of what you link them with. I could find nothing that says it is a MI. It is not a huge issue, but the information available is confusing. cheers, Aus
  5. Ausman

    communication issues

    Also, seeing your "please help", remember that on this forum all posts are subject to moderator approval. There may be a delay in your request getting to the stage of approval and general visibility....the forum is mostly volunteers not employed by Unitronics so keep this mind. cheers, Aus
  6. Ausman

    communication issues

    jt, as Flex is implying, it is possible that com port 1 on the PC is not the port you need. Have device manager open in the PC and then plug in just your goldx adapter (not attached to plc) and see what happens in the com ports area. You should get the display refreshed and another port will appear that is the one related to the adapter. cheers, Aus
  7. And an oops to the above.....just realised that you will still need power, from somewhere, into the relay in the first place......my normal chip usage already has power in the form of what is running the leds. So I'd just go with 24. But I'd dig up the specifics about the relay on the device, by getting label details and checking specs, just to make sure. cheers, Aus
  8. Forgot to say that you can get tiny modules designed for Arduino etc that are effective SSRs for 5V signal work, and can handle 24V into the plc fine. I "grind" my own versions, based on HSF2/A213DN chip. I use this to interface directly into signals that normally feed leds, without needing any other power supply, but I think it would work well enough for your situation. But I can't see that putting 24 instead of 5 on the common is going to be terribly upsetting, given the tiny currents involved. I feel that it is more likely that the "normal reader" is reckoned by the manufacturer to be 5V based. Have a play with one of the chips, anyway...they are great and haven't failed me yet. cheers, Aus
  9. Ausman

    HMI input staying locked in logic

    I respectfully disagree. Often getting to know how to use something doesn't take a lot of ladderwork to simulate the particular operation you are trying to use, if you just stick to the single principle you are learning. And learning is the crucial word. We all learn something new every day! And sometimes something a little more complex takes a bit longer to rearrange the brain cells correctly, so an inevitable part of learning is the varying time spent doing so. I have used simulators in the past and none of them could accommodate some of the things I work with. It is a bit of a minefield because there are so many reactions possible to a plc instruction, and thus it is hard for the sim creators to cater for everything needed. cheers, Aus
  10. Ausman

    HMI input staying locked in logic

    As an aside, this is a classic instance of needing to understand the principle of how something slightly out of order for just one scan can completely upset an expected result. Sometimes they can be very hard to trace in complex programs. Although perhaps not relevant here, don't expect an element to do something. If unfamiliar with a process, learn all about the correct way to use it through actual trials of the basics before incorporating it into something bigger. cheers, Aus
  11. GenX, you need to have a good look at this page: https://unitronicsplc.com/support-technical-library/ The information you need is provided by the manufacturer on their website in the form of manuals for everything you possess. How to install, how to use etc etc. Get all the info for your devices and read them completely before doing anything more. cheers, Aus
  12. "Why?" Because the very last net that refers to the output is the one that over-rides all the other ones. Remember that the controller steps through the ladder sequentially, rung by rung. An analogy is a number of people going into a room and wanting the lights either on or off. George goes in and turns them on. Geoff goes in next and wants them off. Derek goes in after him and wants them on. Last of all, Admir goes in and wants them off. Because Admir is the last person in the room before everyone else is allowed in again (the end of the scan) the lights are switched according to what Admir wants, (in this case OFF) totally ignoring any other preferences from George, Geoff and Derek. So if the need is for any of the 4 people to independently turn the lights on, they all have to have their request processed at the same time (in the same rung) and if any one or combination of them wants them on then it is done. There are variations of this rule according to whether the various controls are in subroutines that are being called, but for now this hopefully helps you understand this basic PLC programming rule. cheers, Aus
  13. You can use Info mode to do it directly on the plc, or if connected using U90, Controller/ M90 OPLC Settings brings up com port settings where you will find RTC handling buttons....hover for what they do. cheers, Aus
  14. Thanks for checking Dan. @Cara Bereck Levy Please include the use of the MI in the I/O manual. cheers, Aus
  15. Hi Dan, the first thing my brain asks is what is the length of the pulse? Does it change with frequency, or is it a fixed number of ms? So I looked up about KYZ and found this site which explains it well: http://solidstateinstruments.com/newsletters/kyz-pulses.php As it appears that the length of pulse does change with frequency on an approx 50/50 relationship, and given the relatively slow nature of the switch, at first I wouldn't even bother and see how it goes only using standard inputs. If bounce does seem to be appearing, still use a standard input but linked to a TE set at 20ms, which should effectively give you a debounce good enough and cover all scenarios. Another possible method would be to use something similar to my suggestion below, and progressively tally the result, but it might not be as accurate. Perhaps read the entire topic. cheers, Aus