perpetual98

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About perpetual98

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  1. Turning Lights On And Off With Plc

    Holy Christmas. I haven't gotten any emails regarding this thread being active. Wordman, I know that the wire colors are wrong. That is just what I had laying around at home, so that's what I used. Everything is running swimmingly. If I were to go back and change some things to the cabinet, I'd install a couple hand-off-auto switches on the lights so that I could turn them on and off manually if I wanted to. Now I'm a slave to the PLC. I'd also install a port on the side of the box so I could plug into the PLC without having to open the cover. Right now one of my sets of lights is coming on an hour later than I want because I wasn't thinking when I used the GRT command. I've got some pictures up of my aquariums, mainly macro shots though in my personal gallery. You can check them out at www.ericfeige.com Thanks! Eric
  2. Turning Lights On And Off With Plc

    Well, I accidentally fixed it. Not sure how. I think it had to do with the fact that I had two rungs for the same output. I wanted one of the rungs to energize and output twice in one day (morning/evening) and maybe that's what was screwing it up. Anyway, here's some pictures of a prototype I made this weekend.
  3. Turning Lights On And Off With Plc

    Ok, I got the hardware side built and wired this weekend. Now I realize that my ladder is not working. I'm trying to control several sets of lights. One of the rungs uses a GRT and LES command (I've tried GEQ and LEQ) too and it's set to turn on output O:0/1 and uses the RTC:0.HR to energize the output from 14:00 to 22:00. The second run uses the GRT and LES setup like TWControls gave me so I can manually enter the minutes, i.e. turn on at 14:30 and off at 21:30. My issue comes up that it only lets me do one set of lights. Can you not use multiple rungs referencing the RTC? Thanks! Eric
  4. Turning Lights On And Off With Plc

    Lookin' good! I used manually entered constants, and I also used the ladder from the top response so that I could enter the minutes and it works like a champ! Thanks for your help guys! Now on to analog inputs... He he he Eric
  5. Turning Lights On And Off With Plc

    Thanks for the help guys. I'll try the constants when I get home. I got some programming help from a guy at work too, but I can't open up the file because I didn't bring my laptop to work. D'oh! If he comes up with something different, I'll let you guys know too. Eric
  6. Turning Lights On And Off With Plc

    I'm sure that's the problem. i didn't do anything with the data file, but I was looking at them when I got your response. I'm going to wrap it up for today and try again tomorrow. Thanks for your help thus far! Eric
  7. Turning Lights On And Off With Plc

    Hmm, i entered that logic and i'm totally lost and it gives me an error. Maybe I'm already in over my head. You'd think this would be an easy thing, but it must not be too common in the industrial world.
  8. Hi all. First post here, so be gentle. I just started playing around with an AB Micrologix 1500 with RTC installed and RSLogix 500 to program it. Here's what I'm after: A PLC that will control/automate all of the functions of my two 120 gallon saltwater fishtanks in my living room. I've set up some rather basic things now using DC inputs turning on DC outputs, but one of the things that I thought would be the easiest, it turning out to be the hardest. I've searched all over and can't find what I'm looking for. What I'm trying to do is figure out the logic that turns outputs on at certain times of the day so that I can control the lights. For example, at 2:00PM I want an output to turn on so an outlet gets energized and a set of lights turns on. At 2:30, another output turns on, etc. Then at 9:30PM the first outlet turns off..... I can't imagine that it would be that hard, but for a newbie like me, it's becoming frustrating. Any help would be appreciated. Thank you! Eric