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JohnR

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About JohnR

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  1. Run-time error 3709

    well, a week since I cleared my log files and it's still running.............. odd the the "run time error" description does not lead you that direction.... stranger things have happened, just you wait and see.......
  2. Run-time error 3709

    Thanks for the input Cam, I'll look at that tomorrow and see if it helps. BTW, back at work after 3 months of sitting on my behind.......... JohnR
  3. Run-time error 3709

    Bump........ Creators? Anyone? JohnR
  4. Hey All, I know this is an old thread, and the OP has come up with a solution, but just wanted to share for future reference......... A couple years back I had a machine setup with an M91 in an awkward location, and I went through many plc's, not only through physical abuse, but also direct spray from high pressure water washdown damaging the keypad, after buying unit after unit, Joe T (my distributor), was able to get me replacement keypads so I could take the unit apart, peel off the old keypad and apply a new one, much more cost effective in a chronic damage location. I don't recall the part number offhand ....... Joe T, care to interject? JohnR
  5. Hey All, I've been out of our plant for a few months recovering from some surgery, but I do log into a PC I use about once a week. This PC is running two instances of DataExport, each collecting data daily from two different control systems, and I typically just let them run in the backround. I have been running it like this for a few years, but lately one of these has been dropping out and popping up a window showing "Run-time error 3709", "The connection cannot be used to preform this operation. It is either closed or invalid in this context." Has anyone out there seen this before, or know what the error is trying to tell me? Regards, JohnR
  6. Anthropomorphizing PLCs

    Well, I use to comment my code in the first person; "In this net "I" store the raw encoder count from MI 1 to MI 12, then "I" scale it for use on the display....." But, over the years I've come to commenting in the third person; "In this net "We" store the raw encoder count from MI 1 to MI 12, then "We" scale it for use on the display....." It make the PLC feel like he is really part of the process......
  7. Shielding/Screening

    Screen/Shield, always been the same thing in my mind, although from a broader perspective, shielding may refer to the braid/foil/drain wire on a cable, while screening may be thought of as something in a bigger sense, like a metal (screen) partition between noisy parts of a panel and noise sensitive parts..... I've been doing industrial control for 30 years, and was always lead to believe "one end" grounding to be proper in this field. But, before that, I worked in the audio electronics field, and the proper method was to ground both ends of the shield, but you also did your best to maintain a "star ground" topology to eliminate potential ground loops..... just my 2cents..... Disclaimer.... at least in my part of the world, I realize Aus and others have words and meanings that us funny tawkers don't get........ JohnR
  8. Hi Cam, Good call....... Silly old me, I have a RHR to get the fault code from the VFD right below MI 13, and the vector length was set to 16..... DUH....... JohnR
  9. Hey All, Just ran across a quirky little thing while working on a new project, I'm wondering if anyone else has experienced this..... I'm doing MODBUS control of an AB Powerflex VFD , and mind you this is not my first experience doing this, I've done several projects using V570's, and usually do not run into problems. This time I'm building some controls around a V120, and I am having an issue reading the speed feedback (frequency) from the VFD. I've compared my logic to a previous project (logic looks the same, only difference is the MI's used in the RHR FB), and even set up two PLC's on my workbench (V570 & V120), and hooked up each to the same VFD to test. Problem I have is that when the net is true, I get the correct reading, but when the net is not true I get some other number in MI 13. I have searched MI 13 and it shows it only being used in the RHR FB and on the display. I have slowed down my index to 1 Sec per step so I can see it in debug, and find that if I unplug my MODBUS cable while The net is true, then MI 13 stays put even after the net goes false, so it doesn't seem that the funny number is being driven by something in the program. V570 reading speed feedback of 60Hz V120 reading speed feedback of 30Hz when the index equals in that net V120 reading something else when the index does not equal in that net I'm starting to wonder if it has something to do with Enhanced Vision vs. Standard Vision? Any thoughts? Regards, JohnR
  10. JohnR

    images for forum
  11. JohnR

    screenshots
  12. That's interesting Joe, I never paid attention to SB13, I've always just used a Positive Transition Contact with SB3 when I roll my own timers.... Also, did you do this on the new "wide screen" version? it opens on my older version, but net 3 is clipped off. Something I guess we gotta watch out for as we transition into the wide screen format.... JohnR
  13. This is a repeat of what I posted on Cara's blog last week, just in case some of the community didn't see it there..... Just downloaded this new version, and did a clean install on a stand-alone "sandbox" PC (just a bit of caution on my part, evaluate before I install on my main work station). Thank you for the wide ladder area, I've been grumbling about that empty space for years, that will cut down on the wrap-around rungs. I suppose it would be too much to ask for, but it would be nice if when you open an older project, and the Version Update window opens telling you it's going to update the project to the new version, that it could also remove the wrap-around lines and put the rung in a straight line (or fewer wrap-arounds depending on how long the rung is). The Mobile Remote Operator is also an interesting feature, but there are those of us who have Androids but don't like being tied to Google-world, any chance you could make the APK install file available for download on the Unitronics website for those of us who prefer to do manual installs? regards, JohnR
  14. Hey All, I imagine this has been covered before, but I can't seem to find it........ I'm doing some housekeeping in my file folders, and I see a lot of numbered extensions to my projects. that is, instead of the .vlp extension there will be extensions like .22 , .24 , .27 , .146...... I assume that these are backups of some sort, but do I really need them? Can I safely delete them? JohnR
  15. New VisiLogic Version 9.8.64

    Just downloaded this new version, and did a clean install on a stand-alone "sandbox" PC (just a bit of caution on my part, evaluate before I install on my main work station). Thank you for the wide ladder area, I've been grumbling about that empty space for years, that will cut down on the wrap-around rungs. I suppose it would be too much to ask for, but it would be nice if when you open an older project, and the Version Update window opens telling you it's going to update the project to the new version, that it could also remove the wrap-around lines and put the rung in a straight line (or fewer wrap-arounds depending on how long the rung is). The Mobile Remote Operator is also an interesting feature, but there are those of us who have Androids but don't like being tied to Google-world, any chance you could make the APK install file available for download on the Unitronics website for those of us who prefer to do manual installs? regards, JohnR
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