Jump to content

John_R

Members
  • Posts

    183
  • Joined

  • Last visited

  • Days Won

    3

John_R last won the day on February 11

John_R had the most liked content!

Profile Information

  • Gender
    Not Telling

Recent Profile Visitors

2,886 profile views

John_R's Achievements

UniGuru

UniGuru (4/4)

14

Reputation

  1. Aus... Sorry for the confusion, we Americanos also call them "muffin"fans... I'm pretty sure this would be a shaded pole motor.. I've also done the tranny thing in the past, just thought as an experiment I'd try this as it seems I already have the hardware in place. John
  2. Hey All, I'm playing with one of my home projects where I have a 6" "boxer" fan (120vac 85W) cooling some components. The fan is currently controlled from my PLC with a PNP output turning on a random crossing SS relay (AD-SSR810-DC-48R). I would like to slow down the speed of the fan, and seems it should be just a matter of adding HSO/PWM to the output? But I've not done this before, so before I let the smoke out of things here, I figured I'd ask for opinions... What do you'all think??
  3. this is how I deal with a 1-per rev "z" pulse. using the compare function eliminates the zero error you might try something like this, but use a count of three instead of one??
  4. The best way I have used involves setting up a DT (Data Table) to hold your records, then an interval timer that is used to increment a counter which sets the row you are writing to in the DT, as well as implements the save command. The DT can then be retrieved to your PC using the DataXport utility and can be saved as a CVS or Excel file. Look at Help/Examples/Version900/Project Examples/Data Table/V570_data_log.vlp We are all happy to help, but you gotta work for it.... Work with this example and show us what you come up with, then we can all give you pointers after you figure out where you are going
  5. I can remember a time in the "way-back", when I had set up a control for a small machine. just a PLC with switches and lamps for the User Interface, then they decided they needed to be able to adjust the time of a certain function, so I added some small red lion display that showed the timer preset with up/down buttons to change the value. For some reason I couldn't define the decimal position on the display, and the operator was confused by the term Implied Decimal. I'd point to the spot and say "just pretend there is a decimal point here", he still didn't get it... Finally, I grabbed a bottle of White-Out, and made a "dot" on the display.... Oh, now I get it....
  6. I remember seeing a memory device similar to this at my first mentors workshop back in the mid '70's It was an archaic thing at that point, but I seem to remember that the memory bank included inductor/cap/resistor circuits that "remembered" their last logic state, and transferred that with some sort of FIFO logic. Crazy thinking back in those days, but we wouldn't be where we are without it.... 😵 Now, what happens when you throw one of these in front of a young'un? I still have my first TI-35 scientific calculator that I bought in the '70's....
  7. I thought about trying car wax, but was afraid that it would dry pinkish/white in the scratches and look even worse... But that gets me thinking about some magic "as seen on TV" scratch remover for car clear coat finishes, perhaps something like that would work well....
  8. Well, once again Joe, you are correct But the bizarre thing is that in all my years using Remote Access "back at the plant", I've never had to do that??? JohnR ⛄
  9. alright Fellas, riddle me this.......... I have a V570 out in my workshop, one of its duties is control of the heaters in two different rooms. On the Heat Control display I have a couple of indicators (binary images linked to outputs) that turn green when the output to the heater relay is on. Which works as it should when in debug from Vision (and on the V570 itself); But when I go to Remote Access to look at the same display (from the same PC), my indicators do not work; I first thought it was because I had an older version of Remote Access install, so I replaced it with the newest version, same results. Anyone have any ideas why it does this? JohnR
  10. Hey All, I'm wondering if anyone has some good tip/tricks for dealing with scratches and scuffs on touchscreens. At this point I'm working on a PV+1000, that someone had cleaned with a scotchbrite pad, but of course this would apply to any brand... I keep visualizing some sort of "polymer" substance that would flow into the abrasions, and buffed when dry, thereby hiding the scratches, but I've not yet found that magic product.... Seems like that would be some sort of "headlight scratch remover" or some similar product? Ideas anyone? 🤔 Regards, JohnR
  11. A woman is visiting her husband who is in prison. As she is leaving, she tells the prison guard; "You need to stop working my husband so hard, he is exhausted" The prison guard laughed and said; "Ha, your husband does nothing but eat, sleep and stay in his cell" The wife says; "Well that's odd, he tells me he's been digging a tunnel for months...."
  12. Two hats were hanging on a hat rack in the hallway. One hat said to the other; "You stay here, I'll go on a head" I wondered why the baseball kept getting bigger, then it hit me.....
  13. Well, as a follow up... I did set up a T/C welder (as suggested in Kratmel's post) with a tungsten in a modified tip in my MIG with an argon gas shield, and welded the T/C junction instead of soldering. But, in a side by side comparison, the readings from the welded junction and the soldered junction were almost identical, so much for the theory that the solder flow induced an offset the reading (which is a relief in one way as I have been doing soldered junctions for years). And since my mentor, Joe T, has said many times, "empirical data tells all"..., I will build an offset into my code to make my readings closer to being correct... JohnR
  14. OH MY.... I didn't catch that shameless inclusion of the JTA sticker... 🙄 But Joe, I can give you my paypal info if that's easier than the WalMart cards.... 🤑 I think I'll play around with the MIG method using an argon shield as I have that available in my shop.... JohnR
  15. Hey All, I'm working a a little home workshop playtime project... I'm using a V570 with a V200-18-E3XB snap I/O module. I "hand-rolled" some type T thermocouples (wires at the business end tightly twisted and soldered to create my TC junction). Each T/C is about 30 ft long, and a direct connection with the E3XB module. I find that the readings I get at room temp are about 8 deg F higher than I get with "real" thermometers. I know I can build an offset into my readings, but curious where the discrepancy lies; Does the solder (60/40) that flows through the twisted Copper/Constantan junction create an offset? Does this fall within the expected accuracy of the E3XB module? Or is it something else? Anyone have any input on this matter? Regards, JohnR
×
×
  • Create New...