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  1. Yesterday
  2. Can't you use Store/Direct to put 0 into DW0 when at the home point? I also note that in a very quick look at your program that you have DW0 power up value set at 0. There are pros and cons to this, retaining the value might be beneficial. cheers, Aus
  3. I need help too in this problem. i use intermec (honewell) model sg20. i hope anybody have the answer. Regards.
  4. Ausman

    communication issues

    jt, you've said that you've checked the M91's comm settings. How did you do this? Did you use information mode? If not, look at the help file about info mode and then access the comm settings with the plc running to indeed make sure they are what you say. Ensure it is in run mode using info mode, too. If this doesn't work, I think you need to have a good read of the post linked below and perhaps the rest of the topic. And also read the entire topic linked within my post. Perhaps your Gold X doesn't have a real 2302......both topics are lengthy but have good explanations. I would also think about using the program mentioned to completely clean all your usb to serial drivers out and start again but being more careful with drivers. There is likely a very simple explanation here, but it could also be way more complex than you would desire! Some usb converters are a complete PITA, and that is why I only use truly genuine ones from the likes of Shentek etc. Read and learn some useful info anyway. cheers, Aus
  5. Hello, I'm using the Samba to control a simple servo. It works with the step control hso. Everething works ok , only it is not possible to make a homing cycle. How can i reset DW0 in the file included ? I can't do anything with this operand. There must be a solution because when there is no homing you can't use the stepper function to positioning ?? test stappenmotor.vlp
  6. Interroga

    Bar-code scanner usage in UniStream

    i have same problem with code reader usb sg20 - intermec. D'ont work in USB input usp-104-b10. I read all topics inside this forum and not found anwser. This model is defaul merck laboratories, company where give support in pharmaceutics systems. I need help for this case too. regards.
  7. Agree. I have had other plc brands get their EEPROMs completely changed, even though they are on very good filtered supplies and well enclosed. How? "Well....we did have a funny power thingy happen......" And.....wait until a lightning bolt happens nearby. I had one go metres above, but right over a roof loaded with HVAC equipment. Scared the poo out of everyone in the building. Nothing happened to the well located plc gear which runs it all directly from an internal spot, but a host of pressure sensors inside the metal enclosed mechanicals on the roof all got fried. We also get hits near our house, and this can play havoc with various electronics supposedly built to tolerate such things, particularly alarms with their simple unshielded cabling. Even the best attempts at suppression/protection measures can't compete with Mother Nature if she decides she's going to win! cheers, Aus
  8. jturner

    communication issues

    the controller is from a refrigerated dryer, i did buy a new controller from E bay, but i get the same fault, no matter which controller i connect too. i have called the company that the dryer come from but they are just bleeding me for more and more service calls at 600. dollars a vist and still not working. so i am looking at doing this repair myself, the Gold X USB converter i have has the Prolific PL2302 chip set. i will look into buying the suggested cables just hopping i dont have the same issue as i have now with new cables. i am in the U.S. and i do really appreciate the help all of yall have given me.
  9. All electronic equipment is subject to the vagaries of power supply and ambient electrical noise - sad fact of our lives. Still better than working in retail.
  10. Thank you for your answer. It is kind of weird only one timer had changed its value. The other +- 50 timers aren't changed.
  11. I've seen a power glitch (or surge) change timers before. Not sure how to prevent it other than make sure the power source is as clean as possible.
  12. Today I had a problem with a timer from a big program made in Visilogic. 2 months after downloading a new program into the V130, a timer changed itself from 00.00.00.09 to 99.59.59.99. The timer is only used by one contact and one coil. Did anyone ever experienced this too? And how can I prevent it from happening again? Thank you!
  13. Joe Tauser

    communication issues

    Interesting - that is a special OEM controller off an air compressor- https://meiinternational.com/collections/compressor-air-dryer-controllers/unitronics I'm guessing you bought this on eBay or Amazon and can't go back to your supplier for any assistance. You may locked out of uploading, as this is an OEM product. Tell us what driver files the system has assigned to your Gold X USB converter. Hopefully it has the Prolific PL2302 chipset - the FTDI chipset doesn't seem to work too well. @Flex727- the crossover flat cable is needed only if you're using a MJ10-25-cable adapter. If he wired the cable directly then the above connection diagram is correct. Quite frankly the best solution would be to get the Unitronics-approved USB adapter and programming cable. They're not expensive- MJ10-22-CS35 USB adapter RS232-CB1 programming cable What country are you in? Joe T.
  14. SCPI commands are just another kind of serial protocol, so the commands themselves aren't a problem. The question is whether or not the USB to GPIB converter will work as a stand-alone gateway or if a driver is needed. Joe T.
  15. Last week
  16. Flex727

    communication issues

    And you're definitely using a 6-wire cable? I think it needs to be a crossover cable, not a straight-through cable (not sure about that though).
  17. jturner

    communication issues

    do not have the cable t RS232 to Unitronics RJ11 PC programming cables PCs are normally not equipped with an RJ11 socket for serial RS232 communications. If we want to connect a PC with an Unitronics PLC, for example for programming or debugging reasons, we need a connection cable which is on one side fitted with a female DB9 connector, and on the other side with an RJ11 jack. The layout for this cable is shown below. Unitronics RJ11 RS232 programming cable DB9 RJ11 Function 2 3 RxD TxD 3 4 TxD RxD 4 6 DTR DSR 5 2 + 5 Signal ground 6 1 DSR DTR hat came with the unit used the pin layout provided in the connection chart
  18. Flex727

    communication issues

    What connection chart?
  19. jturner

    communication issues

    do not have the cable that came with the unit used the pin layout provided in the connection chart
  20. Ausman

    communication issues

    I have to go....over to you Flex! cheers, Aus
  21. Flex727

    communication issues

    Also, this isn't clear to me, are you using the programming cable supplied by Unitronics?
  22. 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?
  23. Flex727

    communication issues

    Do we know if that USB-to-Serial adapter is compatible with the M91? I have no experience with that adapter.
  24. I agree with Ausman - this is all very confusing. With the exception of the Standard Vision, V120, an MI will not hold a number large enough to drive the output to the maximum frequency in the spec.
  25. jturner

    communication issues

    yes sir it refreshed and stated com1 as port
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