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Showing content with the highest reputation on 02/14/2020 in all areas

  1. 1 point
    Logan, I thought about entering into this topic with some personal observations, but decided not to as it was running along quite well. I've had instances of something similar when using a serial modbus line with quite a few slaves. I'd lower the speed b/n calls until it became unstable, then back it off (hmmm "raise it up"?) until it all ran ok. Would do other jobs around the site for the day and it would still be going fine on leaving. A few days later it would fall over, and the cure was a slight increase in delay times. I can only theorise that my initial time was running very close to not allowing the buffer to clear properly, and eventually the accumulated(ing) stuff reached a tipping point where it cracked the poops. All the info being derived was always the same amount of transmission. Whether this can happen using TCP I don't know, but it does sound awfully familiar. For me, buffers in Unitronics land sometimes pose issues that have to be allowed for. cheers, Aus
  2. 1 point
    For anyone producing their own electrical/control drawings you may have noticed the downloadable blocks in the technical library. Personally I have only ever found these useful for overall dimensions or to show the display on a general arrangement drawing. It's a shame we don't have anything showing the actual connections in .dwg (a bit like the images in the install guide). Anyway I will post here something which has helped me provide clients with a reference for connections. These are blocks and in reality the PLC connections will have interconnecting wires and all the usual stuff you would expect. I have lost count of the amount of times I have encountered the terminal number vs input/output number confusion!! Feel free to offer any thoughts. V350_Blocks.pdf V350_Blocks.dwg
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