Flex727
MVP 2016-
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About Flex727
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UniGuru
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IS this MODBUS? There are limitations in the MODBUS standard for register reads.
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Do I understand you correctly that you are trying to read 255 registers at once via MODBUS? I believe there is a limit to how many registers you can read with a single Read Holding Registers command (a MODBUS limit, not Unitronics). Try breaking it up into multiple reads.
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Post your code for the V350.
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Yes, timeout values will impact performance in this situation.
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Just use any unused MI to hold the value that will change depending on the state of MB 31.
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If the connection is lost, the socket is already closed, is it not? Isn't the socket being open the definition of a connection? Just reconnect. In fact, if you gate the socket connect function with an inverted contact of a bit that is on when the socket is open, you can trigger a reconnect as often as you like and it will do nothing until the connection is lost.
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Perhaps I don't understand what you're doing because it seems simple and obvious what to do. Use a buffer MI to store the value you want to go to the analog output. Use two rungs, one with a direct contact of MB 31 to store MI 20 to your buffer MI and a second rung with an inverted contact of MB 31 to store MI 22 to the buffer MI. Use the buffer MI in the Linearization function block.
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Well, that's frightening. I use that frequently and had no idea I was at risk of removing an operand that was in use. Not horrible, I suppose, since it's only removing the description. It sounds like there may be a bug in that routine.
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Which elements are not being found under View / Operands Not Referenced in Project?
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Post your code.
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Hey Flex,
This is Ryan, we spoke on the phone about a week ago. I wanted to see if you could lend your expertise to a blog post I wrote about Unitronics platforms as a whole. Perhaps you would have something to weigh in on or critique. I wouldn't want to be providing anyone with inferior information and would really appreciate your review!
http://automationprimer.com/2017/06/11/unitronics/
That's a link to the post. Please, let me know what you think. The host of that site is a really nice guy too, maybe you'll like the site if you haven't discovered it already. Thanks!
Best,
Ryan -
This is rare, but I've seen it happen, too. I do what you do - change something else inconsequential. The other alternative is to select Download All & Burn, but that is rather lengthy. I know Unitronics is aware of this as it was mentioned by the instructor in a training course some years ago.
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Have you looked at the "Projected Memory Map" under the Build menu?
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https://www.google.com/search?q=.rar
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Hmmm, I was thinking of the Vision products. I agree that I don't see any applicable display System Integers. It does sound like a hardware fail, but you should check with Unitronics Support for any procedure they might have to troubleshoot. Just email with your problem description above to: support@unitronics.com.
