MVP 2021 Flex727 Posted March 4, 2015 MVP 2021 Report Share Posted March 4, 2015 I've been using the Vision products for many years now and have been looking forward to moving up to UniStream for many of its advanced features. I have just begun that transition and I am already finding some problems that I don't understand. 1) Sluggish response from the HMI screen - on the V570, when you touch a button to move to another screen, the response is instant. Even with a very large and complex program with PLC cycle times of 7-9ms, the screen jumps, button presses, and various animations are instantaneous. With the UniStream, I find the sluggish response to be a very significant issue. It can be a large fraction of a second between a button press and initiation of a screen change. This is particularly bad when I press an ASCII String function to enter text. It can be over a full second before the keyboard pops up. By the way, the Caps Lock on that keyboard does nothing that I can tell. 2) There is a LOT of stuttering when I create a simple animation using a list of images. On the V570, I run a routine with 10 images that I want to execute with about a 100ms delay between each image. It runs very smoothly and looks great. The exact same routine on the UniStream 7 stutters with several of the images being delayed by something unknown. This is with a PLC scan time of about 0.5ms. 3) If I have code with two buttons positioned near each other where I want one button to appear when the other button is pressed and the pressed button to disappear, what actually happens seems to vary dramatically. Sometimes the second button appears before the first one goes away, sometimes after (and it can be a half second or so!), but never at the same time. On the V570, this is undetectable by the eye - one button disappearing while the other appears at the exact same instant - every time. 4) Just as a test I set a Binary Image to be triggered by the 1 second system bit (i.e. it will be image 1 for .5s then image 2 for .5s). It is easily discernible to the naked eye that the images are not cycling at .5s intervals. It varies constantly, and while the average remains a 1 second cycle, each pulse does vary by quite a bit. My concern is that I'm comparing a V570 with a large and complex program with many HMI screens and lots of code to a UniStream 7 that is barely being taxed with very little code and very few screens - and the UniStream is comparing very unfavorably. What will happen when I have the full program developed? Is this sluggishness and stuttering going to be worse? Before I invest too much time in UniStream, I'd like to understand what the issue is. By the way, I'm using the latest version of UniLogic and have upgraded the UniStream 7 to the latest firmware. Not that this matters, but I am running a Windows 7-64 bit PC. Quote Link to comment Share on other sites More sharing options...
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