John_R Posted September 11, 2020 Report Share Posted September 11, 2020 Hey All, Just had a strange experience while installing Remote Access onto a PC. Now this PC is one I use as my normal workstation, email/office/CAD/etc, but not my PLC stuff, but I do have an older version of Visilogic (9.8.31) installed that I use to get online to look at something in the plant without disturbing what I'm doing on my programming PC. Now I just finished a little project (a water meter using a Dwyer Ultrasonic Flowmeter, connected to a V350) that I was going to setup Remote Access for a manager to be able to remote into... So, just for testing purposes I decided to do an install of Remote Access on my workstation (yes, installed as admin). Install went ok, I opened Remote Access and added the PLC to the Favorites list (which already was populated with a half dozen PLCs from the Vision Install), but when I select this (or any) PLC from the list and click on the Get OPLC Information button, I get a warning message that "No PlC is currently selected in Connection-PC settings". If I open up Visilogic and try to check connection with any of these PLCs I get a similar message. My instincts are to do a good uninstall (RevoUninstaller) and start over, but thought I'd solicit opinions first. JohnR Quote Link to comment Share on other sites More sharing options...
MVP 2021 Joe Tauser Posted September 11, 2020 MVP 2021 Report Share Posted September 11, 2020 I don't know the mechanics of why, but often when one of the Unitronics programs starts throwing up errors I run the Visilogic Version Swapper for the same version I'm using and it fixes things. Give it a try. Joe T. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted September 11, 2020 MVP 2021 Report Share Posted September 11, 2020 4 minutes ago, Joe Tauser said: often when one of the Unitronics programs starts throwing up errors I run the Visilogic Version Swapper for the same version I'm using and it fixes things. Yep, that's the first thing I always try when the (all too frequent) weird errors start popping up. I also keep a copy of a known good installation for each VisiLogic version on a separate drive (the entire folder from the Programs Files (x86) folder) and copy over the one that's messed up. One of those two usually solves the problem quickly. Because I have that backup known good installation available, I NEVER have to uninstall/reinstall VisiLogic. Quote Link to comment Share on other sites More sharing options...
John_R Posted September 11, 2020 Author Report Share Posted September 11, 2020 43 minutes ago, Flex727 said: Yep, that's the first thing I always try Hmmm.... that didn't help, what's the second thing you try? Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted September 11, 2020 MVP 2021 Report Share Posted September 11, 2020 3 hours ago, John_R said: what's the second thing you try? 3 hours ago, Flex727 said: I also keep a copy of a known good installation for each VisiLogic version on a separate drive (the entire folder from the Programs Files (x86) folder) and copy over the one that's messed up. The problem is that requires advance preparation. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Joe Tauser Posted September 11, 2020 MVP 2021 Report Share Posted September 11, 2020 Is this Win 10? Did you install the latest version of Remote Access or a previous one? Joe T. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted September 11, 2020 MVP 2021 Report Share Posted September 11, 2020 JohnR, what you are describing is classic case of what I have banged on about before. I suggest you have a good read of this post/topic and fiddle with the .evb. http://forum.unitronics.com/topic/6478-connection-problem/?do=findComment&comment=26158 What I have found in the past is that the evb file for Remote Access doesn't actually relate that well to the one that is used by other programs. It seems to sort of stand alone in the way it works, even though it appears to reference the main one as well. I mentioned it in here: http://forum.unitronics.com/topic/4114-sd-card-explorer-to-remember-file-locations/?do=findComment&comment=27718 cheers, Aus Quote Link to comment Share on other sites More sharing options...
John_R Posted September 15, 2020 Author Report Share Posted September 15, 2020 On 9/11/2020 at 2:01 PM, Flex727 said: On 9/11/2020 at 10:14 AM, Flex727 said: I also keep a copy of a known good installation for each VisiLogic version on a separate drive (the entire folder from the Programs Files (x86) folder) and copy over the one that's messed up. The problem is that requires advance preparation. Yes Flex, I keep archived installs also... just seemed odd that it happened when I installed Remote Access On 9/11/2020 at 2:06 PM, Joe Tauser said: Is this Win 10? Did you install the latest version of Remote Access or a previous one? Yes, Win 10, and just downloaded the latest version from Unitronics website... On 9/11/2020 at 5:26 PM, Ausman said: JohnR, what you are describing is classic case of what I have banged on about before. I suggest you have a good read of this post/topic and fiddle with the .evb. http://forum.unitronics.com/topic/6478-connection-problem/?do=findComment&comment=26158 And the winner is.... Aus.....😌 Renamed the .evb file and created new, problem solved.... Thanks guys... Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted September 17, 2020 MVP 2021 Report Share Posted September 17, 2020 👍 cheers, Aus Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted December 26, 2021 MVP 2021 Report Share Posted December 26, 2021 Just for everyone's sake, I'm noting a recent instance of this behaviour I had. I use a little 2 in 1 for occasional "roaming" online access whilst on job sites. I cranked it up last week for the first time in months but found exactly the same messages John encountered......."No PLC is currently selected in Connection-PC settings". I could not understand how this had happened because the last time I used it everything was working correctly. Ponderings ..... 1). This 2 in 1 has an easily overlooked behaviour of taking a little while to fully shut down, as there is only one tiny led that is on during shutdown, and even that goes off before the unit is fully off. I have had instances where I have thought it was finished and have closed the lid, only to discover later that it had gone into sleep mode because of the lid action, and consequently run the battery flat. Sleep seems to work regardless of where it is in the shutdown process. Perhaps in doing this after Unitronics use, this somehow corrupts the evb file. I can't see how, as I have write caching disabled. But wait..... 2). By being a good boy and doing an occasional W10 update when I think it is needed, my favourite people at M$oft re-enabled write caching on the unit without telling me. They are very good at continually changing user settings to what they want, and it annoys me no end. (I'm using very polite language about this, the real thing is a stream of invective!) I did an update on the 2 in 1 about 6 months ago, and the caching must have turned on back then. I didn't do it! #$%H$# M$oft did. Ooops...rude language. 3). The possibility therefore exists that this issue might be related to incorrect shutdowns occurring with some info getting lost if caching is on. I have yet to explore the differences in the evb file itself b/n corrupted and ok. Perhaps I'll find that it isn't a corruption of the evb at all, but rather something happening within programs that reference the evb, and not being shutdown properly affects their use of the evb. I'll put further thoughts up when I get some time. cheers, Aus Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted December 27, 2021 MVP 2021 Report Share Posted December 27, 2021 In pursuing this a little, I have found contrasting info from various sources regarding sleep action and whether it forces a disk cache write prior to getting some zzzzz. Anyone here know about this for sure? cheers, Aus Quote Link to comment Share on other sites More sharing options...
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