https://forge.codesys.com/forge/talk/Engineering/thread/5c7c9bf8ab/2022-10-10T10:21:56.958000ZRecent posts to Table "Variable for selected row" becoming negative2022-10-10T10:21:56.958000Z2022-10-10T10:21:56.958000Zpbogaertshttps://forge.codesys.com/u/pbogaerts/https://forge.codesys.comb8d224d822ea8212ea52be8fe51e39b64b06929d

<div class="markdown_content"><p>Hi all,</p> <p>Seems to have found the reason of this issue:<br/> When deactivating the multitouch function in TwinCAT, the scrollbar appeared correctly on the target visu.<br/> Also the problem with the variable for the selected row was solved by doing so.</p> <p>Seems that this kind of target visu does not support multitouch functionality...</p></div>

2022-10-07T19:17:53.158000Z2022-10-07T19:17:53.158000Zpbogaertshttps://forge.codesys.com/u/pbogaerts/https://forge.codesys.comda017d9c9b3b29c09465012004cdc9bd4a27df7f

<div class="markdown_content"><p>Hi all,</p> <p>I am using a Beckhoff CX5140 PLC on TwinCat 3 and am facing some very strange behaviour regarding the visualisation of a table.</p> <p>The input data of this table is an array of 200 structs. I also receive the "Variable for selected row" in avariable, which I use in the PLC program to work with.<br/> When login in onto the PLC, everything looks fine and works fine when I look at the visualisation.</p> <p>But 2 problems arise when I use my HMI (TargetVisu):<br/> Firstly, the scroll bar itself is not being shown on the HMI?<br/> Secondly, when I press where the scroll bar is supposed to be, the "Variable for selected row" variable becomes -32768 (looks to an integer overflow to me?!). This is causing an out of boundaries exception, leading to a fatal error of the PLC.<br/> When scrolling on the Visu in TwinCAT, this problem is not there...</p> <p>Does someone can help me solving both problems?<br/> I do not understand why the visualisation on my TargetVisu is looking different than on my PC-Visu? Also, why does the "Variable for selected row" behaves differently on my HMI in comparison with the visu in TwinCAT. And why does this variable changes when using my TargetVisu when I only scroll down the list?</p> <p>All help is very welcome.<br/> Thanks a lot!</p></div>