https://forge.codesys.com/forge/talk/Engineering/thread/f3429e9fcc/2020-02-27T14:39:29.403000ZRecent posts to opc server loads old symbols2020-02-27T14:39:29.403000Z2020-02-27T14:39:29.403000Ztimvhhttps://forge.codesys.com/u/timvh/https://forge.codesys.comf86db74f680d69308c9a72874ed909eaabb29152

<div class="markdown_content"><p>I think you are mixing up things.<br/> Once you create an application and set the option to create a symbol file you have the option to download the symbol file to the PLC or not. If it is downloaded the OPC server retrieves this from the PLC.<br/> CoDeSys will (also) create the .sdb file and puts this in the gateway folder when the application is downloaded.<br/> The OPC server checks which project is in the PLC and checks if this .sdb file is in the gateway folder.<br/> This is (in my experience) only done when the (boot) application is downloaded to the PLC.</p> <p>By just updating something in the gateway settings doesn't update the .sdb file which the OPC server uses.</p></div>

2020-02-27T14:39:28.916000Z2020-02-27T14:39:28.916000Zefra-mxhttps://forge.codesys.com/u/efra-mx/https://forge.codesys.com7371b323ba34cd5c571fbcb9c85f9038a4785ee3

<div class="markdown_content"><p>I need help with this issue!!<br/> please</p></div>

2020-02-27T14:39:28.418000Z2020-02-27T14:39:28.418000Zefra-mxhttps://forge.codesys.com/u/efra-mx/https://forge.codesys.com344dae17ccbec1abae808196faa82b60057e6ed0

<div class="markdown_content"><p>Sometimes Codesys uses the symbols from an old project, and doesnt copies the files to c:\windows\gateway files\<br/> Procedure:</p> <p>open projectA,<br/> configure communication setting (erase everything, and i press update). Here you will see projectA.pro<br/> open project B (copied project)<br/> re-build everything<br/> configure communication setting (erase everything, and i press update). Here you will still see projectA.pro</p> <p>any idea??</p> <p>how can i fix that? it is getting really annoying</p></div>