https://forge.codesys.com/forge/talk/CODESYS-V2/thread/ad3ae087b9/2022-07-11T06:52:18.218000ZRecent posts to VAR_IN_OUT2022-07-11T06:52:18.218000Z2022-07-11T06:52:18.218000Zsgronchihttps://forge.codesys.com/u/sgronchi/https://forge.codesys.com9675bdaf5f9f2c6e15f683671ad9383cc7839dcf

<div class="markdown_content"><p>You need to provide a variable (from the name I think an array of BOOLs) to the FB, that the block can then read or write. You pass it like you pass a VAR_INPUT, except the FB can change it.</p></div>

2022-07-06T09:20:43.698000Z2022-07-06T09:20:43.698000Zwordaxhttps://forge.codesys.com/u/wordax/https://forge.codesys.comad68757b5ab43b3d2c7bfb7cf9c9f7a392cd7a41

<div class="markdown_content"><p>Hello,<br/> I am asking help because I actually working on a lightning system control with DALI and a Wago PLC200 750-8210 on codesys V2.3. So, I am using the DALI_647_04 library and I have a problem with a VAR_IN_OUT variable. I didn't really understand of the meaning of these but I need them for some block like "FbDaliOperatingHours" or "FbSettingsControlGear". Whenever I put this variable and build my program, I obtain this error : "Error 4061 : PLC_PRG(6):"VAR_IN_OUT" parameter 'axSelet' of 'DALI' must be used. So if anyone know how to "setup" this kind of variable I will be glad to receive some help.</p></div>