Cascaded References: Referenced Libraries in Released IEC Libraries
If a project which includes a library reference is in turn released as library, the resulting library still contains its library reference. This is called a cascaded reference.
On releasing, the path to the included (cascaded) reference is deleted. Instead, the cascaded library file within the released library is expected in the same folder as the released library.
| Note
Always store each library file (*.pcwlx) in the 'Libraries' folder. This way, cascaded references within released libraries can always be found. |
When creating a released IEC library, PLCnext Engineer ensures that the visibility setting of objects which are contained in cascaded references is consistent. For example, if you try to release a visible POU as library which in turn calls an invisible FB from a cascaded library, PLCnext Engineer reports an error. You have to specify consistent visibility settings throughout the cascaded references.