Which products are affected?
ESP-DDS2-P (Global Drive PLC Developer Studio Professional V2.3.4.0)
What happens?
If the PLC target system of an existing DDS project is changed over to the Drive PLC V7.x PLC target system and if DDS is closed and opened again afterwards the following error message occurs:
Cannot find x of y libraries. Change library directory?
When clicking the <No> button the following message is indicated: Cannot load library xyz.lib. (Set path in Project>Options>Directories)
The path of the Project>Options>Directories dialog is correctly set to the Drive PLC V7.x target system.
The following error message occurs when compiling the DDS project: Error 3740: Unknown type xyz
The project cannot be loaded into the PLC target system.
When does the problem occur?
In the library directory of the Drive PLC V7.x target system there only exist libraries with a version designation in the library name (see also chapter 1.1.4). As a result, these libraries differ from the ones of the other PLC target systems. When changing over an existing DDS project to the Drive PLC V7.x target system, DDS cannot find the libraries which have been used in the previous target system due to the different library name.
Possible diagnostics?
Check in the Library manager (menu item Window>Library manager) if all libraries required for the project are added to the project.
Short-term measures/recommendations?
Add the missing libraries to the library manager of the DDS project changed over. Use the new libraries which are equipped with the version designation in the library name.
This function restriction has been eliminated with DDS version 2.3.6.0.
Evaluation:
After changing over the DDS project to the Drive PLC V7.x target system, DDS does not find anymore the libraries inserted in the project. The project cannot be transferred to the PLC target system anymore. The missing libraries are to be added to the project afterwards. The Drive PLC V7.x target system will only be available with DDS version V2.3.4.0. Therefore, this function restriction will occur rather rarely.
