Migration from TwinCAT 2
If you would like to migrate an existing TwinCAT 2 PLC project which uses one of the TCP/IP Server's PLC libraries, you need to perform some manual steps to ensure that the TwinCAT 3 PLC converter can process the TwinCAT 2 project file (*.pro). In TwinCAT 2, the Function TCP/IP Server is delivered with three PLC libraries:
- TcpIp.lib
- TcSocketHelper.lib
- TcSnmp.lib
By default, these library files are installed in C:\TwinCAT\Plc\Lib\. Depending on the library used in your PLC project, you need to copy the corresponding library file to C:\TwinCAT3\Components\Plc\Converter\Lib and then perform the following steps:
- 1. Open the TwinCAT Engineering.
- 2. Create a new TwinCAT 3 solution.
- 3. Right-click on the "PLC" node and select Add Existing Item in the context menu that opens.
- 4. In the Open dialog, select the file type "Plc 2.x Project Import (*.pro)", browse to the folder containing your TwinCAT 2 PLC project and select the corresponding.pro file and click Open.
- TwinCAT 3 starts the converter process and finally displays the converted PLC project under the “PLC“ node.
