This is where you can manually add or import custom Siemens elements downloaded from community forums or official repositories.
Siemens, a leading manufacturer of industrial automation and process control systems, has implemented the IEC 61804 library in its products. The Siemens Library provides a comprehensive set of function blocks and data types that are compatible with the IEC 61804 standard. The library is designed to facilitate communication between Siemens devices and systems, as well as with devices and systems from other manufacturers that also support the IEC 61804 standard. i--- Qelectrotech Siemens Library -