If you cannot afford TIA Portal:

The search for (downloading TIA Portal V16 with a free license) sits at the intersection of professional engineering needs and the ethical complexities of software licensing. In the world of industrial automation, Siemens’ Totally Integrated Automation (TIA) Portal is the gold standard, but its high entry cost often leads users to seek "free" alternatives. The Professional Reality vs. The "Free" Myth

https://support.industry.siemens.com/cs/document/109752768

Leo stared at the blinking red light on his laptop. As a junior automation student, he knew that was the "Ferrari" of industrial software—it controlled everything from car assembly lines to chocolate factories. But the price of a professional license was more than his entire tuition.