Choosing the right TIA Portal V21 license depends on the type of Siemens PLC you're using. To make it easy, we've outlined the pricing options based on your PLC model—so you can quickly find the best fit for your application. Whether you're working with S7-1200, S7-1500, or other Siemens controllers, this guide will help you compare costs and select the right engineering software license for your needs.