: Projects from older versions often must be converted to V13 SP1 before they can be opened in newer versions like V15.1 or V17.
Enhanced API stability for automated XML import/export of code blocks. siemens tia portal v13 sp1 update 4 better 2021
Users with older floating licenses can often run V13 without the recurring costs or upgrade fees associated with newer versions. Migration Path and Compatibility : Projects from older versions often must be
V13 SP1 relies on older legacy authentication protocols. Modern versions natively support advanced TLS-based communication and hardware-based certificates between the engineering station, HMI panels, and S7 controllers. 2. Multiuser Engineering siemens tia portal v13 sp1 update 4 better 2021
Upgrading software often forces you to upgrade old PLC firmware, which can sometimes brick older hardware chips, forcing unplanned capital expenditure.
Faster generation of block code for S7-1500 controllers.