: Provided stable support for S7-1200 CPUs (such as the 1214C) even when firmware versions differed slightly (e.g., using FW 4.1 configurations for FW 4.2 hardware). PLC Proxy Extensions
If you are working with this version in 2026, keep these technical "gotchas" in mind: Update for TIA Portal V13 SP1 - SiePortal - Siemens Tia Portal V13 Sp1 Update 4
Faster compilation times for S7-1500 controllers and optimized HMI screen loading. : Provided stable support for S7-1200 CPUs (such
Where to get Update 4 and official support Tia Portal V13 Sp1 Update 4