Tia Portal V13 Sp1 Update 4 Jun 2026

For engineers designing user interfaces, Update 4 brings essential fixes to the WinCC runtime environment:

: PLCSIM became more reliable for testing smaller programs, though users noted it could still be a heavy load on the first CPU thread. Essential Context for Today Tia Portal V13 Sp1 Update 4

Resolves intermittent connection drops between WinCC Runtime and older firmware controllers. Engineering Workflow Enhancements For engineers designing user interfaces, Update 4 brings

To "prepare paper" (a machine translation of "Prepare for Reset") in , you are likely performing a factory reset on a SIMATIC HMI (Mobile Panel 2nd Generation) or similar operator device. 1. Understanding the Command Critical Technical Notes Project Upgrades

This refers to a specific older version of Siemens' engineering framework, Totally Integrated Automation Portal.

: This update included reserved system updates (Updates 1-3) for the Openness API that were not previously available to standard users. Critical Technical Notes Project Upgrades