This version includes fixes for PROFINET discovery and configuration vulnerabilities identified in earlier releases. Siemens SiePortal Installation and Setup Preparation:

Still stuck? Siemens also provides a “SINEC PNI” tool for newer networks, but for reliability and zero bloat, PST 4.2 is my go-to.

Siemens typically distributes the PST as a free utility, though its availability on the public internet has shifted over time in favor of newer tools.

: It is specifically compatible with SCALANCE X, W, and S series, as well as certain ET 200 modules and SIMATIC S7 CPs. Download and Availability

to scan for connected "Intelligent Network Components" (INCs). Select the device by its MAC address (found on the physical hardware label). Enter the desired IP Address Subnet Mask , then apply the settings via Module → Download