This version is considered legacy (general availability ended around 2021-2022). Siemens now recommends PCS 7 V10.x or the new SIMATIC PCS neo . Use this guide for maintenance of existing plants or specific OEM requirements.
PCS7 V9.1 Fequent Update Collections and Future SP3 - SiePortal Siemens Pcs7 V9.1 Sp2
SP2 improved the day-to-day life of automation engineers through smarter tools and more powerful libraries. SIMATIC PCS 7 - Distributed Control System - Siemens PCS7 V9
The V9.1 SP2 update of Siemens PCS 7 introduces several key features and improvements aimed at enhancing system performance, user experience, and integration capabilities: No need to learn a new tool
They had swapped the old S7-400 CPU with a new 1518-3 PN/DP controller. The transition was seamless because PCS 7 V9.1 SP2 allows the same engineering environment to target both the legacy 400 and the new 1500 series. No need to learn a new tool.
: Siemens has incorporated more sophisticated diagnostic tools and functionalities to simplify troubleshooting and maintenance. These tools help in identifying issues faster and in reducing downtime, which is critical for maintaining high productivity levels.