If you are still using a 32-bit tool to access data at DB40.DBW40 or any address offset 40, you are facing several bottlenecks:
To work with S7-1200 CPUs running firmware V4.0 or higher, you typically need TIA Portal V13 or later . For the best experience, Siemens SiePortal recommends using the latest versions like V17, V18, or V19. TIA Selection Tool: S7 1200 Tool 64 Bit 40
If you are still using a 32-bit tool to access data at DB40.DBW40 or any address offset 40, you are facing several bottlenecks:
To work with S7-1200 CPUs running firmware V4.0 or higher, you typically need TIA Portal V13 or later . For the best experience, Siemens SiePortal recommends using the latest versions like V17, V18, or V19. TIA Selection Tool: