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A significant issue reported on automation forums involves the M221 PLC no longer being recognized by the HMI after upgrading to V6.2 SP12. Specifically, the screen functions, but the HMI fails to communicate with the "Dialogue Table," which prevents trends from being captured and the Real-Time Clock (RTC) data from being retrieved. Users have had to investigate the "Authorisation Word" settings in the PLC to resolve this. vijeo designer 6.2 sp12 hotfix
Deploying the correct hotfix for Vijeo Designer 6.2 SP12 ensures maximum system uptime, reliable industrial communication, and hardened cybersecurity for operational technology (OT) environments. The Role of Vijeo Designer Hotfixes This public link is valid for 7 days