What does 800xA stand for? Any logical reason for this name?
As mentioned above 800xA is eXtended Automation. The 800 is part of the series of S800, AC800M and so on. Extended Automation is not just a DCS but also allows for incorporation of systems like: traditional SCADA systems (Electrical control), Datacentres (with the Decathlon suite), CMMS integration, Alarm Management, Drive integration, plus more.