Those who are familiar with the Ac800F system: after the controller loses power and is restarted, the trend data on the operation station is lost. Seeking help
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One station lost power; the UPS and backup batteries did not function, and the program was lost. After reloading the process station program, when the operation station attempted to retrieve the trend data, it was found that all variables on this station could only be read for the last 8 hours prior to power loss, and their values were always 0; the trend data was normal after power was restored.
The trend server is running properly, and other stations are also able to retrieve trends without any issues. The system version is freelance2000 v9
Learn a bit: when a trend is lost, it means the trend data is no longer available, or there is no connection to it.
Will a power loss of the controller also affect the trend server?
There’s basically no suspense – the controller’s time has returned to its original value. After CBF goes online, there is a menu with an option; under it there is a sub-menu for changing the time – just set the controller’s time to the local computer’s time