From OpenSCADAWiki
To enable the archiving of the attributes "Ti" and "To" of the AT101_1 and AT101_2 parameters in the previously created controller of the LogicLev module, it is enough on the "Archiving" tab of the configuration page to choose which attributes are to be archived and by what archivers (Fig.4.5.2). We'll choose the archiving of "Ti" and "To" attributes by the previously created archivers FSArch.1s, FSArch.1m, FSArch.1h. The same thing we do for the attribute "var" of the analog parameter ModBus.CM101.TE1314_1 and for "com" of the digital parameter ModBus.CM101.CB102.