From OpenSCADAWiki
Using — runtime
In the runtime mode, in the main field of the element, there are displayed the parameter name, the regulator mode (only for the regulators) and the current value-variable of this parameter; which, depending on the presence of a violation, are displayed in the color style: labColorGood, labColorWarning, labColorAlarm; and in which value the image of the inquieted parameter may blink. At the hardware errors and non validity the data, the last value is grayed out and crossed out. In the tooltip the user may get the linked parameter description and its errors.