There are two types of Opera formulas: the conditional formulas and the standard formulas.

The standard formula comprises only a single setpoint control rule, which remains unchanged across various occasions.

Figure 1. A standard formula

Figure 1. A standard formula

The conditional formulas encompass various scenarios and adjust the setpoint value based on triggering events. There are toggle arrows within the formula to illustrate different cases in their control logic.

Figure 2. A conditional formula

Figure 2. A conditional formula

You can click on each arrow individually to access the details of each cases. To view the complete control logic, click on Show all located at the bottom of the setpoint's formula.

Figure 3. Show all and Hide all buttons

Figure 3. Show all and Hide all buttons

In this instance, the control logic comprises three cases, each represented by a toggle arrow. Each case includes:

  1. A condition or event triggering the modification, indicated after the prefix IF.
  2. The new setpoint value applied when the condition(s) occur, detailed after the - Set to: section.

Figure 4. Components of a conditional formula

Figure 4. Components of a conditional formula

Conditional formulas can also be built based on time periods, for more information refer to Period configuration.

For an explanation of the color-coding used in Opera formula elements, please consult ‣