The On-Off Control block uses contact inputs to implement on-off control based on an analog value. For example, as the following figure shows, the High Contact Data fields can open a valve to add hot water to a tank when the temperature reading falls below a specified value. In turn, the block can turn off the hot water when the temperature reaches a specified value.
In addition, the Low Contact Data fields can trigger a cold water valve to close when the temperature falls below a specified value and to open when the reading rises above the value.
