Interior time-of-day timetable – the user configures a routine that says to the control when you should change the design or arrange, using the day’s the week and period of the time. The controller’s clock, which will keep an eye on date, day of month, and opportunity, is regularly compared to the records during the routine. No outside communications are required. This procedure is sometimes put as a backup when an external routine variety process fails. This method is normally used.
Hardwire interconnect – several electrical wires (typically seven) setup amongst the controller and a master device, have a reliable current applied or got rid of to indicate which routine or plan will be made use of. Whenever mixture of productive (voltage on) and inactive (voltage off) cable variations, the combination can be used of the control to appear right up which design or decide to change to. Use of this technique was declining.
Outside demand – utilizing digital communications (typically via a serial or Ethernet port from the controller), a master product or computers directs a demand information for the controller, instructing they to improve to a specific routine. This process is usually used. If the control will lose communications using source of pattern directions, could automatically return to using its internal time-of-day pattern collection timetable. Similar marketing and sales communications hyperlink is typically regularly obtain position info from the operator, and to make it possible for isolated variations to controller variables.