Abstract: An environmental control system is configured to accept network variable outputs from a plurality of sources on a single network variable input and the update values are stored in a data structure for the computation of control variable values. The system includes a sink controller having a network variable input and a plurality of sources, each having at least one network variable output coupled to the network variable input of the sink controller. A data structure is provided so that update values from the sources may be stored in the structure with reference to the sources that provided the update values. Aggregate values, such as a mean average, minimum value, maximum value, standard deviation, variance, sum, or product may be computed from the values stored in the data structure.

Abstract: A controller for use in a building control system includes an input, an output, a processing circuit and a communication circuit. The input is operably connected to receive sensor information. The output is operably connected to communicate control information. The processing circuit is configured to generate the control information based on the sensor information and at least one set point. The processing circuit is further operable to generate web pages including one or more building control values. The communication circuit is operable to communicate the generated web pages to an external web client. The communication circuit is preferably further operable to communicate an executable program to the external web client. The executable program is configured to cause the external web client to automatically poll for updates to at least one of the one or more building control values.

Abstract: An environmental control system is configured to accept network variable outputs from a plurality of sources on a single network variable input and the update values are stored in a data structure for the computation of control variable values. The system includes a sink controller having a network variable input and a plurality of sources, each having at least one network variable output coupled to the network variable input of the sink controller. A data structure is provided so that update values from the sources may be stored in the structure with reference to the sources that provided the update values. Aggregate values, such as a mean average, minimum value, maximum value, standard deviation, variance, sum, or product may be computed from the values stored in the data structure.