COMMUNICATION PROTOCOL SYSTEM AND METHOD FOR A DISTRIBUTED-ARCHITECTURE HEATING, VENTILATION AND AIR CONDITIONING NETWORK
First Claim
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1. A method of manufacturing an HVAC data processing and communication network, comprising:
- coupling a first subnet controller and a second subnet controller via a data bus; and
configuring said first subnet controller to;
broadcast a startup message via said data bus after emerging from a reset state;
engage in arbitration with a second subnet controller on said network; and
self-configure to act as an active subnet controller or an inactive subnet controller based on said arbitration.
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Abstract
The disclosure provides an HVAC data processing and communication network and a method of manufacturing the same. In an embodiment the network includes a subnet controller and at least one demand unit. A bus interface device associated with the demand unit is configured to receive a demand message from the subnet controller over the network. The bus interface device controls an operation of said demand unit in response to said demand message.
163 Citations
27 Claims
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1. A method of manufacturing an HVAC data processing and communication network, comprising:
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coupling a first subnet controller and a second subnet controller via a data bus; and configuring said first subnet controller to; broadcast a startup message via said data bus after emerging from a reset state; engage in arbitration with a second subnet controller on said network; and self-configure to act as an active subnet controller or an inactive subnet controller based on said arbitration. - View Dependent Claims (2, 3, 7, 8, 10)
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4-6. -6. (canceled)
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9. (canceled)
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11. An HVAC data processing and communication network, comprising:
a first subnet controller coupled to said network via a data bus, and being configured to; broadcast a startup message via said data bus after emerging from a reset state; engage in arbitration with a second subnet controller on said network; and self-configure to act as an active subnet controller or an inactive subnet controller based on said arbitration. - View Dependent Claims (12, 13, 14, 17, 18, 19)
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15-16. -16. (canceled)
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20. (canceled)
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21. A first HVAC data processing and communication network subnet controller, comprising:
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a physical layer interface adapted to couple to a data bus of an HVAC data processing and communications network; and a local controller configured to; broadcast a startup message via said data bus after emerging from a reset state; engage in arbitration with a second HVAC data processing and communication network subnet controller on said network; and self-configure to act as an active subnet controller or an inactive subnet controller based on said arbitration. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification