Patent ID: 7761563
Filing Date: 2010-07-20
Classification: H04L

Abstract:
1. A method of determining a communication status of at least one BACnet device, comprising the steps of: monitoring communication of the at least one BACnet device on a local network bus; generating by a bus communication status server object an octet string containing information reflecting the communication status of the at least one BACnet device; transmitting the octet string upon a change of value (COV) of the octet string indicating a change in the communication status of at least one of the at least one BACnet device; receiving by a bus communication status client object the octet string; deciphering the octet string to determine the communication status of each of the at least one BACnet devices; providing the communication status of each of the at least one BACnet devices to at least one corresponding device communication status object; transmitting by the bus communication status client object a Who-Has service request identifying the local network bus; receiving by the bus communication status client object an I-Have service response identifying the bus communication status server object for the local network bus; and transmitting by the bus communication status client object a SubscribeCOV service request to the bus communication status server object.