Siemens Schweiz Ag

Siemens Industry, Inc.

William Choi

Gerhard Brun

Andreas Schlumberger

James Joseph Coogan

Robert L Johnson

Scott Allan Pearson

Thomas Evans

Anthony J Bednaroski

Timothy Stevens

A controller of a building automation system comprising a communication component and a processor, and a method thereof. The communication component communicates with one or more other controllers of multiple automation level devices. The automation level devices are associated with an automation level network of the building automation system. The automation level devices include the controller and the other controller(s). The processor performs name resolution in which names of objects for devices associated with a building automation system are synchronized by device object references.

Control device for a building automation system having name resolution management

A building automation system and method is provided for isolating device communications in a BACnet/IP building automation network. The system may comprise at least one processor in a BACnet device configured via executable instructions included in at least one memory to communicate UDP messages for field devices onto an Ethernet network for receipt by at least one other BACnet device on the Ethernet network. The at least one processor may be configured to receive and store in a memory a configurable local subnet, a BACnet/IP UDP port, and a local UDP port. The at least one processor may also be configured to determine a UDP message that is to be broadcast only on the local subnet. In addition, the at least one processor may be responsive to the determination, to broadcast the UDP message to BACnet devices on the same local subnet using the local UDP port stored in the memory.

System and method for isolating device communications in a BACnet/IP building automation network

A system and method is provided for stabilizing a BACnet MSTP network when failures occur. The system may include at least one processor in an MSTP device configured via executable instructions included in at least one memory to communicate data expecting reply (DER) messages for field devices (e.g., HVAC, lighting, shading) onto an MSTP network for receipt by at least one IP device on an Ethernet network connected to the MSTP network via a BACnet IP/MSTP router. The processor may be configured to determine when the at least one IP device sent a DER message has become a non-communicative device. Also the processor may be configured to send a Poll for Master (PFM) message to the determined non-communicative device. In addition, the processor may be configured to drop further DER messages to the determined non-communicative device responsive to an absence of receipt of a response to the PFM message.

System and method for stabilizing a BACnet MSTP network when failures occur

A system is provided for communicating common data associated with building automation objects between building automation devices across a network. The common data corresponds to a group of one or more building automation objects representing points associated with a plurality of field devices controlled or monitored in a building by the building automation devices. The system comprises a first building automation device having a group master object that includes a group identifier. A second building automation device includes a group member object having the same group identifier as the group master object. The group master object exchanges the common data to each of the building automation devices having a group member object that has the same group identifier as the group master object.

System, method and apparatus for grouping building automation objects for group communication within a building automation system

A network asset manager is provided that comprises a network interface coupled to a processor and a memory that broadcasts a first 'Start Discovery' message. The 'Start Discovery' message instructs unconfigured devices in an EIA-485 network to generate random number identifiers within a predetermined range and results in receipt of a &#x201c;I Have Random ID&#x201d; message from at least one of the unconfigured devices with a specific random number identifier associated with the at least one of the unconfigured devices. Receipt of the &#x201c;I Have Random ID&#x201d; message results in a broadcast message from the network interface to at least one of the unconfigured devices using the specific random number identifier.

Growing community of inventors

Lake Zurich, IL, United States of America

William Choi