DDC Online direct digital controls
TAC - Vista  

System Architecture

Date Last Saved: 4/4/2006 2:54:56 PM

This section distinguishes between Operator Interfaces and Field Interfaces to the BAS. The Operator Interface refers to the main 'front-end' method for accessing and operating the BAS. The Field Interfaces typically access the BAS from the controller-level and have limited functionality, and may include HID, LDP, and ZBI as described below. This section describes the devices only; OI functionality is generally covered in the Software, while Field Interface functionality is detailed further in the individual Controllers
Operator Interfaces (OI)
Dedicated Operator Workstation (OWS)
Dedicated PC(s) with proprietary workstation software
TAC Vista Workstation
"Thin" Client Browser No
"Thick" Client Browser Web access requires that the network have TAC Vista software running on a PC on the IP network
Product Application(s): N.A.
Handheld Interface Devices (HID)
PDA-Based Information not provided
Proprietary Information not provided
Local Display Panel (LDP) Information not provided
Zone Based Interfaces (ZBI)
Thermostat with communication port to access local controller/network yes
Other thermostat types available (without communication ports)
Interface to BAS Networks Information not provided
Compatible with the building's IT network? Yes
Protocol(s) LONTalk
Cabling and Speeds 78.6 kbps
Expansion Capability Information not provided
Additional Information
Peer-to-Peer or Polling? N.A.
Protocol(s) N.A.
Cabling and Speeds N.A.
Expansion Capability N.A.
Additional Information
Includes a listing of available Gateways, Routers and other devices that provide additional communications flexibility into and out of the BAS. Repeaters, bridges, standard modems and the like are typically not included here. Note: If in use by the BAS, the Internet/building IT Network is extremely open and non-proprietary. If a vendor uses the IT Network, CI devices such as IP routers and hubs can be purchased from third parties.
Model (Device) Application
Model (Device) Xenta 511
Application The Xenta 511 is a Web-based presentation system for LonWorks Networks. Using a standard web-browser with TAC Webstation Client software, the operator can view and control devices in the TAC Vista LonWorks network via the Internet or local intranet.
Classification Web Server
between
Lon
and
IT Network
Additional Information
Model (Device) Application
Model (Device) Xenta 901
Application TAC Xenta 901 is a serial LonTalk adapter designed to connect TAC Vista to the LonWorks network through a dial-up connection. Dial up can be initiated by TAC Vista of the TAC Xenta 901.
Classification gateway
between
LonWorks
and
TAC Vista
Additional Information
Model (Device) Application
Model (Device) Xenta 911
Application TAC Xenta 911 can be configured in two ways. It can be a LonTalk adapter between TAC Vista and the LonWorks network. It can also be used as an IP modem with TAC units supporting dial up.
Classification gateway
between
LonWorks
and
IP
Additional Information