DDC Online direct digital controls
Control Pak - EM Turbo  

System Architecture

Date Last Saved: 5/21/2004 3:11:06 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
PC with ManagePAK software
"Thin" Client Browser
"Thick" Client Browser
Product Application(s): N.A.
Handheld Interface Devices (HID)
PDA-Based Remote Terminal Unit (RTU) for set-up, edit, override, and monitoring functions
Proprietary None
Local Display Panel (LDP) Optional: Remote Annunciator Unit (RAU) for status and alarm indication Optional: Remote Command Unit (RCU) for on/off or override actions Optional: Remote Setpoint Unit (RSU) for setpoint display
Zone Based Interfaces (ZBI)
Thermostat with communication port to access local controller/network No
Other thermostat types available (without communication ports)
Interface to BAS Networks The OWS can use IP protocol to communicate with the control network. Additionally a thin client can be used to interface to network.
Compatible with the building's IT network? Not applicable-No primany network
Protocol(s) Not applicable-No primany network
Cabling and Speeds Not applicable-No primany network
Expansion Capability Not applicable-No primany network
Additional Information
Peer-to-Peer or Polling? Peer-to-peer token passing
Protocol(s) Proprietary
Cabling and Speeds EIA-485 @ 9.6 Kbps
Expansion Capability LAN capacity: 126 controllers Unlimited number of LANs possible
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.