DDC Online direct digital controls
Control Pak - EM Solution  

System Architecture

Date Last Saved: 5/20/2004 7:44:46 AM

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 Internet Explorer, Netscape Navigator
"Thick" Client Browser N.A.
Product Application(s): N.A.
Handheld Interface Devices (HID)
PDA-Based None
Proprietary Remote Terminal Unit (RTU) for set-up, edit, override, and monitoring functions
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? Information not provided
Protocol(s) Proprietary, peer-to-peer token passing
Cabling and Speeds EIA-485 @ 9.6 Kbps
Expansion Capability LAN capacity: 126 controllers Unlimited number of LANs possible
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) WS Client
Application Web Server
Classification Communication Interface
Primary Network
Additional Information