DDC Online direct digital controls
Distech Controls - EC-Net Solution  

System Architecture

Date Last Saved: 11/6/2015 4:20:51 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
Critical real time applications run on Wind River's VxWorks RTOS. Other operating systems include Microsoft WindoewsNT, Linux, or UNIX.
"Thin" Client Browser The EC-BOS utilizes enterprise-level software standards such as Java, TCP/IP, HTTP, and XML, to allow access to your system via any standard web browser.
"Thick" Client Browser N.A.
Product Application(s): N.A.
Handheld Interface Devices (HID)
PDA-Based N.A.
Proprietary N.A.
Local Display Panel (LDP) The Easycontrols EC-Display is a multi-function LCD display equipped with a 3150 Neuron processor. The EC-Display is based on the LonWorks system and can interface with up to 250 variables.
Zone Based Interfaces (ZBI)
Thermostat with communication port to access local controller/network The EC-STAT is specifically designed for single stage and multistage control of heating/cooling equipment such as rooftop and heat pump units. It is based on the LonWorks protocol.
Other thermostat types available (without communication ports)
Interface to BAS Networks The EC-NET solution uses the EC-BOS powered by the Niagara framework to connect LonWorks, BACnet, Modbus, and legacy systems to the Internet / IT network.
Compatible with the building's IT network? Yes, see above
Protocol(s) LonWorks, BACnet, Modbus, and other proprietary/legacy systems.
Cabling and Speeds Twisted pair @ 78.6 Kbps
Expansion Capability 127 controllers on a segment 30,000 controllers in entire system
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) EC-BOS
Application The EC-BOS is a web enabled device that is powered by the Niagara Framework for control and communication of embedded devices.
Classification Gateway
Primary (BACnet, LonWorks, Modbus, and legacy protocols)
Internet / IT
Additional Information