Local Area Lingo: A Turn-of-the-Century Controls Glossary


Control network : A collection of DDC microcontrollers distributed throughout a facility that use a control protocol and one or more network media to communicate.

Control protocol : An electronic language spoken between microcomputer-based DDC controllers to pass values and commands.

Direct-digital control (DDC): An automated control scheme using microcomputers connected to electronic sensors and actuators.

Distributed control : Automated control using microcomputer-based controllers distributed on a control network throughout a facility. Each microcontroller in a distributed system has local "intelligence" or logic capability and also communicates via a control protocol to other microcontrollers on a control network over one or more network media.

Gateway : A hardware or software device that translates from one control protocol to another.

Hierarchical control network : A method of building control networks where parent controllers manage small subnetworks with fixed numbers of controllers under a given parent device.

Media converter : A device used to move from one network media to another.

Microcontroller : A microcomputer with local logic capability as well as sensory input and actuator outputs used in a distributed control network .

Network media : The physical method of transmission of a control protocol . Examples include radio frequency, power-line carrier, infrared light and various wiring schemes such as Ethernet, twisted-pair and serial connections.

Parent controller : A logic device used in hierarchical control networks to manage a fixed number of smaller devices. Typical hierarchal implementations use this controller also as a gateway or media converter .

Peer-control network : A control network in which any device can communicate to any other device without the need to pass through a parent controller or gateway .

Plug-in : A small, device-specific software application or wizard provided by a manufacturer intended to add value to the product.

TCP/IP : The acronym for transmission-control protocol/Internet protocol, the common underlying protocol spoken by all devices and applications on the Internet.

Return to "Keeping Up with the Protocols .

No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
BIM coordination; MEP projects; NFPA 13; Data center Q&A; Networked lighting controls; 2017 Product of the Year finalists
Emergency lighting; NFPA 3 and 4; Integrated building systems; Smart lighting, HVAC design
Designing for energy efficiency; Understanding and applying NFPA 101 for mission critical facilities; Integrating commissioning and testing for fire alarm systems; Optimizing unitary pumping solutions
Tying a microgrid to the smart grid; Paralleling generator systems; Previewing NEC 2017 changes
Driving motor efficiency; Preventing Arc Flash in mission critical facilities; Integrating alternative power and existing electrical systems
Putting COPS into context; Designing medium-voltage electrical systems; Planning and designing resilient, efficient data centers; The nine steps of designing generator fuel systems
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Fire & Life Safety Engineer; Technip USA Inc.
click me