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ASHRAE STD 135

BACnet - A Data Communication Protocol for Building Automation and Control Networks

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Organization: ASHRAE
Publication Date: 1 January 2020
Status: active
Page Count: 1,434
scope:

This protocol provides a comprehensive set of messages for conveying encoded binary, analog, and alphanumeric data between devices including, but not limited to:

(a) hardware binary input and output values,

(b) hardware analog input and output values,

(c) software binary and analog values,

(d) text string values,

(e) schedule information,

(f) alarm and event information,

(g) files, and

(h) control logic.

This protocol models each building automation and control computer as a collection of data structures called "objects," the properties of which represent various aspects of the hardware, software, and operation of the device. These objects provide a means of identifying and accessing information without requiring knowledge of the details of the device's internal design or configuration.

PURPOSE

The purpose of this standard is to define data communication services and protocols for computer equipment used for monitoring and control of HVAC&R and other building systems and to define, in addition, an abstract, object-oriented representation of information communicated between such equipment, thereby facilitating the application and use of digital control technology in buildings.

Document History

June 18, 2021
A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
April 23, 2021
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
April 23, 2021
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
March 26, 2021
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
March 26, 2021
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
March 26, 2021
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
March 26, 2021
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
March 26, 2021
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
July 6, 2020
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
July 6, 2020
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
July 6, 2020
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
July 6, 2020
A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
June 16, 2020
A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
February 5, 2020
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
February 1, 2020
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
February 1, 2020
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
February 1, 2020
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
February 1, 2020
A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
ASHRAE STD 135
January 1, 2020
BACnet - A Data Communication Protocol for Building Automation and Control Networks
This protocol provides a comprehensive set of messages for conveying encoded binary, analog, and alphanumeric data between devices including, but not limited to: (a) hardware binary input and output...
November 18, 2019
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
November 18, 2019
BACnet - A Data Communication Protocol for Building Automation and Control Networks
FOREWORD The purpose of this addendum is to present a proposed change for public review. These modifications are the result of change proposals made pursuant to the ASHRAE continuous maintenance...
November 18, 2019
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
November 1, 2019
A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
October 30, 2019
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.
October 30, 2019
BACnet - A Data Communication Protocol for Building Automation and Control Networks
A description is not available for this item.

References

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