A Data Communication Protocol for Building Automation and Control Networks

Abstract

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 procedures and of deliberations within Standing Standard Project Committee 135.

The proposed changes are summarized below.

135-2016bu-1.

Introduce BACnetARRAY of BACnetLIST collection property data type, p. 3

135-2016bu-2.

Clarifications on character and value encoding issues, p. 14

135-2016bu-3.

Clarify transmission of unconfirmed COV notifications, p. 19

135-2016bu-4.

Clarify logging of event notifications, p. 20

135-2016bu-5.

Clarify recording of status events in log buffers, p. 21

135-2016bu-6.

Clarify Event Enrollment object reliability evaluation, p. 22

135-2016bu-7.

Clarify the Global Group object reliability evaluation, p. 23

In the following document, language to be added to existing clauses of ANSI/ASHRAE 135-2016 and Addenda is indicated through the use of italics, while deletions are indicated by.

Where entirely new subclauses are proposed to be added, plain type is used throughout.

Only this new and deleted text is open to comment at this time.

All other material in this document is provided for context only and is not open for public review comment except as it relates to the proposed changes.

The use of placeholders like X, Y, Z, X1, X2, N, NN, x, n, ?, etc., should not be interpreted as literal values of the final published version.

These placeholders will be assigned actual numbers/letters only after final publication approval of the addendum.