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.

135-2016br-1.

Add new engineering units, p. 3.

135-2016br-2.

Add mandate to accept writes of NULL to non-commandable properties, p. 4.

135-2016br-3.

Add intrinsic fault reporting to Lighting Output object type, p. 6.

135-2016br-4.

Deprecate Time form of timestamps, p. 10

135-2016br-5.

Clarify the Multi-state object types when Number_Of_States shrinks, p. 12

135-2016br-6.

Fix the language for event type and message text parameters of event notifications, p. 14

135-2016br-7.

Clarify the object instance 4194303, p. 16

135-2016br-8.

Wildcard instance for Network Port objects in ReadPropertyMultiple requests, p. 17

135-2016br-9.

Clarify the timestamp of trend log and trend log multiple log records, p. 18

In the following document, language to be added to existing clauses of ANSI/ASHRAE Standard 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 addendum 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 XX, YY, ZZ, X1, X2, 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