Interpretations

Interpretation Requests (IR) are requests to the BACnet committee (SSPC) to better explain what is meant by certain wording in the standard. These requests for official interpretations can be for Standards 135, the original BACnet Standard as well as 135.1, the BACnet Companion Standard (Testing). An “Interpretation” is “The written explanation of the meaning of specific provisions of a standard or guideline, as determined by the IC [Interpretations Committee] or the PC [Project Committee, i.e., SSPC 135] in response to an IR.”

Please find below all the various interpretations as downloadable PDF files sorted by the issued official Standard version with its correlating year, and then sorted by issue date and version:

Interpretations of ASHRAE 135.1-2019 – The BACnet Companion Standard

Interpretations of ASHRAE 135.1-2019

Interpretation 135.1-2019-1 – July 6, 2020

Refers to the requirements presented in ANSI/ASHRAE Standard 135.1-2013, Clause 13.5.3,

  • Regarding slave proxy functionality.

Interpretations to ASHRAE 135 – The Original BACnet Standard

Interpretations of ASHRAE 135-2016

Interpretation 135-2016-28 – July 6, 2020

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56.13

  • Regarding Changes_Pending.

Interpretation 135-2016-27 – July 6, 2020

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016 Addendum bi,

  • Regarding the specified type of the Member_Of property.

Interpretation 135-2016-26 – July 6, 2020

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016,

  • Regarding the ability to read property values.

Interpretation 135-2016-25 – February 1, 2020

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56.11,

  • Regarding Network_Number.

Interpretation 135-2016-24 – February 1, 2020

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.57,

  • Regarding writing when State_Change_Values intends to relinquish on all transitions from RUNNING.

Interpretation 135-2016-23 – February 1, 2020

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56 and Table 12.71,

  • Regarding the presence of optional properties.

Interpretation 135-2016-22 – January 14, 2019

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Addendum bl, Clause 12.18.10,

  • Regarding Multi-state Input object when the Out_Of_Service property is TRUE and the resulting requirements of the Reliability and Status_Flags properties and the fault algorithm.

Interpretation 135-2016-21 – October 30, 2019

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 13.3.1,

  • Regarding BITSTRING Object.

Interpretation 135-2016-20 – October 30, 2019

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clauses 5.2.1.2, 9.7.1 and 19.4,

  • Regarding the requirements for devices to know the Maximum Conveyable APDU to remote networks.

Interpretation 135-2016-19 – October 30, 2019

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56,

  • Regarding activating changes.

Interpretation 135-2016-18 – June 20, 2019

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clauses 13.1 and 13.15.1.1.6,

  • Regarding COV_Increment for numeric properties.

Interpretation 135-2016-17 – June 20, 2019

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56 and Tables 12.71 and 12.72,

  • Regarding Required vs Optional properties of the Network Port object type.

Interpretation 135-2016-16 – June 20, 2019 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause K.1.12,

  • Regarding devices claiming conformance to DS-COV-B.

Interpretation 135-2016-15 – June 20, 2019

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clauses 13.2.2.1 and 13.3,

  • Regarding Transitions out of FAULT while an OFFNORMAL condition exists.

Interpretation 135-2016-14 – April 12, 2019

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 13.15.1.1.6,

  • Regarding the COV Increment parameter of the SubscribeCOVProperty service.

Interpretation 135-2016-13 – April 10, 2019

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Figure 6-12,

  • Regarding router discovery.

Interpretation 135-2016-12 – July 11, 2018

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.3.12,

  • Regarding Present_Value property.

Interpretation 135-2016-11 – April 17, 2018

Refers to the requirements presented in Clauses K and L,

  • Regarding BIBBs and Device Profiles and how they relate to protocol revisions.

Interpretation 135-2016-10 – April 17, 2018

Refers to the requirements presented in Clause L.7 Miscellaneous Profiles,

  • Regarding B-BBMD, B-RTR, DS-WP-B, and WriteProperty Execution.

Interpretation 135-2016-9 – October 24, 2017

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause K.2.4 AE-ACK-A, and Clause K.2.2 AE-N-I-B,

  • Regarding date and time synchronization requirements.

Interpretation 135-2016-8 – October 24, 2017

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016,

  • Regarding adding properties from future protocol revisions.

Interpretation 135-2016-7 – October 24, 2017

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 16.1,

  • Regarding DeviceCommunicationControl for BACnet Router.

Interpretation 135-2016-6 – October 24, 2017

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016,

  • Regarding the exact meaning of some defined units in the BACnet standard.

Interpretation 135-2016-5 – October 24, 2017

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.12.21,

  • Regarding Event Enrollment Reliability property.

Interpretation 135-2016-4 – June 26, 2017

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause W.5.3

  • Regarding the .auth Data Item: the format of public keys.

Interpretation 135-2016-3 – June 26, 2017

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clauses H.2.2.1 Offline Devices and H.2.3.2 Offline Devices.

  • Regarding consistent BACnet gateway behavior for offline devices.

Interpretation 135-2016-2 – October 25, 2016

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 13.3.6,

  • Regarding the direct transitions.

Interpretation 135-2016-1 – July 21, 2016

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56,

  • Regarding the Network Port object.
Interpretations of ASHRAE 135-2012

Interpretation 135-2012-20 – April 19, 2016

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2012, Clause 12.11.39,

  • Regarding Optionality of COV_Increment in Active_COV_Subscriptions.)

Interpretation 135-2012-19 – November 4, 2015

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2012, Clauses 12.12.8, 15.3.1.3.1, 15.9.1.3.1 and 15.10.1.3.1,

  • Regarding error returned to a CreateObject service.

Interpretation 135-2012-18 – November 4, 2015

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2012, Clause 13.14,

  • Regarding SubscribeCOV service with indefinite lifetime.

Interpretation 135-2012-17 – April 30, 2015

Refers to the requirements presented in ANSI/ASHRAE 135-2012, Clauses 12.25.14, 12.30.19, and 21 (BACnetLogData and BACnetLogRecord),

  • Relating to trending.

Interpretation 135-2012-16 – April 30, 2015

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2012, Clause 13.7,

  • regarding UnconfirmedCOVNotification Service, K1-11 BIBB DS-COV-A.

Interpretation 135-2012-15 – January 24, 2015

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2012, Clause 15.8,

  • Regarding ReadRange Service, by position with negative count.

Interpretation 135-2012-14 – January 24, 2015

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2012, Clause 19.1.3.3,

  • Regarding restoring the configuration files.

Interpretation 135-2012-13 – January 24, 2015

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2012, Clause 19.1.3.3,

  • Regarding file objects using record-access.

Interpretation 135-2012-12 – April 9, 2014

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2012, Clause 5,

  • Regarding all Property MaxSegmentsAccepted, Client State Machine.

Interpretation 135-2012-11 – January 18, 2014

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2012, Clause 12.25.14,

  • Regarding all logging objects (TL, TLM, EL).

Interpretation 135-2012-10 – January 18, 2014

Refers to the requirements presented in ANSI/ASHRAE 135-2012, Clause 15.8.2,

  • Relating to ReadRange executed with a Range parameter of ‘byTime’.

Interpretation 135-2012-9 – November 6, 2013

Refers to the requirements presented in ANSI/ASHRAE 135-2012, Clause 12,

  • Relating to the execution of alarming, related messages containing timestamps with wildcards.

Interpretation 135-2012-8 – November 6, 2013

Refers to the requirements presented in ANSI/ASHRAE 135-2012, Clauses 12.18.10 and 13.4.5,

  • Relating to the correct value of reliability when OutOfService.

Interpretation 135-2012-7 – November 6, 2013

Refers to the requirements presented in ANSI/ASHRAE 135-2012, Clause 15.10.1.3 and 15.10.2,

  • Relating to error handling of WritePropertyMultiple Service.

Interpretation 135-2012-6 – November 6, 2013

Refers to the requirements presented in ANSI/ASHRAE 135-2012, Clause 12.9.6,

  • Relating to the behavior of the Present_Value in a Calendar when the Date_List contains a specific day-of-week, and any of the special third octet values.

Interpretation 135-2012-5 – June 22, 2013

Refers to ANSI/ASHRAE Standard 135-2012, Clauses 12.4.9, 12.8.9 and 12.20.9,

  • Regarding the Out_Of_Service property.

Interpretation 135-2012-4 – June 22, 2013

Refers to the requirements presented in ANSI/ASHRAE 135-2012, Clause 12.25.10,

  • Relating to details on client behavior for retrieving external property values by COV or polling.

Interpretation 135-2012-3 – June 22, 2013

Refers to the requirements presented in ANSI/ASHRAE 135-2012, Clause K.5.23,

  • Relating to BBIB Device Management-Object Creation and Deletion-A (DM-OCD-A).

Interpretation 135-2012-2 – June 22, 2013

Refers to ANSI/ASHRAE Standard 135-2012, Clause 19,

  • Regarding the Command Prioritization.

Interpretation 135-2012-1 – May 9, 2013

Refers to the requirements presented in ANSI/ASHRAE 135-2012, Clause 12.25.14,

  • Relating to recording time-change events in trend log log buffer.
Interpretations of ASHRAE 135-2010

Interpretation 135-2010-14 – May 9, 2013

Refers to ANSI/ASHRAE Standard 135-2010, Clauses 12.4.9, 12.8.9 and 12.20.9,

  • Regarding the Out_Of_Service property.

Interpretation 135-2010-13 – January 26, 2013

Refers to the requirements presented in ANSI/ASHRAE 135-2010af-31, Clause 12.X,

  • Relating to the behavior of the AckRequired Boolean in ConfirmedEventNotification and UnconfirmedEventNotification requests.

Interpretation 135-2010-12 – January 26, 2013

Refers to ANSI/ASHRAE Standard 135-2010, Clause 12,

  • Regarding the Object_Identifier property and the instance number 4194303.

Interpretation 135-2010-11 – November 7, 2012

Refers to standard ANSI/ASHRAE 135-2010, Clause 12.11.19, “Segmentation_Supported”, and Clause 12.11.20, “Max_Segments_Accepted”, both on page 199.

Interpretation 135-2010-10 – November 7, 2012

Refers to the requirements presented in ANSI/ASHRAE 135-2010, Clauses 12.25 Preamble and 12.27 Preamble and 12.30 Preamble,

  • Relating to the behavior of the property Total_Record_Count of logging objects.

Interpretation 135-2010-9 – November 7, 2012

Refers to the requirements presented in ANSI/ASHRAE 135-2010, Clauses 15.1.1.4.1.2, 15.1.1.4.2.2, 15.1.1.4.3.2, and 15.8.2,

  • Relating to the content of ReadRange-ACK when MORE_ITEMS is true, and the Count in the ReadRange-Request was negative.

Interpretation 135-2010-8 – November 7, 2012

Refers to the requirements presented in ANSI/ASHRAE 135-2010, Clause 12.24.4 and 12.24.6,

  • Relating to the behavior of the property.

Interpretation 135-2010-7 – June 13, 2012

Refers to standard ANSI/ASHRAE 135-2010, Clause 13.1, “Change of Value Reporting” on page 412, Table 13-1 on page 413, and Table 13-1a on page 414.

Interpretation 135-2010-6 – June 13, 2012

Refers to the requirements presented in ANSI/ASHRAE 135-2010, Clause 15.7.2,

  • Relating to the special property OPTIONAL.

Interpretation 135-2010-5 – July 16, 2012

Refers to the requirements presented in ANSI/ASHRAE 135-2010, Clauses 12.25.9 and K.4.3,

  • Relating to T-VMT-E-B BIBB.

Interpretation 135-2010-4 – July 16, 2012

Refers to the requirements presented in ANSI/ASHRAE 135-2010, Clauses 5.2.1.2, 6, 6.4.4 and 6.6.3.5, as well as Table 6.1,

  • Relating to router requirements.

Interpretation 135-2010-3 – October 27, 2011

Refers to the requirements presented in ANSI/ASHRAE 135-2010, Clause 12.11.50,

  • Regarding Device Object Type, Interval_Offset.

Interpretation 135-2010-2 – October 27, 2011

Refers to the requirements presented in ANSI/ASHRAE 135-2010 clauses 12.25.5 (Trend Log Object Type, Enable property) and 12.25.14 (Trend Log Object Type, Log_Buffer property).

This interpretation request also applies to the corresponding property clauses of the Event Log Object Type (12.27.8, 12.27.13) and the Trend Log Multiple Object Type (12.30.8, 12.30.19).

Interpretation 135-2010-1 – May 25, 2011

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2010, Clause 12.24,

  • Relating to Schedule Object Type.
Interpretations of ASHRAE 135-2008

Interpretation 135-2008-21 – May 25, 2011

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008, Clauses 12.25 (pages 259 and 281),

  • Relating to Timestamping of Trend Log records.

Interpretation 135-2008-20 – May 25, 2011

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008, Clauses J.2 (page 617),

  • Relating to BACnet Broadcast Management Device (BBMD) and BACnet Virtual Link Layer (BVLL) Services.

Interpretation 135-2008-19 – January 29, 2011

Refers to the requirements presented in Addendum g to ANSI/ASHRAE Standard 135-2008, Clause 24.3.3.3 and Table 24.11 (page 20),

  • Relating to What it means for a device to “know a key”.

Interpretation 135-2008-18 – January 29, 2011

Refers to the requirements presented in Addendum g to ANSI/ASHRAE Standard 135-2008, Clauses 24.2.8, 24.2.9, 24.3.7, 24.12.1, S.1 (pages 12, 29, 39, 98),

  • Relating to Security Applied to Request-Master-Key message.

Interpretation 135-2008-17 – January 29, 2011

Refers to the requirements presented in Addendum g to ANSI/ASHRAE Standard 135-2008, Clauses 24.15.2.1 (page 45),

  • Relating to methods for discovering time.

Interpretation 135-2008-16 – January 29, 2011

Refers to the requirements presented in Addendum g to ANSI/ASHRAE Standard 135-2008, Clause 24.16.2 and Tables 24-8, 24-18, 24-22 and 24-24 (pages 47, 19, 22-23, 26-27, 28-29),

  • Relating to order of error checking in key messages.

Interpretation 135-2008-15 – January 29, 2011

Refers to the requirements presented in Addendum g to ANSI/ASHRAE Standard 135-2008, Clauses 24.2.3 and 24.12.1 (pages 11 and 40),

  • Relating to Selecting General-Network-Access key for encryption when another key is used for signing.

Interpretation 135-2008-14 – January 29, 2011

Refers to the requirements presented in Addendum g to ANSI/ASHRAE Standard 135-2008, Clause 24.2.11 (page 13),

  • Relating to Authentication Data length encoding.

Interpretation 135-2008-13 – January 29, 2011

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008, Clauses 6.4.7 and 6.4.8 (pages 55 and 56),

  • Relating Initialize-Routing-Table and Initialize-Routing-Table-Ack.

Interpretation 135-2008-12 – October 28, 2010

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008, Sections 12.1 and 12.1.11,

  • Relating to Accumulator object’s Scale property.

Interpretation 135-2008-11 – October 28, 2010

Refers to the requirements presented in Addendum p to ANSI/ASHRAE Standard 135-2008, Section 13.3.X,

  • Relating to the CHANGE_OF_STATUS_FLAGS Algorithm.

Interpretation 135-2008-10 – October 28, 2010

Refers to the requirements presented in Addendum g to ANSI/ASHRAE Standard 135-2008, Section 24.16.1,

  • Relating to APDU and NPDU sizes.

Interpretation 135-2008-9 – October 28, 2010

Refers to the requirements presented in Addendum g to ANSI/ASHRAE Standard 135-2008, Sections 12.X.15 and 24.16.2, relating to the Do_Not_Hide property of the Network Security object.

Interpretation 135-2008-8 – October 28, 2010

Refers to the requirements presented in Addendum g to ANSI/ASHRAE Standard 135-2008, Section 24.5 and Figure 24-2 (page 32),

  • Relating to securing proprietary network messages.

Interpretation 135-2008-7 – October 28, 2010

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008, Clauses 5.4 and 5.4.5.3,

  • Relating to the CannotSendSegmentedComplexACK for the AWAIT_RESPONSE.

Interpretation 135-2008-6 – October 28, 2010

Refers to the change of requirements presented in ANSI/ASHRAE Addendum l to ANSI/ASHRAE Standard 135-2008, Section 1 and ANSI/ASHRAE Addendum v to ANSI/ASHRAE Standard 135-2008, Section 3,

  • Relating to the support of the BIBB NM-CE-A in the device profile B-AWS.

Interpretation 135-2008-5 – May 28, 2010

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008

  • Relating to Date and Time.

Interpretation 135-2008-4 – January 23, 2010

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008, Section 12.13.7,

  • Regarding File Object Modification_Date property value.

Interpretation 135-2008-3 – January 23, 2010

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008, Section 12,

  • Relating to the data type of the number of elements of an array when accessing an array property with array index 0.

Interpretation 135-2008-2 – June 20, 2009

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008, Section 12.24.4,

  • Related to the calculation of the Present_Value property of a Schedule object.

Interpretation 135-2008-1 – June 20, 2009

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2008, Sections 12.19.10 and 12.20.10,

  • Relating to Shrinking Number_of_States in Commandable Multi-state objects.
Interpretations of ASHRAE 135-2004

Interpretation 135-2004-29 – January 24, 2009

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 19.1.3.2,

  • Relating to creating configuration File objects in the restore process.

Interpretation 135-2004-28 – September 17, 2008

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections 15.10.1.3.1 and 18.8.4,

  • Relating to WritePropertyMultiple with incorrect datatype.

Interpretation 135-2004-27 – September 17, 2008

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 21

  • Relating to BACnetEventParameters ‘buffer-ready’ choice.

Interpretation 135-2004-26 – September 17, 2008

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 13.11.1.1.5,

  • Regarding Priority Filter.

Interpretation 135-2004-25 – June 21, 2008

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections 13.2 and 13.3,

  • Relating to fault event reporting.

Interpretation 135-2004-24 – June 21, 2008

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections 19.2, 21 and 23.3 and Addendum f to ANSI/ASHRAE Standard 135-2004,

  • Regarding ENUMERATED values in BACnetPriorityValue.

Interpretation 135-2004-23 – June 21, 2008

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 13.2,

  • Relating to intrinsic reporting.

Interpretation 135-2004-22 – April 25, 2007

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections 6.5.3 and 9.5.6.4,

  • Regarding the methods for establishing the address of a BACnet router for a particular DNET.

Interpretation 135-2004-21 – January 27, 2007

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 12.24.4, 12.24.7 and 12.24.8

  • Regarding when the Present_Value of an object is evaluated within a selected Weekly_Schedule or Exception_Schedule.

Interpretation 135-2004-20 – January 27, 2007

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections 5.4, 5.4.1, 5.4.5.1, 5.4.5.3, and 12.11.27,

  • Related to the Device Object and the APDU_Timeout property.

Interpretation 135-2004-19 – January 27, 2007

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections.15.9.1.1.5, 15.10.3.2.4 and 19.2.1,

  • Related to writing properties with an out-of-range priority.

Interpretation 135-2004-18 – January 21, 2006

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 12.25.9,

  • Related to Log_Interval.

Interpretation 135-2004-17 – April 24, 2006

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 12.25.14,

  • Related to Log_Buffer.

Interpretation 135-2004-16 – June 24, 2006

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections 12.1.8, 12.2.8, 12.3.8, 12.4.7, 12.6.8, 12.7.8, 12.8.7, 12.17.7, 12.18.8, 12.20.7, and 12.23.8

  • Related to Event_State and Reliability properties.

Interpretation 135-2004-15 – September 28, 2005

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Annex J – BACnet/IP, specifically Section J.2.6.1,

  • Relating to Register-Foreign-Device: Format.

Interpretation 135-2004-14 – September 28, 2005

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 6.3.2,

  • Relating to Network Layer routing.

Interpretation 135-2004-13 – June 25, 2005

Refers refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections 12.1.10, 12.2.10, 12.3.10, 12.4.9, 12.6.10, 12.7.10, 12.8.9, 12.15.11, 12.16.11, 12.17.9, 12.18.10, 12.19.10, 12.20.9, 12.23.10,

  • Relating to the Reliability and Out_Of_Service properties.

Interpretation 135-2004-12 – June 25, 2005

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 6.4.4,

  • Relating to Reject-Message-To-Network, and Section 6.6.3.5, Reject-Message-To-Network.

Interpretation 135-2004-11 – June 25, 2005

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 12.25.14,

  • Relating to Log_Buffer, and Section 15.7.3.1.2, List of Property References.

Interpretation 135-2004-10 – June 25, 2005

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 6.6.1,

Relating to Routing Tables, and Section 6.6.3.6, Router-Busy-To-Network.

Interpretation 135-2004-9 – June 25, 2005

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections 12.1-12.4, 12.6-12.8, 12.15-12.20, 12.23, 12.25, and the corresponding tables in these sections,

  • Relating to intrinsic reporting.

Interpretation 135-2004-8 – June 25, 2005

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004 in the following sections and tables relating to FLOATING_LIMIT and OUT_OF_RANGE transitions: Sections 12.2.19-12.2.21, Sections 12.3.20-12.3.22, Sections 12.4.16-12.4.18, Section 12.17.32, Sections 12.23.22-12.23.24, Section 13.3.5, Section 13.3.6, Table 13.2.

Interpretation 135-2004-7 – February 5, 2005

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections K.5.15 and K.5.16.

Interpretation 135-2004-6 – February 5, 2005

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 12.24.8,

  • Regarding Exception_Schedule.

Interpretation 135-2004-5 – June 26, 2004

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 12.25.5,

  • Relating to Log_Enable, and Section 12.25.12, Stop_When_Full.

Interpretation 135-2004-4 – June 26, 2004

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Sections 12.25.14,

  • Relating to Log_Buffer, 12.25, and 15.7.2, Service Procedure.

Interpretation 135-2004-3 – June 26, 2004

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 12.25.5,

  • Relating to Log_Enable, and Section 12.25.12, Stop_When_Full.

Interpretation 135-2004-2 – June 26, 2004

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 13.11 GetEnrollmentSummary Service, specifically Section 13.11.1.2.1.4 (page 283),

  • Relating to the priority returned in a GetEnrollmentSummary response.

Interpretation 135-2004-1 – June 26, 2004

Refers to the requirements presented in ANSI/ASHRAE Standard 135-2004, Section 16.1 DeviceCommunicationControl Service, specifically Section 16.1.2 (page 326),

  • Relating to the canceling of DeviceCommunicationControl disabling of communication via a ReinitializeDevice request.
Interpretations of ASHRAE 135-2001

Interpretation 135-2001-1 – June 26, 2004

Refers to the requirements presented in ANSI/ASHRAE Addendum b to ANSI/ASHRAE Standard 135-2001, Section 15.8

  • Regarding the ReadRange Service.
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