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Interpretation 135-2020-1 – March 26, 2021 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clause K.6.7 regarding NM-FDR-A BIBB.)
Interpretation 135-2020-2 – April 23, 2021 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses 12.56.16, 12.11.18, 20.1.2.5 and Table 6.1 regarding APDU size properties and processing expectations based on these properties.)
Interpretation 135-2020-3 – March 26, 2021 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses 9.3.9 and 9.3.10, regarding implied restriction against MS/TP slaves using Extended (aka COBS encoded) frames.)
Interpretation 135-2020-4 – March 26, 2021 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clause K.5.20, regarding any requirement of how much configurability a writable Restart_Notification_Recipients shall exhibit in a device claiming DM-R-B.)
Interpretation 135-2020-5 – March 26, 2021 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Table 12-71, regarding Link_Speed having a Conformance Code of R.)
Interpretation 135-2020-6 – November 24, 2021 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses K5.39 and 22.1.5, regarding NM-FDR-A BIBB.)
Interpretation 135-2020-7 – November 24, 2021 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses L.7 and K.6.4, regarding DS-WP-B requirement for B-RTR.)
Interpretation 135-2020-8 – November 24, 2021 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses AB.2.3, AB.2.3.1, AB.3.1.4, regarding ‘Must Understand’.)
Interpretation 135-2020-9 – March 25, 2022 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clause 12.62.4.1 regarding staging object writing to target references.)
Interpretation 135-2020-10 – September 9, 2022 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses 12.2.10 and 12.17.9, Tables 12-2 and 12-20, regarding writability of the Reliability property when Out_Of_Service is TRUE.)
Interpretation 135-2020-11 – October 26, 2022 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses 13.19 and 21.2.3 regarding size of the “operations” BACnetAuditOperationFlags bitstring in the service.)
Interpretation 135-2020-12 – October 26, 2022 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020 for signed integer values. Reference Clauses 21.5 (Application Types) and K.1.17 (DS-M-A requirements) Table K-6.)
Interpretation 135-2020-13 – February 4, 2023 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses 13.9.1.1.12 and 13.8.1.1.12, regarding ToState Argument in EventNotifications.)
Interpretation 135-2020-14 – February 4, 2023 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clause K.5.6, requiring a device to support limited duration requests and Clause 16.1.1.3.1 which allows a device to reject limited duration requests if the device does not contain a clock.)
Interpretation 135-2020-15 – February 4, 2023 (Refers to ANSI/ASHRAE Standard 135-2020, Annex AB and WebSocket data frame opcodes defined within this annex.)
Interpretation 135-2020-16 – April 19, 2023 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clause 12.7, requiring a Binary Output object to support the COMMAND_FAILURE event algorithm if intrinsic reporting is supported.)
Interpretation 135-2020-17 – April 19, 2023 (Refers to ANSI/ASHRAE Standard 135-2020, Clause K.3.2, BIBB - Scheduling-Internal-B (SCHED-I-B) and the requirements of the Exception_Schedule property.)
Interpretation 135-2020-18 – June 26, 2023 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clause 12.62.5 regarding the Present_Stage property of the Staging Object.)
Interpretation 135-2020-19 – June 26, 2023 (Refers to ANSI/ASHRAE Standard 135-2020, Clause 15.7.1.3.1 – ReadPropertyMultiple Service – Result(-) – Error Type and requirements for Proprietary properties.)
Interpretation 135-2020-20 – June 26, 2023 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clause 12.21-12.21.5 and Table 12-24, regarding Notification_Class property conformance.)
Interpretation 135-2020-21 – October 31, 2023 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses 13.14.1.3.1, 13.14.2, 13.15.1.3.1, 13.15.2, and 13.16.2, regarding cancellation of a COV subscription.)
Interpretation 135-2020-22 – October 31, 2023 (Refers to ANSI/ASHRAE Standard 135-2020, Clause 16.1.2 – DeviceCommunicationControl Service – Service Procedure and the allowed initiated requests when DISABLE_INITIATION is received.)
Interpretation 135-2020-23 – October 31, 2023 (Refers to ANSI/ASHRAE Standard 135-2020, Clause 13.13 –LifeSafetyOperation Service and the definition of notification appliance in this clause.)
Interpretation 135-2020-24 – October 31, 2023 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Addendum ca, Clauses 12.X.6, 12.X.10, 12.Y.6, 12.Y.10 and Tables 12-X2, 12-Y2, regarding Default_Fade_Time, [fade-time] parameter.)
Interpretation 135-2020-25 – January 20, 2024 (Refers to ANSI/ASHRAE Standard 135-2020, Clause K.3.2, BIBB - Scheduling-Internal-B (SCHED-I-B) and the requirements of the Exception_Schedule property.)
Interpretation 135-2020-26 – January 20, 2024 (Refers to ANSI/ASHRAE Standard 135-2020, Clause 15.10, WritePropertyMultiple Service and the allowed error classes and codes when the entire service is rejected.)
Interpretation 135-2020-27 – January 20, 2024 (Refers to the requirements presented in ANSI/ASHRAE Standard 135-2020, Clauses AB.2.1, AB.4.2, AB.4.2.2 and Figure AB-8, regarding Destination Virtual Address.)
Interpretation 135-2020-28 – April 17, 2024 (Refers to ANSI/ASHRAE Standard 135-2020, Annex AB and the expected behavior when an invalid Originating Virtual Address (OVA) or Destination Virtual Address (DVA) is included.)
Interpretation 135-2020-29 – April 17, 2024 (Refers to ANSI/ASHRAE Standard 135-2020, Addendum cc, Clause 12.56.Y24 (Operational_Certificate_File) and 12.56.Y25 (Issuer_Certificate_Files) as it pertains to the DISCARD_CHANGES command and the File object, Modification_Date property requirements specified in Clause 12.13.7 of Standard 135-2020.)
Interpretation 135-2020-30 – April 17, 2024 (Refers to ANSI/ASHRAE Standard 135-2020, Addendum ca and pertains to the Default_Color_Temperature supporting a value of 0 and the value of Present_Value when a Color_Command is received.)
Interpretation 135-2020-31 – June 22, 2024 (Refers to ANSI/ASHRAE Standard 135-2020, Clause AB.7.4, relating to Date and Time properties of the Device object.)
Interpretation 135-2020-32 – June 22, 2024 (Refers to ANSI/ASHRAE Standard 135-2020 and pertains to the default values of the value source properties.)
Interpretation 135-2020-33 – June 22, 2024 (Refers to ANSI/ASHRAE Standard 135-2020 Addendum cf and the change from Must Understand to Every Segment in Data Options.)
Interpretation 135-2020-34 – June 22, 2024 (Refers to ANSI/ASHRAE Standard 135-2020 and pertains to the expectations of a BACnet/SC device when it receives a message with a data option it does not understand.)
Interpretation 135-2020-35 – June 22, 2024 (Refers to ANSI/ASHRAE Standard 135-2020 and pertains to the expectations of a BACnet/SC to BACnet/SC router when it receives a message that it is required to route that contains a data option it does not understand.)
Interpretation 135-2020-36 – June 22, 2024 (Refers to ANSI/ASHRAE Standard 135-2020, Addendum cc and pertains to BIBB NM-CC-A and the requirement to read and write files referenced in the Network Port object.)