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BACnet - A Data Communication Protocol for Building Automation and Control Networks
ASHRAE 135 INT 19
Year: 2019
Abstract: Carl Neilson, BACnet International, 61 Seagirt Road, BC, V9Z 1A3.
This request for interpretation refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56, regarding activating changes.
Numerous properties in the Network Port object include the following language:
If this property is writable, then a successful write to this property shall set the Changes_Pending property to TRUE.
A value written to this property shall become effective when the device receives a ReinitializeDevice service request with a 'Reinitialized State of Device' of ACTIVATE_CHANGES or WARMSTART.
The above language implies that execution of ReinitializeDevice is required if the property is writable but there is no language that explicitly states that this is the case.
The description of the Changes_Pending property includes the following allowance:
It is a local matter as to whether or not resetting the device by means other than a ReinitializeDevice service with a 'Reinitialized State of Device' of ACTIVATE_CHANGES or WARMSTART discards pending changes, activates pending changes, or leaves the changes pending.
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BACnet - A Data Communication Protocol for Building Automation and Control Networks
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| contributor author | ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. | |
| date accessioned | 2020-07-27T20:50:59Z | |
| date available | 2020-07-27T20:50:59Z | |
| date issued | 2019 | |
| identifier other | WVZLKGAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;query=autho162/handle/yse/280364 | |
| description abstract | Carl Neilson, BACnet International, 61 Seagirt Road, BC, V9Z 1A3. This request for interpretation refers to the requirements presented in ANSI/ASHRAE Standard 135-2016, Clause 12.56, regarding activating changes. Numerous properties in the Network Port object include the following language: If this property is writable, then a successful write to this property shall set the Changes_Pending property to TRUE. A value written to this property shall become effective when the device receives a ReinitializeDevice service request with a 'Reinitialized State of Device' of ACTIVATE_CHANGES or WARMSTART. The above language implies that execution of ReinitializeDevice is required if the property is writable but there is no language that explicitly states that this is the case. The description of the Changes_Pending property includes the following allowance: It is a local matter as to whether or not resetting the device by means other than a ReinitializeDevice service with a 'Reinitialized State of Device' of ACTIVATE_CHANGES or WARMSTART discards pending changes, activates pending changes, or leaves the changes pending. | |
| language | English | |
| title | BACnet - A Data Communication Protocol for Building Automation and Control Networks | en |
| title | ASHRAE 135 INT 19 | num |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.:;2019 | |
| contenttype | fulltext |