Archive for October, 2007

BACnet: Priority Array

The BACnet Priority Array is a specific property type described by the standard as one of the command prioritization mechanisms.
The developer should be aware of the manner in which this property type functions concerning priorities within building control systems.
The Priority Array is further defined by the standard as a read-only property that consists of commands […]

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Wireless Sensor And Web Applications Product

The Arch Rock Corporation has developed an effective wireless sensor and web services system in their Primer Pack/IP product.
This product has unique qualities that would be beneficial to the following areas of building automation:

Data Management
Building Safety
Security Applications
Environmental Controls

The Primer Pack/IP will offer the end-user the option to move from a static, wired system to a […]

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BACnet: Life Safety Objects

The BACnet standard describes two types of Life Safety objects. The two types of these objects include:

Life Safety Point Object Type
Life Safety Zone Object Type

The Life Safety Point object type is defined by the standard as those objects related to fire, safety, and security applications. The condition of this object type is determined by the […]

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BACnet: Averaging Object

The Averaging object is described by the BACnet standard as a recording medium of visible value characteristics over a specific time interval.These specific sampled values may take the following forms in the object:

Boolean
Integer
Unsigned
Enumerated
Real

The following table will present the actual properties and associated datatypes of the Averaging object from the BACnet standard:

Property
Datatype

Object_Identifier
BACnet Object Identifier

Object_Name
Character String

Object_Type
BACnet Object […]

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BACnet: Pulse Converter Object

The Pulse Converter object is described by the BACnet standard as a process monitor represented by counts or pulses.
The type of processes monitored can include those tasks in maintaining a building. Such as the following examples:

Power Usage
Water Usage
Natural Gas Usage

The Pulse Converter object might represent a physical input. As an alternative, it might acquire the […]

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