Analog Output Attributes - Metasys - LIT-1201793 - Software Application - Site Management Portal - 12.0.50

Metasys Site Management Portal Help

Brand
Metasys
Product name
Site Management Portal
Document type
User Guide
Document number
LIT-1201793
Version
12.0.50
Revision date
2023-06-02
Language
English

This object contains attributes common to many Metasys system objects. This section includes attributes of the Focus/Configuration tab, the Diagnostics tab (if applicable), and any other tab specific only to this object. See the Object and Feature Tabs section for information on the attributes that appear on the other tabs of this object (for example, the Hardware and Options tab appear on point objects).

Note: In the Notes and BACnet Notes columns, letters indicate the following: B - Exposed as standard BACnet property, C - Configurable, D - Default Attribute for Display, N - Value Not Required, R - Affected by Extension’s Reliability, W - Writable.
Table 1. Analog Output Object Attributes - Focus/Configuration Tab

Attribute Name

Notes

BACnet Notes

Initial Value

Values/Options/Range

Description

COV Increment

C,W

B,W

0.1

Any value > 0

Specifies the minimum change in Present Value required for the object to report a change.

For MS/TP Analog Outputs, COV Increment may not be writable, based on its configuration.

Current Command Priority

 

B

 

1 - 16

Indicates the command priority currently assigned to the object. A blank in this field indicates the object is not under any command.

Device Type

C,W

W

Null

Limit: 20 characters

Contains a description of the physical device connected to the object.

Display Precision

C,W

C,W

10ths

  Defines the decimal rounding and the decimal places to display of the Present Value and associated attributes.

Intrinsic Alarming Defined

C

 

False

 

Enables the BACnet Intrinsic Alarming feature in the object and the definition of related attributes. For detailed information, see BACnet Intrinsic Alarming.

Max Value

C,W

B,W

100.0

This attribute is not Writable for a PAO.

Defines the highest reliable value (in engineering units) for the Present Value.

Min Value

C,W

B,W

0.0

This attribute is not Writable for a PAO.

Defines the lowest reliable value (in engineering units) for the Present Value.

Out of Service

C,W

B,W

   

Used to de-couple the object from the physical output. When Out of Service is True, the object de-couples the Present Value and Reliability from the hardware. The Reliability is writable when Out Of Service is True. When de-coupled, the Present Value can be changed to simulate specific conditions or for test purposes.

Additionally, the Out of Service state of the Status Flag attribute is set to True and the Fault state is decoupled from the physical input when Out of Service is True.

Present Value

DNRW

B,W

0.0

 

Priority Array

        Lists values of the object in level of importance.

Reliability

W

B,W

0

No Fault Detected (Reliable), Open Loop, Shorted Loop, No Output, Unreliable Other

Examples:

Reliable - No detectable faults

Unreliable High - Present Value is greater than the Max Value.

Unreliable Low - Present Value is less than the Min Value.

When Out of Service is True, the Reliability attribute may be written directly.

Resolution

 

B

0.1

 

Indicates the smallest possible change in Present Value (in engineering units) and is equal to the Display Precision.

This attribute has the data type required by the standard BACnet property.

Status Flags

 

B

False,

False,

False,

False

In Alarm, Fault, Overridden, Out of Service

Indicates the general status of the Analog Output object in BACnet terms and contains four independent states. The four flags are:

In Alarm - False if the Event State attribute value is Normal; otherwise, the In Alarm flag is True. (Set only by BACnet Intrinsic Alarming.)

Fault - True (1) if the Reliability attribute is not reliable; otherwise, the Fault flag is False.

Overridden - Overridden flag is True if the Present Value is overridden at the hardware source level.

Out of Service - Out of Service flag is True if the Out of Service attribute value is True; otherwise, the Out of Service flag is False.

Units

C,W

W

%

This attribute is not Writable for a PAO.

Indicates the engineering measurements units used by the object.
Use COV Min Send Time

W

 

False

 
Use Remote Alarming  

B,C,W

False

  When the attribute Intrinsic Alarming Defined is set to True, determines where alarms for the object originate. If the remote integrated object contains attributes for originating alarms, then Use Remote Alarming defaults to True, causing the local mapper object to accept alarms from the remote integrated object that are routed to the NxE. If the remote integrated object does not contain attributes for originating alarms, then Use Remote Alarming defaults to False causing the local mapper object to originate alarms. When Use Remote Alarming is false, any alarms from the remote integrated object are ignored at the NxE. If the value of Use Remote Alarming is changed, a restart of the NxE may be required to assure correct operation. This attribute applies only to BACnet integrations.