Command-Failure Extension - Technical Manual - PXC4.E16.A

Command-Failure Extension - Technical Manual - PXC4.E16.A - PXC7.E400.A

Desigo PXC.A Reference Technical Manual

Product Family

APOGEE

BACnet

Content Language

English

Content Type

Technical Documentation > Technical Manual

Document No

A6V12954388_en--_d

Download ID

A6V12954388

Stock No.

S55375-C114

S55375-C126

Product No.

PXC4.E16.A

PXC7.E400.A

Access level

Internet

File Type

html

Command-Failure Extension

The Command-Failure extension detects whether the object's present-value differs from feedback-value for a defined time period.

Supported BACnet object types capable of using Command-Failure extension:

Binary_Output
Multistate_Output

Property Name	Description
Name-Reference	A writable proprietary property that references the object providing the feedback-value.
Ext-Property-Identifier	A read-only property that specifies the feedback property for this Event-Enrollment object instance. Ext-Property-Identifier may be displayed the BACnet property ID as a string. For example, "85".
Ext-Value-Reference	A read-only proprietary property that specifies the DOPR of the feedback value. The resolved Name-Reference and Ext-Property-Identifier properties create the value of Ext-Value-Reference.
Feedback-Value	A read-only proprietary property that provides the actual feedback value. Feedback-Value equates to the Feedback_Value property used in Binary Output and Multistate Output intrinsic alarming.
Time-Delay	A writable proprietary property that specifies a deadband time, in seconds, that must pass between the time an object first detects an offnormal condition and a to-offnormal event state transition occurs.

If the Object-Property-Reference references a BACnet Binary_Output object and Ext-Value-Reference does not reference a boolean property, firmware shall set Ext-Value-Reference to default. The EEO will not detect event states or issue event notifications and will go into configuration error.

If the Object-Property-Reference references a BACnet Multistate_Output object and Ext-Value-Reference does not reference an Unsigned property, firmware shall set Ext-Value-Reference to default. The EEO will not detect event states or issue event notifications and will go into configuration error.

If the Name-Reference is not successfully resolved, firmware shall set Ext-Value-Reference to default. The EEO will not detect event states or issue event notifications and will go into configuration error.

If the Object-Name-Reference is not successfully resolved, Object-Property-Reference shall be set to default, reliability shall be set to configuration error, and the EEO will not detect event states or issue event notifications.