WindO/I-NV4 User’s Manual
3-101
7 BACnet Communication
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The MICRO/I implements the COV function by sending the Confirmed COV Notification service or Unconfirmed COV
Notification service to the report requesting BACnet device according to the parameters contained in the report
request when that report request (Subscribe COV service) was transmitted from the BACnet device.
The key parameters contained in the report request are as follows.
The following diagram shows when the MICRO/I has received a report request transmitted from a BACnet device like
that in the following table.
Parameters
Description
Monitored Object Identifier
Type and ID of object for which to enable the COV function.
Issue Confirmed Notifications
Selects whether or not to confirm messages that will be sent from the MICRO/I to
the BACnet device.
•With confirmation (ConfirmedCOVNotification)
•Without confirmation (UnconfirmedCOVNotification)
Lifetime
The time to enable the COV function in 1 sec increments.
If 0 or omitted, the COV function is enabled with no time limit.
Report Request Parameters
Description
Monitored Object Identifier
Analog Input object (instant number: 10)
Issue Confirmed Notifications
With confirmation (ConfirmedCOVNotification)
Lifetime
360 sec
BACnet device
MICRO/I
Report request
360 sec
(Lifetime)
(To report requester)
Present_Value of AI-10
has changed to 15.0.
Status_Flags is { }.
Present_Value of AI-10: 10.0
COV_Increment: 3.0
Status_Flags: { }
Present_Value of AI-10 has changed to 15.0
(Change in Present_Value (5.0) > COV_Increment (3.0))
Status_Flags of AI-10 has changed
Present_Value of AI-10 has changed
Status_Flags of AI-10
has changed to {FAULT}.
The maximum number of COVs that can be registered is 256.
For details on the parameters in a response request, refer to "BACnet Building Automation Data
Communication Protocol", a book published by the Institute of Electrical Installation Engineers of Japan.
Summary of Contents for WindO/I-NV4
Page 1: ...B 1701 16 User s Manual...
Page 108: ...5 WindO I NV4 Common Operations and Settings 2 76 WindO I NV4 User s Manual...
Page 256: ...7 BACnet Communication 3 148 WindO I NV4 User s Manual...
Page 372: ...6 Screen Restrictions 5 32 WindO I NV4 User s Manual...
Page 390: ...5 Part Library Function 6 18 WindO I NV4 User s Manual...
Page 420: ...3 Text 7 30 WindO I NV4 User s Manual...
Page 628: ...2 Multi State Lamp 9 34 WindO I NV4 User s Manual...
Page 924: ...4 Meter 11 76 WindO I NV4 User s Manual...
Page 990: ...7 Timer 12 66 WindO I NV4 User s Manual...
Page 1030: ...4 Using Data and Detected Alarms 13 40 WindO I NV4 User s Manual...
Page 1098: ...4 Using the Data 15 22 WindO I NV4 User s Manual...
Page 1248: ...5 Restrictions 22 18 WindO I NV4 User s Manual...
Page 1370: ...2 Monitoring on the MICRO I 25 28 WindO I NV4 User s Manual...
Page 1388: ...4 Restrictions 26 18 WindO I NV4 User s Manual...
Page 1546: ...5 Module Configuration Dialog Box 30 36 WindO I NV4 User s Manual...
Page 1614: ...3 Settings 34 14 WindO I NV4 User s Manual...
Page 1726: ...5 Text Alignment A 10 WindO I NV4 User s Manual...