7 BACnet Communication
3-124
WindO/I-NV4 User’s Manual
7.8 Objects
The MICRO/I holds objects registered with WindO/I-NV4 in internal memory. Part of the properties of the object can
be allocated to the device address, and the value of the device address can be written and read. BACnet devices can
read and write the properties of objects on the MICRO/I using services.
Properties of objects on the MICRO/I and values of device addresses allocated to properties are continually
synchronized.
For how to register objects using WindO/I-NV4, refer to “7.6 BACnet/IP Settings Procedure” on page 3-105. The
maximum number of objects that can be registered is 256.
The following diagram shows two concepts.
(1) The BACnet device reads the analog input value of the Analog Input object.
(2) The BACnet device writes the analog output value of the Analog Output object.
BACnet objects
BACnet client
Initial values of properties
(Set with WindO/I-NV4)
MICRO/I starts running
∙ Data Sharing
Read Property
∙ Data Sharing
Read Property
Multiple
∙ Data Sharing
Write Property
∙ Data Sharing
Write Property
Multiple
Device addresses
Physical I/Os
Analog
Input object
Present_Value:
10.0
Analog
Output object
Present_Value:
20.0
XXXX object
YYYY object
D0000: 1000
Coefficient: 0.01
External
analog input:
10 V
Mutually
reflected
External
analog output:
20 mA
D0004: 1000
Coefficient: 0.02
CH0: 10 V
CH2: 20 mA
MICRO/I
Analog I/O module
(1)
(1)
(2)
(2)
(2)
(1)
For details on properties held by objects, 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...