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BACnet Ethernet (BAC)
OPC Server Data Sheet

Platform: Windows NT, Windows 2000, Windows XP
Interface Type: Ethernet
Data Link Layer Option: ISO/IEC 8802-3
Protocol: BACnet Ethernet
Hardware Tested: Alerton BACtalk VLC-853C3, Alerton LSI (LAN System Integrater)
Requirements: Windows NT 4.0 (Service Pack 3 or later) or Windows 2000, NDIS Compatible Ethernet Adapter
Comments: The BACnet Ethernet OPC server communicates to any standard BACnet device across an Ethernet (ISO 8802-3) network. The server uses the services listed below to read data for BACnet objects (also listed below), and provides the data via OPC.
References: ASHRAE BACnet reference manual, ANSI/ASHRAE 135-1995
Contact: Dimension Software, Inc.
1536 St. Clair Road, Taylorsville, NC 28681, USA
(828) 635-7189, Fax: (828) 625-5319, E-Mail: , Web: http://dimension-software.com
BACnet Standard Application Services Supported:
Application Service Initiate Requests Execute Requests
Read-Property-Single X  
Read-Property-Multiple X  
Write-Property-Single X  
Write-Property-Multiple X  
Who-Is X  
I-Am   X
Standard Object Types Supported:
AI Analog Input Object
AO Analog Output Object
AV Analog Value Object
BI Binary Input Object
BO Binary Output Object
BV Binary Value Object
MSI Multistate Input Object
MSO Multistate Output Object
Device BAC uses the device object to Auto-Configure itself
Character Sets Supported:
Special Functionality Supported:
Segmented Requests, Window Size: 1
Segmented Responses, Window Size: 1
Auto-Configure Auto-Configure allows the user to automatically identify devices on the BACnet network and select the device objects required for their application.  BAC uses the WhoIs object type to search the network to identify devices.  It then uses the Device object to list all objects provided by each device.  The user can select objects from the list that are required for his/her application.
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