Trane Trane Communicating Thermostats (BACnet), BAS-SVP10A-EN manual Summary of BACnet Objects

Summary of BACnet Objects

The Building Automation and Control Network (BACnet and ANSI/ASHRAE Standard 135-2004) protocol is a standard that allows building automation systems or components from different manufacturers to share information and control functions. BACnet provides building owners the capability to connect various types of building control systems or subsystems together for many uses. In addition, multiple vendors can use this protocol to share information for monitoring and supervisory control between systems and devices in a multi-vendor interconnected system.

The BACnet protocol identifies standard objects (data points) called BACnet objects. Each object has a defined list of properties that provide information about that object. BACnet also defines a number of standard application services that are used to access data and manipulate these objects and provides a client/server communication between devices.

Supported BACnet Services

The BACnet communicating thermostat meets all requirements for designation as an Application Specific Controller (B-ASC). The BACnet thermostat series supports the following BACnet Interoperability Building Blocks (BIBBs).

Table 1. BACnet Interoperability Building Blocks

Application Service	Designation
Data Sharing – Read Property - B	DS-RP-B
Data Sharing – Read Property Multiple - B	DS-RPM-B
Data Sharing – Write Property - B	DS-WP-B
Device Management - Device Communication Control - B DM-DCC-B
Device Management – Dynamic Device Binding - B	DM-DDB-B
Device Management – Dynamic Object Binding - B	DM-DOB-B

Notes:

•The thermostat does not support seqmented requests or responses.

•Models X13511541010 and -2010—Time synchronization can be made through a network even if the thermostat does not support the full date. Therefore, the device cannot claim conformance to the DeviceManagement – TimeSynchronization - B (DM-TS-B) service. The device object does not have the Local_Time or Local_Date properties.

Default Device Name and Default Device ID

The Default Device Name is set to: TStat_EquipType_Trane_MAC where: EquipType is FanCoil, RTU, or HeatPump and MAC is the current MAC address of the device.

•The Device Name is changed if you change the device MAC address.

•The Device Name and Device ID properties are writable in the Device object. Both properties can be changed from any BACnet network management tool as long as the tool itself can write to these properties.

(X13511543010) Fan Coil Models

•Default Device ID is set to: 7300MAC where MAC is the current MAC address of the device that you set from the Installer Configuration Parameter menu on the Trane Communicating Thermostat.

•The Device ID changes if the device’s MAC address is changed. For example, when a fan coil communicating thermostat with a MAC address of 41 is connected to a network, its default Device Name will be TStat_FanCoil_Trane_41 and its default Device ID will be 730041.

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