TFxB Series Thermostat Controller
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Device Object Properties
The following table lists all the BACnet
®
properties supported for the device object. The “W” indicates if the
property is writable using the BACnet
®
WriteProperty service.
Property Value
Writable
Object_Identifier
Programmable where the instance part of the Object_Identifier is in
the range of 0-4194302. The device instance must be unique system-
wide. The default value for the device instance=153000
(Vendor_Identifier*1000)
W
Object_Name
Programmable up to 32 characters. The device name must be unique
system-wide. The default value is Model_Name.
W
Description
Programmable up to 32 characters. The default value= "BACnet
thermostat"
W
Object_Type 8
System_Status
Non-Operational if major error on device.
Vendor_Identifier Always
153
Vendor_Name
Always “National Environmental Products Ltd”
Model_Name
Example : “TFCB24F3XYZ3”
Firmware_Revision currently
“1.17”
Application_Software_Version currently
“1.20”
Protocol_Version Always
1
Protocol_Revision Always
4
DataBase_Revision
Default = 0, will be incremented if Object_Name and/or
Odject_Identifier is modified
Max_APDU_Length_Accepted Always
107
Segmentation_Supported
(3) = No Segmentation
APDU_Timeout 3000
Number_of_APDU_Retries Always
0
Protocol_Services_Supported
Always 0x00 0x09 0x40 0x00 0x60 (i.e. a
bitstring
in BACnet
®
order)
Protocol_Object_Types_Supported
Always 0x00, 0xB4, 0x80, 0x10
(i.e. a bitstring in BACnet
®
order)
- analog-input, analog-value, binary-input, binary-value
- device
- multi-state-value
Object_List
Per the standard. Because of restrictions on the size of the transmit
buffers, the entire Object_List cannot be returned at once, rather the
Object_List must be read, one-at-a-time.
Device_Address_Binding Always
empty.
Max_Master
Programmable in the range of 0-127. Default value=127
W
Max_Info_Frames Always
1
Proprietary property #1000
Programmable. This proprietary property represents the MS/TP MAC
address in the range of (0-254). Values 128 to 254 represent MS/TP
non-token-passing slave devices. Default value=1
W
Proprietary property #1001
Programmable. This proprietary property represents the MS/TP baud
rate. This value is Unsigned type, and available values are 9600,
19200, 38400, 76800. Writing 0 will activate auto baud rate
functionality. Reading this property will always return actual baud rate.
Default : Auto* (Auto Baud Rate Detection requires V1.17 and up)
W
Proprietary property #1002
Programmable. This proprietary property represents that period of
time that an object in/out of service will automatically return to normal.
Range = 0-120 minutes (unsigned type). Writing 0 means no
automatic return to normal. Default: 15 minutes.
W
