B.7 BACnet Objects Supported
u
Present Value Access
The Present Value (PV) of BACnet objects can always be read. In addition, some PVs can be written or commanded. A
commandable PV is similar to writing the value, but the value is actually written into a priority array. The value occupying
the highest priority in the array will be used by the drive. The convention for showing how the PV is accessed is shown in
Table B.3 and will be noted for the PV of each object.
Table B.3 Present Value Access Values
PV Access Name Description
C Commandable Value written to a priority array. The highest priority value in the array is then written to the drive.
R Readable Value is read-only
W Writable Value written to the drive
u
Supported Properties of Objects
Table B.4 Object Properties
Property
Object Type
Device
Analog
Input
Analog
Output
Analog
Value
Binary
Output
Binary
Output
Binary
Value
Object_Identifier Yes Yes Yes Yes Yes Yes Yes
Object_Name Yes Yes Yes Yes Yes Yes Yes
Object_Type Yes Yes Yes Yes Yes Yes Yes
System_Status Yes – – – – – –
Vendor_Name Yes – – – – – –
Vendor_Identifier Yes – – – – – –
Model_Name Yes – – – – – –
Firmware_Revision Yes – – – – – –
Protocol_Version Yes – – – – – –
Protocol_Revision Yes – – – – – –
Protocol_Services_Supported Yes – – – – – –
Protocol_Object_Types_Supported Yes – – – – – –
Object_List Yes – – – – – –
Max_ADPU_Length_Accepted Yes – – – – – –
Segmentation_Supported Yes – – – – – –
Local_Time Yes – – – – – –
Local_Date Yes – – – – – –
ADPU_Timeout Yes – – – – – –
Number_Of_ADPU_Retries Yes – – – – – –
Max_Masters Yes – – – – – –
Max_Info_Frames Yes – – – – – –
Device_Address_Binding Yes – – – – – –
Database_Revision Yes – – – – – –
Present_Value – Yes Yes Yes Yes Yes Yes
Status_Flags – Yes Yes Yes Yes Yes Yes
Event_State – Yes Yes Yes Yes Yes Yes
Reliability – Yes Yes Yes Yes Yes Yes
Out_Of_Service – Yes Yes Yes Yes Yes Yes
Units – Yes Yes Yes – – –
Priority_Array – –
Yes
<1>
Yes
<1>
– Yes Yes
Relinquish_Default – –
Yes
<1>
Yes
<1>
– Yes Yes
Polarity – – – – Yes Yes –
B.7 BACnet Objects Supported
256
YASKAWA SIEP YAIZ1U 03B YASKAWA AC Drive – Z1000 Programming Manual
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