B.7 BACnet Objects Supportedu Present Value AccessThe Present Value (PV) of BACnet objects can always be read. In addition, some PVs can be written or commanded. Acommandable PV is similar to writing the value, but the value is actually written into a priority array. The value occupyingthe highest priority in the array will be used by the drive. The convention for showing how the PV is accessed is shown inTable B.3 and will be noted for the PV of each object.Table B.3 Present Value Access ValuesPV Access Name DescriptionC 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-onlyW Writable Value written to the driveu Supported Properties of ObjectsTable B.4 Object PropertiesPropertyObject TypeDevice AnalogInput AnalogOutput AnalogValue BinaryOutput BinaryOutput BinaryValueObject_Identifier Yes Yes Yes Yes Yes Yes YesObject_Name Yes Yes Yes Yes Yes Yes YesObject_Type Yes Yes Yes Yes Yes Yes YesSystem_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 YesStatus_Flags – Yes Yes Yes Yes Yes YesEvent_State – Yes Yes Yes Yes Yes YesReliability – Yes Yes Yes Yes Yes YesOut_Of_Service – Yes Yes Yes Yes Yes YesUnits – Yes Yes Yes – – –Priority_Array – – Yes <1> Yes <1> – Yes YesRelinquish_Default – – Yes <1> Yes <1> – Yes YesPolarity – – – – Yes Yes –B.7 BACnet Objects Supported256 YASKAWA SIEP YAIZ1U 03B YASKAWA AC Drive – Z1000 Programming Manual
