Dwyer Instruments IEF Series Operating Instruction page 4

Binary Value – Reverse Flow
Property Default Value
Object Identifier BV1
Object Name "Reverse Flow"
ObjectType BINARY_VALUE (5)
Present Value Inactive (0)
Status Flags 0
Event State NORMAL (0)
Reliability NO_FAULT_DETECTED(0)
Out Of Service FALSE (0)
Property List
This object provides a simple indication of the direction of process flow. When the
process fluid is detected as flowing in the normal direction, the present value will return
inactive(0). When the process fluid is detected as flowing in the reverse direction, the
present value will return active(1).
This object supports COV subscription to allow a monitoring system to easily detect
changes in flow direction.
Binary Value – Empty Pipe
Property Default Value
Object Identifier BV2
Object Name "Empty Pipe"
ObjectType BINARY_VALUE (5)
Present Value
Inactive (0)
Status Flags 0
Event State
NORMAL (0)
Reliability NO_FAULT_DETECTED(0)
Out Of Service
FALSE (0)
Property List
This object provides a simple indication of an error state where no process flow is
in contact with the probe. When the process fluid is detected, the present value will
return inactive(0). When the process fluid is not detected, the present value will return
active(1).
This object supports COV subscription to allow a monitoring system to easily detect
this error condition.
Binary Value – Reset Total Flow
Property Default Value
Object Identifier BV3
Object Name
"Reset Total Flow"
ObjectType BINARY_VALUE (5)
Present Value
Inactive (0)
Status Flags 0
Event State NORMAL (0)
Reliability NO_FAULT_DETECTED(0)
Out Of Service FALSE (0)
Property List
Writing a value of 1 to the present value of this object will reset the value of Total Flow
to 0. Writing a value of 0 has no effect.
Property Data Type
BACnetObjectIdentifier
CharacterString
BACnetObjectType
BACnetBinaryPV
BACnetStatusFlags
BACnetEventState
BACnetReliability
Boolean
BACnetARRAY[N] of BACnetPropertyIdentifier
Property Data Type
BACnetObjectIdentifier
CharacterString
BACnetObjectType
BACnetBinaryPV
BACnetStatusFlags
BACnetEventState
BACnetReliability
Boolean
BACnetARRAY[N] of BACnetPropertyIdentifier
Property Data Type
BACnetObjectIdentifier
CharacterString
BACnetObjectType
BACnetBinaryPV
BACnetStatusFlags
BACnetEventState
BACnetReliability
Boolean
BACnetARRAY[N] of BACnetPropertyIdentifier
Access
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Read/Write
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Access
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