Greenheck AMD-xx-TD Transmitter - Manual (Page 34)

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X Property Description set by AMC Firmware
X Device_Name set via Vari-Green transmitter menu
X Max_Master set via Vari-Green transmitter menu
X Max_Info_Frames set via Vari-Green transmitter menu
X Instance ID set via Vari-Green transmitter menu
None List of all properties that are writable where not otherwise required by this standard
None List of proprietary properties
None List of any property value range restrictions
List of non-dynamic object identifiers and their meaning in this device
- Analog Input AFO ......................Total System Flow (always present)
- Analog Input AT1/DP1 .............. Total System Temperature
- Analog Input SF1 ...................... Sensor 1 Flow (guaranteed to be present)
- Analog Input ST1 ...................... Sensor 1 Temperature (guaranteed to be present)
- Analog Input SF2 ...................... Analog Inputs 2-32 are only present if there is more than 1 sensor in system
- Analog Input ST2 ......................
- Analog Input SF32 ....................
- Analog Input ST32 ....................
Device Object Type
No Dynamically creatable using BACnet’s CreateObject Service?
No Dynamically deletable useing BACnet’s DeleteObject Service?
List of “Optional” Properties Supported
X PROTOCOL_CONFORMANCE_CLASS
List of all properties that are writeable where not otherwise required by this standard
temperature. So an Vari-green system with 8 sensors will have a total of 18 AI objects. These are for average Flow
and average DP. This object does not support intrinsic reporting, so the event state is always “NORMAL”.
Usage of the Status Field.
– Each object supports status bits IN_ALARM, FAULT, and OUT_OF_SERVICE.
– OVERRIDDEN is not supported as it makes no sense to override a value with no reasonable substitute.
– The OOS property indicates the physical input to the object is not in service. In the case of an ElectraFLO system,
this will be set by the transmitter if someone intentionally removes the sensor from the network. If the transmitter
determines there is a problem with any sensor in question, the OOS bit is set along with the FAULT bit. If the OOS
property is set, data from the physical device will not be used in any calculation.
– IN_ALARM is set for values which exceed the predetermined values set in the transmitter memory. Sensor analog
objects will not typically have this flag set. This will be done at the transmitter level indicating the average flow or
temperature are out of range.
List of proprietary properties
- Property Identifier ...... 38400
- Property Datatype ...... Unsigned
- Meaning ...................... Baud Rate (set via Vari-Green transmitter menu)