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5.4.2.Driver Specific Map Descriptor Parameters
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Map Descriptors  | 
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Column Title  | Function  | Legal Values  | ||
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  | One of the Node Names  | ||
Node_Name  | Name of Node to fetch data from  | specified in “Server Side  | ||
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  | Node Descriptors” above  | ||
Data_Type  | Data type in Controller  | AI, AO, AV, BI, BO, BV, MI, | ||
MO, MV | 9  | |||
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Object_ID  | Address of the object  | 0, 1, 2, 3, …4194303  | ||
Property  | The object property to read  | Present_Value  | ||
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Units*  | The object units  | Refer to Appendix D,  | ||
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Data_Array_Low_Scale*  | Scaling zero in Data Array  | |||
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Data_Array_High_Scale*  | Scaling max in Data Array  | |||
Node_Low_Scale*  | Scaling zero in Connected Node  | |||
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Node_High_Scale*  | Scaling max in Connected Node  | |||
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Active_Text10  | Specify the Active Text property of  | Any legal BACnet Ascii  | ||
  | the Object  | string  | 
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Inactive_Text10  | Specify the Inactive Text property of  | Any legal BACnet Ascii  | ||
  | the Object  | string  | 
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Relinquish_Default10  | Specify the startup  | 
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Relinquish_Default Property value  | Any Float value  | |||
  | for this Object  | 
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  | This   | 
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Custom_Type  | a numerical value for the  | 1..1023  | 
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  | Data_Type. e.g. Analog Value = 2  | 
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  | This   | 
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Custom_Prop  | numerical value for the property.  | 1..4194303  | ||
  | e.g. Present Value = 85  | 
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9Refer to Appendix A.1 for further information.
10See the BACnet DFS to determine if a particular object supports this property
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