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FS-8700-73 BACnet MSTP Driver Manual Page 15 of 24
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll Free: (888) 509-1970 email: support@fieldserver.com
5.4. Server Side Map Descriptors
5.4.1. FieldServer Specific Map Descriptor Parameters
Column Title Function Legal Values
Map_Descriptor_Name
Name of this Map Descriptor Up to 32 alphanumeric characters.
Data_Array_Name
Name of Data Array where
data is to be stored in the
FieldServer
One of the Data Array names from
“Data Array” section
Data_Array_Offset Starting location in Data Array
0 to Data_Array_Length-1 as
specified in “Data_Array” section
Function
Function of Server Map
Descriptor
Server
5.4.2. Driver Specific Map Descriptor Parameters
Column Title Function Legal Values
Node_Name Name of FieldServer Node
One of the node names
specified in “Server Node
Descriptor” above
Data_Type Data type in BCU
AI, AO, AV, BI, BV, MI, MO,
MV
17
Object_Instance
Address of the object 0, 1, 2, 3, …
Units The object units Appendix 1
Data_Array_Low_Scale* Scaling zero in Data Array
-32767 to 32767, 0
Data_Array_High_Scale* Scaling max in Data Array
-32767 to 32767, 100
Node_Low_Scale*
Scaling zero in Connected
Node
-32767 to 32767, 0
Node_High_Scale*
Scaling max in Connected
Node
-32767 to 32767, 100
Active_Text
Specify the Active Text
property of the Object
18
Any legal BACnet ASCII string
Inactive_Text
Specify the Inactive Text
property of the Object (See
note
12
)
Any legal BACnet ASCII string
Relinquish_Default
Specify the startup
Relinquish_Default Property
value for this Object (See
note
12
)
Any legal BACnet ASCII string
Custom_Type
This over-writes the
Data_Type with a numerical
value for the Data_Type. e.g.
Analog Value = 2
1..1023
Custom_Prop
This over-writes the Property
with a numerical value for the
property. e.g. Present Value =
85
1..4194303
17
Refer to Appendix A.1 for further information.
18
See the BACnet DFS to determine if a particular object supports this property