Technologies Computer Driver Instruction Manual

FS-8700-16 BACnet PTP Serial Driver Manual Page 7 of 20
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldserver.com
Tel: [phone] Fax: [phone] Toll Free: 888-509-1970 email: [e-mail]
4.5. Client Side Map Descriptors
4.5.1. FieldServer Related 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 above
Data_Array_Offset
Starting location in Data
Array
0 to maximum specified in
“Data Array” section above
Function
Function of Client Map
Descriptor
RDBC, WRBC, WRBX
4.5.2. Driver Related Map Descriptor Parameters
Column Title Function Legal Values
Node_Name Name of Node to fetch data from
One of the node names
specified in “Client Node
Descriptor” above
Data_Type Data type in FieldServer
AI, AO, AV, BI, BV, MI,
MO, MV
6
Object_Instance Address of object 0, 1, 2, 3, …
Property* The BACnet property to be read
Present_Value
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
Length*
Number of objects that will be polled
using the READ_PROPERTY_
MULTIPLE service. See Appendix B.3
2-29, 1
Write_Priority*
Allows the driver to specify the write
priority used to write an output. See
also Appendix B.2
1..16, 16
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
4.5.3. Timing Parameters
Column Title Function Legal Values
Scan_Interval* Seconds per scan
0-32000, 2
6
Refer to Appendix A.1 for further information.