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FS-8700-16 BACnet PTP Serial Driver Manual Page 10 of 32

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4.5 Client Side Map Descriptors

Column Title

Function

Legal Values

Map_Descriptor_Name

Name of this Map Descriptor. This is used for

Object_Name Property. Refer to Appendix A.1.

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)

Function

Function of Client Map Descriptor

Rdbc, Wrbc, Wrbx, Ars

4.5.1 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”

Object_Type

(Alias = Data_Type)

Type of object. Refer to Appendix D.1 for more

information.

AI, AO, AV, BI, BO, BV, MI,

MO, MV, NC

Object_Instance

(Alias = Address)

Instance of the object on the device.

0, 1, 2, 3, …4194303

Property

The BACnet property to be read.

Refer to Appendix D.2

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*

Used to create an array of sequential Object_Instances

on an Object_Type.

1 to max point count of

the FieldServer, 1

Array_Index*

When referencing Multistate properties, allows the user

to specify the index of the property to be read. If 1 is

specified, the first one will be read, if 2 is specified, the

second will be read, etc. If 0 is specified, the driver will

return the total number (count) of array items linked to

the property. If the parameter is not specified, a list of

all items will be returned. Refer to Appendix A.3

0 to max number of array

items in the BACnet

Property, -

4.5.2 Timing Parameters

Column Title

Function

Legal Values

Scan_Interval*

Rate at which data is polled

0-32000, 2s

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 31 32

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