SMC Networks FieldServer FS-8700-16 BACnet PTP, Руководство пользователя

Страница: 10 / 34

BACnet PTP Serial Driver Manual
Page 10 of 34
5.4.1 Client Side Connection Par am eters
Column Title Function Legal Values
Node_Name Name of Node to fetch data from.
One of the Node_Names
specified in Section
5.3
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,
-
Write_Priority*
Allows the driver to specify the write
priority used to write an output.
1..16, 16
Linked_Map_Descriptors*
This parameter allows the linking of Map
Descriptors to an active read or write Map
Descriptor in order to construct a
ReadPropertyMultiple or
WritePropertyMultiple transaction. Refer
to
Appendix A.9
.
The name of a previously
defined active Map Descriptor,
-
Length*
When the optional Length parameter is
set to a value N, the Map Descriptor will
include N consecutive instances of the
specified Object_Type. For example, if a
Map Descriptor specifies Object_Type,
Address 4 and Length 3, this means that
the AO instances 4, 5 and 6 will be
included in the read or write transaction.
The corresponding Data Array values are
in consecutive positions in the Data Array,
starting at the specified
Data_Array_Offset.
Any positive integer that falls
between the range of the
Data_Array_Offset and the
Data_Array_Length as
specified in
Section
4
, -
Refer also to
Appendix A.9
5.4.2 Tim ing Param eters
Column Title Function Legal Values
Scan_Interval* Rate at which data is polled 0-32000, 2s