FieldServer Dart FS-8700-78 - Manual (Page 10)

Driver Manual
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Page 8
4.4 Client Side Map Descriptors
4.4.1 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
above
Data_Array_Location Starting location in Data Array 0 to maximum specified in
“Data Array” section above
Function Function of Client Map
Descriptor
The use of the WRBX keyword
is recommended for DART
configurations as
communications are minimized. RDBC, WRBC, WRBX,
Passive
4.4.2 Timing Parameters
Column Title Function Legal Values
Scan_Interval Rate at which data is polled >0.1s
4.4.3 Driver Specific 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
Length Length of Map Descriptor 1 The length must always be
set to one.
Address Starting address of read block Not required for client
configuration. This parameters
is used in simulation
configuration only.
The following parameters apply only to the Dart Driver.
DA_Func*
Tell the driver to poll the device
for all the data that is available.
The data is device specific.
Other uses of this parameter are
permitted. These uses are
discussed in the Advanced
Topics section of this manual. Everything
See table 4.4.3.1 for a map of
how the data is stored in the
Fieldserver data arrays