FieldServer Dart FS-8700-78 - Manual (Page 32)

Driver Manual
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Page 30
6.1.6 Advanced Map Descriptor: Example 3 - Using the 'special' parameter.
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, node_name, Address, Length, DA_Func, DA_Field, DA_Method
,DA_Bytcnt, DA_Offset, DA_Elecnt
Scan_Interval
A1, DA_AI3, 0, rdbc, Node_A, 0, 1 , dap-stat, special, 1 4, 10, 1, 5
You can use
specials as rdbc
and passive map
descriptors.
See table
6.3
for
descriptions
on how these
extraction
methods work.
It would be
sensible for
DA_AI3 to be an
array of FLOATs
because extraction
method(=1)
returns a floating
point number.
Performs a DAP
status query
From the data bytes
returned by the slave,
extract 4 bytes
starting at
byte 10
and
apply method 1
to convert the bytes
before writing them to
the FieldServer data
Once you use
the parameter
'special' you
must specify the
additional
parameters.