FieldServer Dart FS-8700-78 - Manual (Page 26)

Driver Manual
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another value for DA_Assoc.
Da_Freq Used only for connection to
DART’s.
Specify in milliseconds the
interval at which you want a
wrbc/rdbc map descriptor to be
executed.
When using wrbc/rdbc’s to a
dart device set the scan interval
to 5.0s and set this parameter to
a number greater than 180000
(3 minutes). An interval of
300000 (5 minutes is
recommended).
DA_Method
Ψ
Specifies the extraction method.
Such as Hex-ASCII to decimal
number in 10's of a degree, See section 6.3 for a list of
possible values.
DA_Bytcnt
Ψ
Specifies the number of bytes
that are to be processed by the
method specified above. For
method#6 which processes an
array of elements the
DA_Bytcnt specifies the
number of bytes that constitute
each element of the array. >= 1
DA_Offset
Ψ
An offset into the data
composite that is returned when
the slave is polled. The offset is
the number of bytes from the
first data byte. 0 to the length of the data
composite. No validation is
performed.
DA_Elecnt
Ψ
Number of elements that are
produces by the extraction
method. >= 1
Ψ
:
These parameters are only required for custom data extractions not provided for with DA_Field
parameter.
6.1.1 DA_Func Parameter - Permitted values.
The driver supports a limited subset of the Dart Poll & Response Functions. The selection
of the sub-set is based on the identification of useful & practical functions.