FieldServer Dart FS-8700-78, Руководство пользователя

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Driver Manual
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Page 29
6.1.5 Advanced Example 2
The DAP-II Status query returns 14 bytes of errors & status information. The arrangement and meaning of these bytes is defined by the Data Aire
Corporation and is also dependent on the type of DAPII module being polled.
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, node_name, Address, Length, DA_Func, DA_Field, Scan_Interval
A1,
DA_AI1, 0, rdbc, Node_A, 0, 1 , dap-stat, errors ,5
A2, DA_DI1, 1, passive, Node_A, 0, 1 , dap-stat, bitErrors ,5
The 'errors' key
word returns 14
bytes, thus we
DA_AI1 should be
a BYTE array.
Each byte will
have values 0-15
to represent the
value of the bits in
each byte.
The bitErrors
extracts the same
data from the DAP
but presents it as a
series of 14x8 bits.
Thus make
Slave is a DAP
and we are
reading status
information.
BitErrors is a synonym for errors. The
data is extracted using a different data
format.
Data arrangement and meaning of each
error is defined by Data Aire Corp.
Example: Bit 24 is a LOW TEMP
WARNING for DAPII-044/8/9 units.
Example: Bit 09 is a HUMIDITY
SENSOR PROBLEM for a DAPII-080
unit.