FieldServer FS-8700-103 - Manual (Page 11)

FS-8700-103_ATMI_TGM_Serial Manual Page 11 of 28
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4.4.5. Map Descriptor Example #2 – QLA Report.
In this example, a Map Descriptor is created to read the Latest Area Report (QLA). This report contains gas concentration and status
for each port and sensor. Ten Data array elements are required for each port / sensor that is reported. The poistion in the array is
dependent on the port/sensor number. Appendix B provides additional information. By specifying the extra arrays (DA_Bit_Name and
DA_Byte_Name) the driver stores additional information.
// Client Side Map descriptors
Map Descriptors
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, Node_Name Address Length Scan_Interval DA_Byte_Name DA_Bit_Name TGM_Funtion
RD_QLA, DA_CALR, 0, RDBC, Node_A, 0, 300, 1.0s DA_GAS_UNITS DA_QLA_GAS QLA
Gas concentration
value, status,
engineering units index
values, gas name index
values are stored in this
Data Array This parameter may be omitted. If specified
then the Data Array will be used to store
the gas concentration value engineering
units in ASCII. Storage position is
dependent on the port/ sensor number.
This parameter may be omitted. If
specified then the Data Array will
be used to store the gas name in
ASCII. Storage position is
dependent on the port/ sensor
number. Tells the driver
to read the QLA
report.