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FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970 email: support@fieldserver.com
5.3.4. Map Descriptor Example.
This example shows a number of server Map Descriptors used to define a table called ‘DISPLAY’. If a client sends a read table
request the driver responds by sending all the appropriate data for every Map Descriptor with the same table name (provided that the
node’s match).
Map_Descriptor_Name, Function, Node_Name, Table_Name, Field_Name, Field_Description,
Field_Units, On_String, Off_String, Data_Array_Name, Data_Array_Offset,
Length,
Display_MD01, passive, Node_1, DISPLAY, MODE,
Desired Mode,
, ON , OFF ,
TABLE DISPLAY, 01, 1
Display_MD02, passive, Node_1, DISPLAY, ALARM ,
Equipment
Status,
, ALARM , NORMAL, TABLE DISPLAY, 02,
1
Display_MD03, passive, Node_1, DISPLAY, CSPT , Controlling Setp, dF, NUMERIC, -, TABLE DISPLAY, 03, 1
Display_MD04, passive, Node_1, DISPLAY, SPT , Controlling Temp, dF, NUMERIC, -, TABLE DISPLAY, 04, 1
Display_MD05, passive, Node_1, DISPLAY, RAT , Space Temp, dF, NUMERIC, -, TABLE DISPLAY, 05, 1
Display_MD06, passive, Node_1, DISPLAY, SAT , Supply Air Temp, dF, NUMERIC, -, TABLE DISPLAY, 06, 1
Display_MD07, passive, Node_1, DISPLAY, FANSTAT, Fan Mode, , ON , OFF, TABLE DISPLAY, 07, 1
Display_MD08, passive, Node_1, DISPLAY, CCAP , Cooling Capacity, % , NUMERIC, -, TABLE DISPLAY, 08, 1
Display_MD09, passive, Node_1, DISPLAY, HCAP , Heating Capacity, % , NUMERIC, - , TABLE DISPLAY, 09, 1
Display_MD10, passive, Node_1, DISPLAY, FLTSTAT, Filter Status
,
, DIRTY , CLEAN, TABLE DISPLAY, 10, 1
All the server Map
Descriptors are
passive.
If the value of the array named
TABLE_DISPLAY, offset 10 is 1
then the FieldServer will report he
FLTSTAT variable as DIRTY. If it
is zero then the variable’s state
will be reported as clean.
By using the NUMERIC
keyword, the driver is
told to report the value of
the variable HCAP as a
number. Thus the driver
sends the value of the
array named
TABLE_DISPLAY offset
9 to the client.