Map descriptor example – FieldServer Canatal Satchnet Driver FS-8700-59 User Manual
Page 14
FS-8700-59 Canatal Driver Manual
Page 14 of 19
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6.3.4 Map Descriptor Example
In this example the FieldServer is emulating a Canatal device addressed as node 11. It is not possible to have the FieldServer emulate two devices of different series
addressed as node 11.
Map_Descriptor_Name
, Data_Array_Name
, Data_Array_Offset
, Function
, Node_Name
, Address
, Length
, Cana_Series
, Cana_Table
DEV11_TBL5
, DA_AI3
, 0
, Passive
, Node_12
, 0
, 3
, 4
, 5
Server side Map Descriptors
are passive. They respond to
read / write commands from a
Canatal master.
The node name
connects this Map
Descriptor to a node
specification.
Corresponds to the offset into the data table being requested.
If the request is for offset 2 (3rd element of the table), then the FieldServer
responds with data from array DA_AI3 element 10(offset into array)+3(3rd element).
If the request was for offset 5 then this Map Descriptor would not be capable of
processing the response. (starts at 0 and is 3 elements long.)
The Canatal device series number
the FieldServer will emulate.
The number of the
Canatal device's data
table the FieldServer
will emulate