Map descriptor example – FieldServer Canatal Satchnet Driver FS-8700-59 User Manual

Page 14

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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

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