5 Integration of the module in CANopen
5.1 Representation of process input data
XI/ON: XNE-1SWIRE
09/2011 MN05002016Z-EN
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43
5
Integration of the module in CANopen
5.1
Representation of process input data
The process input data of the XNE-1SWIRE modules is represented by objects
6000
hex
, 6020
hex
, 6021
hex
, and 6022
hex
, 6100
hex
or 6120
hex
for digital input chan-
nels of a XI/ON station. The user can choose between 4 different formats for repre-
senting the values:
•
Only one bit represented by each SUB-index (objects 6020
hex
, 6021
hex
and
6022
hex
)
•
8 bits represented by each SUB-index (object 6000
hex
).
•
16 bits represented by each SUB-index (object 6100
hex
).
•
32 bits represented by each SUB-index (object 6120
hex
).
PDO mapping of object 6000
hex
is always executed by default and automatically for
the first 8 sub-indexes. This corresponds to the 64 bits of the SWIRE feedback inter-
face. If more than 64 process input data items are present, the PDO mapping must
be carried out by the user. A total of 36 groups of 8 bits each can be displayed (288
bits).
If the representation of the data bits is
not
required with the object 6000
hex
or if
another arrangement of the mapped objects is required, PDO mapping must be
carried out by the user.
The structure of the process input data of the XNE-1SWIRE module is described in
Chapter 3.1.1 Process input, Page 25. This description is followed by a table with
explanations on the meaning of the individual bits.
5.2
Representation of process output data
The process output data of the XNE-1SWIRE modules is represented by objects
6200
hex
, 6220
hex
, 6221
hex
, and 6222
hex
, 6300
hex
or 6320
hex
for digital output chan-
nels of a XI/ON station. The user can choose between 4 different formats for repre-
senting the values:
•
Only one bit represented by each SUB-index (objects 6220
hex
, 6221
hex
and
6222
hex
)
•
8 bits represented by each SUB-index (object 6200
hex
).
•
16 bits represented by each SUB-index (object 6300
hex
).
•
32 bits represented by each SUB-index (object 6320
hex
).
PDO mapping of object 6200
hex
is always executed by default and automatically for
the first 8 sub-indexes. This corresponds to the 64 bits of the SWIRE command
interface. If more than 64 process output data items are present, the PDO mapping
must be carried out by the user. A total of 36 groups of 8 bits each can be displayed
(288 bits).
If the representation of the data bits is
not
required with the object 6200
hex
or if a
different arrangement of the mapped objects is required, PDO mapping must be
carried out by the user.
The structure of the process output data of the XNE-1SWIRE module is described in
Chapter 3.1.2 Process output, Page 27. This description is followed by a table with
explanations on the meaning of the individual bits.
