Lenze EMF2111IB - Manual (Page 48)

Data transfer
Examples for the configuration of PI/PO data
5
2111 INTERBUS fieldbus module
5.6
5.6.4
L
5.6-26 EDSIBS-1.0-06/2003
The PO data word 2 is to be assigned to the percentage setpoint (index = 6052
hex
).
Procedure:
1. Data type derived from the code table ^ 5.6-42.
à The data type of the parameter ”Percentage setpoint“ is I16, i.e. it is a word parameter (16 bit). The code table
for the parameter ”Process output data description structure“ (index = 6001
hex
) shows that the PO data word 2 is
to be entered under subindex 6 and 7 (word parameters).
The subindex of the parameter ”PO data description“ (index = 6001
hex
) can be described with the PCP service
”Write“.
) ) ) )
Note!
The description of PO data results in inconsistent data, as the
data are exchanged between controller and INTERBUS master in
very short cycle times.
Therefore, the PO data are automatically inhibited when changing
the PO data configuration. After the adaptation of the PO data to
the new configuration, the data can be enabled via the parameter
” PO data enable” (index 6002
hex
).
2. Enter the index of the parameter ”Percentage setpoint“: Write
(index = 6001
hex
, subindex = 6
hex
, value = 6054
hex
)
3. Enter the subindex of the parameter ”Percentage setpoint“: Write
(index = 6001
hex
, subindex = 7
hex
, value = 0
hex
)
) ) ) )
Note!
The index must be changed to zero to change a subindex.
You can then change the subindex before the index.
4. Enter the index of the parameter ”PO data enable“ (6002
hex
) to enable process data :
Write (index = 6002
hex
, subindex = 0
hex
, value = FF
hex
)
Now the PO data can be read again from the controller.
) ) ) )
Note!
If a parameter is configured for PO data (e.g. the parameter
” Control word“ (6040
hex
) in Lenze setting), it is not possible to
write this parameter directly via its index (example: index =
6040
hex
)
PO data configuration
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