Siemens SIMATIC NET PROFIBUS Manual de servicio Pagina 90

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Description of the DP Functions, Data, and Error Codes
DP Base Programming Interface for CP 5613/CP 5614
90
C79000-G8976-C108-01
4.1.14 DP_ds_write
Purpose
With this function, the master can send data to a slave. The data is sent parallel to
cyclic operation.
This does not involve the slave output but rather an additional data packet with
addressing using the slot and index of a slave. The structure and meaning of the
data can vary depending on the slave type.
Note
Writing is executed
asynchronously
. The result must be fetched with
DP_get_result.
Syntax
DPR_DWORD DP_ds_write ( DPR_DWORD user_handle, // in
DPC1_REQ_T *request // in
DP_ERROR_T *error ); // out
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