Product manual

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The Usr_Prm_Data is used to specify the Tag numbers of the parameters that are to be read or
written as Process Data. Each parameter is represented by 2 bytes in the Usr_Prm_Data, these
specify the Tag number in High-Byte/Low-Byte order.
The first 3 bytes of the Usr_Prm_Data are reserved for the future implementation on the DPV1
Profibus extensions. These must be set to zero. The High-Byte of the first Tag number must be in
the 4th byte.
The Usr_Prm_Data may be up to 63 Bytes long. If less than 63 Bytes are sent, the length must be
3 x 2n, where n is a number between 0 and 30. Unused Bytes must be set to zero and must be at
the end of the Tag declarations.
The number of Tags declared must match the number of Inputs, Outputs and Input-Outputs
declared to be in the Process Data by the Cfg_Data.
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