Festo Электромотор MTR-DCI - Manual (Page 127)

5. Commissioning
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Festo P.BE-MTR-DCI-PB-EN en 1209a
5.7.2 Composition of the cyclical I/O data
Concept A master exchanges the following data with the FHPP:
– Control and status bytes
– Record number or nominal position in the output data
– Feedback of actual position and record number in the
input data
– Additional mode-dependent nominal and actual values
– Parameters as per FPC
The FHPP protocol always provides 8 input bytes and 8 out-
put bytes for this. The first 2 of these bytes are fixed. They are
retained in each operation mode, and control the enabling of
the MTR-DCI and the operation modes. Bytes 3 to 8 depend
on the operation mode selected. Further control or status
bytes and nominal and actual values can be transferred here.
In the cyclical data a further 8 input bytes and 8 output bytes
are permitted for transferring parameters in accordance with
the FPC protocol.
The acyclical data channel of the PROFIBUS (DPV1) is also
supported.