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4.5.3.4
PROFIBUS communication
Parameter assignment
The DP master transfers parameters during initialization of the DP slave. This includes the
transfer of standard parameters and specific SIDOOR parameters for the device. The
specific parameters are written in the GSD file. No user data can be exchanged without
initialization.
The DP master sends the parameters to the DP slave in a set parameters telegram. The DP
slave answers with a short acknowledgment.
The set parameters telegram consists of user data with 7 to 244 bytes. The first 7 bytes of
the parameters are bindingly specified in the standard. Bytes 8 to 10 are permanently written
in DP-V1, and are not used here. The subsequent bytes are manufacturer-specific. Another
8 bytes are reserved for this with the PROFIBUS module.
ATD4xxW Door Controller for Industrial Applications
System Manual, 01/2017, A5E38080677-AB
Controllers
4.5 Relay and fieldbus interfaces
129
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