PROFIBUS Manual

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Navigation: Introduction > System structure

Relationships

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Individual stations in a DP system have a variety of relationships with each other:

Relations in a DP system

These individual relationships between masters and slaves (MS) have different tasks and properties:

Cyclic data transmission:

MS0 =

DP master, class 1 with DP slave cyclic with DP-V0 protocol used

Acyclic data transmission:

MS1 =

DP master, class 1 with DP slave acyclic with DP-V1 protocol used

MS2 =

DP master, class 2 with DP slave acyclic with DP-V1 protocol used

The above illustration also includes a relationship between masters (MM). This is only used very rarely in practice and is therefore not described in greater detail in this volume. You will find further information about this relationship is chapter 9 of Manfred Popp's book.

The different stations have implemented individual protocols in their structure:

Protocols in a DP system