Profibus (Process Field Bus) is a standard for fieldbus communication in automation technology.

There are three variants of Profibus, whereas DP (decentralized periphery) is the most used: Profibus DP for control through a central control in production engineering. A lot of standard diagnostics options are in the foreground. Another application is the linking of "distributed intelligence", i.e. the networking of multiple controls among each. Data rates up to 12 Mbit/sec. on twisted two-wire cables are possible.

The DP application layer was defined in three steps. The origin DP protocol (formalized in 1993) is colloquially named as "DP-V0". The following functions are defined per level:
  • DP-V0 - the cyclic exchange of data and diagnostics.
    Devices with this range of functions are especially used in general automation technology and machine control.
  • DP-V1 - the acyclic data exchange and alarm handling.
    Devices that support these extensions can be found especially in process engineering.


7 Application Layer DP-V0DP-V1
6 Presentation Layer n/a
5 Session Layer n/a
4 Transport Layer n/a
3 Network Layer n/a
2 Link Layer FDL (Fieldbus Data Link)
1 Physical Layer EIA-485

Implemented Protocol Stacks

Profibus-DP, Slave (ORSI)

Profibus-DP, Master

Profibus-DP, Slave

Profibus-DPV0, Slave (Extended Version)

Applicable Products

  • ipConvLite

    inexpensive protocol converter for standardized application

  • ipConvPBM

    Universal protocol converter with integrated PROFIBUS-DP, master interface

  • ipConvPBS

    Universal protocol converter with integrated PROFIBUS-DP, slave interface


  • Power Plant Boxberg
    Power Plant Boxberg, Germany

    Products: ipConvLite ipConvPM
    Protocol Stacks: IEC 60870-5-104, Slave IEC 60870-5-104, Master Modbus, Slave Profibus-DP, Master

    IBIRITE, Brazil

    Products: ipConv
    Protocol Stacks: Profibus-DP, Slave (ORSI) IEC 60870-5-101, Master

    TOTAL AKPO, Nigeria

    Products: ipConvPS
    Protocol Stacks: Profibus-DPV0, Slave (Extended Version) IEC 60870-5-104, Master