Communication systems

Fieldbus

AUMA fieldbus devices

AUMA India integral starter actuators are available with 2-wire control. The actuators are availble with the following open industrial protocols.

Profibus DP
Modbus RTU

Overall, AUMA devices are available with binary and analogue inputs to connect additional sensors to the fieldbus.

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Profibus

Profibus DP is the ideal solution for plant automation due to its simple and robust physical layer (RS-485) and the different service levels DP-V0 (fast cyclic and deterministic data exchange), DP-V1 (acyclic access to device parameters and diagnostic data) as well as DP-V2 (further functions such as time stamp or redundancy).

International standard (www.profibus.com)
Worldwide distribution
Large installation base
Standardised integration within the DCS (FDT, EDD) Large selection of devices
Typical applications: Power plants, sewage treatment plants, water treatment plants, tank farms

Modbus

In comparison with other fieldbus technologies, Modbus is simple but has a multi-functional fieldbus protocol. It offers all services required for plant automation, e.g. exchange of simple, binary information, analogue values, device parameters or diagnostic data.

For plant Automation and similar to Profibus, the simple and robust physical layer RS-485 is often used.

On the basis of this physical layer, Modbus supports various telegram formats, e.g. Modbus RTU. Using the Modbus TCP/IP version based on Ethernet, vertical integration into a host Automation system is often implemented.

International standard (www.modbus.org)
Simple protocol
Worldwide distribution
Largely sufficient for many simple automation tasks
Typical applications: Water and wastewater treatment plants,
pumping stations, tank farms

Europe

Asia and Pacific

Europe

Asia and Pacific

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Fieldbus

AUMA fieldbus devices

Fieldbus

AUMA fieldbus devices

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