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Introduction
Fieldbus systems are increasing in significance in mechanical and industrial engineering. Not only
can they bring about considerable savings in installation and maintenance costs, but they also offer
an ideal way of creating a digital network of intelligent sensors and actuators with higher-level
automation systems such as programmable logic controllers (PLCs), industrial PCs (IPCs), etc.
Because of the large number of bus systems available on the market, designers and constructors of
industrial plants are these days often required to have a knowledge of more than one system.
Consequently, a universally applicable fieldbus interface which can support different fieldbus
systems, is an absolute necessity for field equipment at sensor/actuator level.
The commissioning and diagnostic facilities of the fieldbus systems are another major point. These
days, diagnosis is generally made via the master module or via specific bus monitors (which can
often only be operated by specialists), so intelligent field equipment should also provide extremely
simple fieldbus diagnostic facilities.
The SEW MOVITRAC
®
31.. inverters meet these requirements and can be linked to systems such as
the open, standardized serial bus systems PROFIBUS-DP, PROFIBUS-FMS and INTERBUS-S by
using fieldbus option pcbs. The MOVITRAC
®
31.. also enables connections to other fieldbus systems
to be made thanks to the powerful, universal structure of its fieldbus interface.
A major feature of the MOVITRAC
®
31.. inverter is the field-bus-independent, uniform behaviour of
the unit (unit profile) when controlled via a fieldbus. Because it operates independently of the fieldbus,
it enables plant constructors and PLC programmers to use different fieldbus systems with the same
applications program, i.e. the actual application concept and program can be implemented very easily
with different fieldbus systems.
Introduction
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MOVITRAC
®
31.. Fieldbus Unit Profile
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