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Overview of PROFIBUS DP
2.1
Where Does PROFIBUS DP Fit In?
PROFIBUS - The Worldwide Fieldbus Strategy
The trend towards reducing costs in automation engineering has meant that
programmable controllers (PLCs), PCs, drives, transducers and sensors are being
networked more and more. This has resulted in greater distribution of these field
devices using a fieldbus as the common communications medium for exchanging
information.
The demand for an open, heterogeneous fieldbus system representing a safe and
long-term investment for the user has been met by PROFIBUS. PROFIBUS is a
bus system for communication between programmable controllers or PCs and field
devices based on the European standard EN 50 170, Volume 2. This means that
both users and manufacturers can be certain about long-term investments and
guarantees "openness" for all applications conforming with the standard worldwide.
With more than 2 million network nodes in over 200,000 applications, PROFIBUS
is the most successful open fieldbus having proved itself in applications in
production automation, process automation, drive engineering, and building
automation.
The PROFIBUS users organization represents a widespread information forum for
PROFIBUS manufacturers and users. This is an organization involving more than
800 users, manufacturers and advisers from more than 20 countries worldwide. As
a result of this cooperation, more than 1600 products are now available for use in
PROFIBUS systems.
Siemens has supported PROFIBUS for many years as an optimized fieldbus
solution and reliable investment for the user and supplies both products and
complete systems. Apart from the programmable controllers (PLCs), devices such
as network components, PC communications processors, and field devices for
PROFIBUS are also included in the wide range of products.
The Role of the PC in PROFIBUS
Apart from the trend towards distribution, the standard PC is also becoming more
important as an automation tool particularly in control tasks and for plant
visualization thanks to its increased performance and widespread availability.
14
DP Base Programming Interface for CP 5613/CP 5614
C79000-G8976-C108-02
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