Glossary
PROFINET with STEP 7 V15
Function Manual, 12/2017, A5E03444486-AH
265
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- European Fieldbus standard.
A PROFIBUS device has at least one PROFIBUS interface with an electrical (RS485) or
optical (polymer optical fiber, POF) interface.
A PROFIBUS with DP protocol that complies with EN 50170. DP stands for distributed I/O
(fast, real-time capable, cyclic data exchange). From the perspective of the user program,
the distributed I/Os are addressed in exactly the same way as the centralized I/Os.
PROFIBUS Users Organization
Technical committee dedicated to the definition and development of the PROFIBUS and
PROFINETstandard. Additional information can be found on the Internet (Page ).
Function for energy saving in the process, for example, during pause times by briefly
switching off the entire system via standardized PROFIenergy commands.
Open component-based industrial communication system based on Ethernet for distributed
automation systems. Communication technology promoted by the PROFIBUS Users
Organization.
A PROFINET device always has a PROFINET interface (electrical, optical, wireless). A lot of
devices also have a PROFIBUS DP interface to connect PROFIBUS devices.
Communication concept for the realization of modular, distributed applications within the
scope of PROFINET.
PROFINET IO is based on switched Ethernet with full-duplex operation and a bandwidth of
100 Mbps.
Device used to address the connected IO devices. This means that the IO controller
exchanges input and output signals with assigned field devices. The IO controller is often the
controller on which the automation program runs.
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