Distributed I/O System ET 200S

Glossary
PROFINET components
A PROFINET component includes all data of the hardware configuration, the parameters of
the modules, and the associated user program. The PROFINET component comprises the
following elements:
• Technological function
The (optional) technological (software) function includes the interface to other PROFINET
components as interconnectable inputs and outputs.
• Device
The device represents the physical automation device or field device, including the IO,
sensors and actuators, mechanical system, and device firmware.
PROFINET device
A PROFINET device always has at least one Industrial Ethernet connection. Additionally, a
PROFINET device can have a PROFIBUS connection: as master with proxy functions In
exceptional cases the PROFINET device can have several PROFIBUS connections (e. g.
CP 5614).
PROFINET IO controller
Device by means of which connected IO devices are addressed. This means the IO
controller exchanges input and output signals with assigned field devices. The IO controller
is often the controller in which the automation program is executed.
PROFINET IO
Within the context of PROFINET, PROFINET IO is a communication concept for
implementing modular, distributed applications.
With PROFINET IO, you can create automation solutions using the trusted and familiar
methods of PROFIBUS.
Implementation of PROFINET IO is effected on the one hand via the PROFINET standard
for automation devices and, on the other by means of the engineering tool, STEP 7.
This means that in STEP 7 you have the same application view irrespective of whether you
are configuring PROFINET or PROFIBUS devices. The programming of your user program
is identical for PROFINET IO and PROFIBUS DP if you are using the blocks and system
status lists which have been extended for PROFINET IO.
PROFINET IO Device
Distributed field device assigned to one of the IO controllers
(e.g. remote IO, valve islands, frequency converters, switches).
Provider-consumer principle
By contrast with PROFIBUS DP, both partners on the PROFINET IO are independent
providers in the sending of data.
ET 200S
Manual, 12/2005, A5E00514527-03 Glossary-7