Siemens ET 200pro Operating Instructions Manual page 534

Small, extremely rugged and high-performance i/o system with ip65/66/67 degree of protection
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Glossary
PROFINET components
A PROFINET component encompasses the entire data of the hardware configuration, the
parameters of the modules, and the corresponding user program. The PROFINET
component is comprised of:
● Technological function
The (optional) technological (software) function includes the interface to other PROFINET
components in the form of interconnectable inputs and outputs.
● Device
The device is the representation of the physical automation device or field device
including the IO devices, sensors, actuators, mechanics, and device firmware.
PROFINET device
Each device has at least one Industrial Ethernet connection. A PROFINET device can also
have a PROFIBUS interface as master with proxy functionality.
PROFINET IO controller
Device used to address connected I/O devices. That means: The IO controller exchanges
input and output signals with assigned field devices. The IO controller is usually the
controller running the automation program.
PROFINET IO device
Distributed field device which is assigned to one of the I/O controllers (e.g. remote IO, valve
terminals, frequency converters, switches).
PROFINET IO
As part of PROFINET, PROFINET IO is a communication concept that is used to implement
modular, distributed applications.
PROFINET IO allows you to create automation solutions which are familiar to you from
PROFIBUS.
PROFINET IO is implemented by the PROFINET standard for automation devices on the
one hand, and on the other hand by the engineering tool STEP 7. This means that you have
the same application view in STEP 7, regardless of whether you configure PROFINET or
PROFIBUS devices. Programming your user program is essentially the same for
PROFINET IO and PROFIBUS DP if you use the extended blocks and system status lists for
PROFINET IO.
Reference potential
Reference potential for the evaluation/measuring of the voltages of participating circuits.
534
ET 200pro distributed I/O system
Operating Instructions, 03/2013, A5E00335544-08

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