Siemens SIMATIC Distributed I/O ET 200eco PN Operating Instructions Manual page 271

Glossary
PROFINET device model
A PROFINET device can have a modular and compact structure. A modular PROFINET device
consists of slots into which the modules are inserted. The modules have channels which are
used to read and output process signals. A compact device has the same design. However, it
cannot be physically expanded, this means that no modules/submodules can be inserted.
A module can be made up of multiple submodules.
PROFINET IO
Within the framework of PROFINET, PROFINET IO represents a communication concept for the
implementation of modular, distributed applications.
PROFINET IO allows you to create automation solutions, which are familiar to you from
PROFIBUS.
Implementation of PROFINET IO is effected on the one hand by means of the PROFINET
standard for automation devices and on the other by means of the STEP 7 engineering tool.
This means you have the same application view in STEP 7 regardless of whether you are
configuring PROFINET devices 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.
PROFINET IO Controller
Device used to address connected IO 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 IO Controllers (remote IO, valve
blocks, frequency converters, switches).
Reference potential
Reference potential for the evaluation / measuring of the voltages of participating circuits.
RoHS
EU Directive 2011/65/EU on the restriction of the use of certain hazardous substances in
electrical and electronic devices regulates the use of hazardous substances in devices and
components. It, together with the respective implementation in national legislation, is
designated as a whole with the abbreviation RoHS (English: Restriction of the use of certain
hazardous substances; German: "Use of certain hazardous substances in electrical and
electronic devices").
SELV
Safety Extra Low Voltage = potential-free safety extra-low voltage
SNMP
SNMP (Simple Network Management Protocol) is the standardized protocol for diagnostics
and parameter assignment of the Ethernet network infrastructure.
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Operating Instructions, 06/2022, A5E01250250-AN
ET 200eco PN