Siemens Simatic CFU Commissioning Manual page 160

Glossary
PROFINET
PROcess FIeld NETwork, open Industrial Ethernet Standard, which continues PROFIBUS and
Industrial Ethernet. A cross-manufacturer communication, automation and engineering model
by PROFIBUS International e.V., defined as an automation standard.
PROFINET IO controller
Device used to address connected I/O devices (e.g. distributed I/O systems). This means: The
IO controller exchanges input and output signals with assigned I/O devices. The IO controller
often corresponds to the CPU in which the automation program is running.
PROFINET IO
Communication concept for the realization of modular, distributed applications within the scope
of PROFINET.
PROFINET IO device
Distributed field device that can be assigned to one or more IO controllers (e.g. distributed I/
O system, valve terminals, frequency converters, switches).
PROFIsafe
PROFIsafe (PROcess FIeld safety) is defined for PROFIBUS and PROFINET in the standard
IEC 61784-3.
PROFIsafe is a current standard for secure communication between safety-related devices
and the automation system via the employed fieldbus. The PROFIsafe profile includes both
the format of the user data as well as the protocol for secure communication. PROFIsafe
enables the realization of safety-related automation tasks up to SIL3 (Safety Integrity Level).
Proof-test interval
Period after which a component must be forced to fail-safe state, that is, it is either replaced
with an unused component, or is proven faultless.
Provider-Consumer principle
Principle of data communication on the PROFINET IO: in contrast to PROFIBUS, both partners
are independent providers when sending data.
Push-in terminal
Terminal for the tool-free connection of wires.
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Commissioning Manual, 07/2018, A5E39252870-AC
SIMATIC CFU