Operation
7.6 Communication via PROFINET IO
SINAMICS DCP
246 Operating Instructions, 09/2019, A5E34382853K
7.6 Communication via PROFINET IO
7.6.1 General information about PROFINET IO
General information
PROFINET IO is an open Industrial Ethernet standard for a wide range of production and
process automation applications. PROFINET IO is based on Industrial Ethernet and uses
TCP/IP and IT standards.
Deterministic signal processing in real-time is important in industrial networks. PROFINET IO
satisfies these requirements.
International standard IEC 61158 ensures open, multi-vendor systems.
PROFINET IO is optimized for high-speed, time-critical data communication at field level.
PROFINET IO
Within the context of Totally Integrated Automation (TIA), PROFINET IO is the systematic
development of the following:
● PROFIBUS DP, the established fieldbus
● Industrial Ethernet, the communications bus for the cell level.
Experience gained from both systems was integrated into PROFINET IO. An Ethernet-based
automation standard defined by PROFIBUS International (PROFIBUS user organization),
PROFINET IO is a manufacturer-independent communication and engineering model.
PROFINET IO defines every aspect of the data exchange between IO controllers (devices
with what is known as "master functionality") and the IO devices (those with what is known
as "slave functionality") as well as carrying out parameterization and diagnostics. A
PROFINET IO system is configured in virtually the same way as a PROFIBUS system.
A PROFINET IO system is made up of the following devices:
● An IO controller controls automation tasks.
● An IO device is controlled and monitored by an IO controller. An IO device consists of
several modules and submodules.
● An IO supervisor is an engineering tool, typically based on a PC, with which the individual
IO devices (drive units) are parameterized and diagnosed.
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