Profinet Io; Introduction - Siemens SIMATIC PCS 7 CPU 410-5H System Manual

PROFINET IO

6.1

Introduction

What is PROFINET IO?
PROFINET IO is the open, cross-vendor Industrial Ethernet standard for automation. It
enables continuous communication from the business management level down to the field
level.
PROFINET IO meets the stringent requirements of industry, for example:
● Industry-compatible installation technology
● Real-time capability
● Cross-vendor engineering
There are a wide range of products available for PROFINET IO, including active and passive
network components, controllers, distributed field devices, and components for industrial
wireless LAN and industrial security.
Information about the use of I/O connected to the PROFINET interface is available in
Chapter System redundancy (Page 70).
With PROFINET IO a switching technology is implemented that allows all stations to access
the network at any time. In this way, the network can be used much more efficiently through
simultaneous data transmission of multiple nodes. Simultaneous sending and receiving is
enabled through the full-duplex operation of Switched Ethernet.
PROFINET IO is based on Switched Ethernet full-duplex operation and a bandwidth of 100
Mbit/s.
In PROFINET IO communication, a portion of the transmission time is reserved for cyclic,
deterministic data transmission (real-time communication). This allows you to split the
communication cycle into a deterministic and an open part. Communication takes place in
real-time.
The direct connection of distributed field devices (IO devices, such as signal modules) to
PROFINET IO supports a consistent diagnostics concept for efficient localization and
elimination of any errors.
Note
No changes to the PROFINET IO interface during operation
I/O components that are connected to a PROFINET IO interface as well as parameters of
the PROFINET IO interface cannot be modified during operation.
CPU 410-5H Process Automation
System Manual, 09/2014, A5E31622160-AB
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