User`s guide

3
3. PROFINET I/O
Introduction
This section is supported only with EDS-400A-PN, EDS-510E, and EDS-G500E series devices.
PROFINET is a communication standard for automation of PROFIBUS & PROFINET International (PI). It is
100% Ethernet-compatible as defined in IEEE standards. With PROFINET, applications can be implemented
for production and process automation, safety applications, and the entire range of drive technology. With
its integrated Ethernet-based communication, PROFINET satisfies a wide range of requirements, from data-
intensive parameter assignment to extremely fast I/O data transmission.
PROFINET I/O is used for data exchange between I/O controllers (PLC, etc.) and I/O devices (field devices).
This specification defines a protocol and an application interface for exchanging I/O data, alarms, and
diagnostics. And its real-time (RT) solution allows response time in the range of 5 ms, which corresponds to
today’s PROFIBUS DP applications.
PROFINET Environmental Introductions
PROFINET Networking Structure
PROFINET I/O follows the Provider/Consumer model for data exchange. PROFINET forms logical link
relationships between network character types. They are shown below.
There are 3 major character types defined by PROFINET I/O, including I/O controller, I/O supervisor, and
I/O devices. Switches are considered I/O devices.
I/O Controller
This is typically the programmable logic controller (PLC) on which the automation program runs. The I/O
controller provides output data to the configured I/O-devices in its role as provider and is the consumer of
input data of I/O devices.