A Typical Profinet Io Network Structure; What Is Profinet Io? - Siemens SIMATIC ET 200S Manual

Product Overview
1.2

What is PROFINET IO?

PROFINET IO is the open transmission with realtime functions defined in
accordance with the PROFINET standard.
The standard defines a manufacturer-independent communication, automation and
engineering model.
Industrial quality connection designs are available for wiring the PROFINET
components.
• PROFINET does not use the hierarchical PROFIBUS master-slave principle. A
provider-consumer principle is used instead. The planning process specifies
which modules of an I/O device will be subscribed to an I/O controller.
• The quantities are extended in accordance with the options offered by the
PROFINET IO. Parameter limits are not exceeded during configuration.
• The transmission rate is 100 Mbps.
• The user view during configuration is generally the same as that on the
PROFIBUS DP (STEP 7 → HWCONFIG is used for configuration).
Structure of a PROFINET IO network
The figure below illustrates a typical PROFINET IO network structure. Existing
PROFIBUS slaves can be integrated by an IE/PB link.
I/O controller
S7-300
Switch
IE/PB
link
PROFIBUS DP
Figure 1-2

A typical PROFINET IO network structure

1-4
I/O device
ET 200S
Switch
max. 100 m
I/O device
ET 200S
OP 25
Switch Switch
ET 200S Distributed I/O System
Programming
device
Switch
PROFINET IO
(Industrial
Ethernet)
EWA-4NEB 780602402-12