What Is Profinet Io - Siemens S7-300 Installation And Operating Manual

Product overview

1.4 What is PROFINET IO?

1.4 What is PROFINET IO?
Definition
PROFINET IO is an open transmission system with real-time functionality defined in
accordance with the PROFINET standard. This standard defines a manufacturer-
independent communication, automation and engineering model.
Accessories for wiring the PROFINET components are available in industrial quality.
● PROFINET discards the hierarchical PROFIBUS master/slave concept and deploys a
● The quantity framework is extended in accordance with the options offered on
● The transmission rate is 100 Mbps.
● The configuration interface for users is generally the same as that on PROFIBUS DP (the
Additional information on PROFINET IO is available in the PROFINET system description
(http://support.automation.siemens.com/WW/view/en/19292127).
Topology of a PROFINET IO network
The figure below shows a typical PROFINET IO network topology. Existing PROFIBUS
slaves can be integrated using an IE/PB link.
IO-Controller
S7-300
Switch
IE/PB-
Link
PROFIBUS DP
Figure 1-2 Typical structure of a PROFINET IO network
18
provider/consumer principle instead. The modules of an I/O device that will be subscribed
to by an IO controller are defined within the engineering phase.
PROFINET IO. Parameter limits are not exceeded during configuration.
system is configured with
IO-Device
max. 100 m
HW Config
).
IO-Device IO-Device
ET 200pro ET 200S
Switch
Installation and Operating Manual, 01/2010, A5E00085586-10
OP 25
Switch
Switch
PROFINET IO
(Industrial
Ethernet)
Fail-safe signal modules