Product overview
1.4 What is PROFINET IO?
Fail-safe signal modules
18
Installation and Operating Manual, 01/2010, A5E00085586-10
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
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.
●
The quantity framework is extended in accordance with the options offered on
PROFINET IO. Parameter limits are not exceeded during configuration.
●
The transmission rate is 100 Mbps.
●
The configuration interface for users is generally the same as that on PROFIBUS DP (the
system is configured with
HW Config).
Additional information on PROFINET IO is available in the PROFINET system description
(
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.
(70
3*3&
IO-Controller
S7-300
IO-Device
IO-Device
IO-Device
ET 200pro
PROFINET IO
(Industrial
Ethernet)
Switch
Switch
Switch
Switch
IE/PB-
Link
PROFIBUS DP
ET 200S
OP 25
max. 100 m
Figure 1-2
Typical structure of a PROFINET IO network