Interfaces, Networks and Data Communication for the S7-400
5-9
Automation System S7-400 Configuration and Use
A5E0044271 1-02
PROFINET IO
PROFINET is an open and vendor-independent Industrial Ethernet standard for
automation. PROFINET IO allows you to connect I/O directly to Industrial Ethernet.
Typical Configuration
PROFINET IO operates with a provider-consumer model. The provider is the
sender , who transmits his data without request from the communication partner.
The consumer process the data. The assignment as a provider or consumer is
specified in the configuration.
The following device types are used for PROFINET IO.
• IO controller: The controller of the automation system
• IO devices: The distributed I/O that is assigned to an IO controller.
• IO supervisor: A programming device, PC or HMI device for commissioning and
diagnostics.
• IE PB Link PN IO: This enables the integration of existing PROFIBUS fieldbus
system without having to change the existing devices.
Configuration
You configure the IO devices with STEP 7. The devices are uniquely identified by
description files (General Station Description, GSD). The description files can be
importedinSTEP7.
Communication Processor CP 443-1 Advanced
The communication processor CP 443-1 Advanced is designed for operation in an
S7-400 automation system (not in H systems or H CPUs). It enables the
connection of the S7-400 to Industrial Ethernet.
With its services for PROFINET IO, CP 443-1 Advanced allows direct access to
PROFINET IO devices via Industrial Ethernet
Characteristics of PROFINET IO
Table provides you with an overview of the characteristics of the PROFINET IO.
Table 5-3 Characteristics of PROFINET IO
Connectable devices Field devices such as drives, valves,
distributed I/O
Maximum number of devices 125
Data record length Max. 1432 bytes
Transfer rates 100 Mbps switching technology
Typical reaction time 1ms
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