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Profinet

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Profinet (Process Field Network) is the open industrial Ethernet standard for communication in the automation technology.

Profinet uses TCP/IP and IT standards. It is capable for real-time Ethernet and enables the integration of fieldbus systems. The Profinet concept is modular. It basically differs in the perception of Profinet IO and Profinet CBA. Both channels are able to communicate at the same time and on the same bus system either individually or in combination (parallel operation). In the broader sense, Profinet IO can be considered as direct successor of Profibus DP.

  1. Profinet IO (Input - Output) is created in order to connect decentralized periphery with a controller. The available functions and the real-time attributes are divided into the three conformance classes CC-A, CC-B and CC-C with respect of the different applications.
  2. Profinet CBA (Component Based Automation) is intended for component based communication via TCP/IP and the real-time communication in the modular plant engineering.
A Profinet IO system consists of the following device types:
  • IO controller for automation tasks
  • IO device controlled by an IO controller. The IO device consists of several modules and submodules. The submodules contain individual input and output signals.
  • IO supervisor is a development tool (typically based on a PC) in order to parametrize and diagnose specific IO devices.

ISO/OSI Model

7 Application Layer IO services & protocols
RPC
6 Presentation Layer n/a
5 Session Layer n/a
4 Transport Layer UDP
3 Network Layer IP, ARP, SNMP, DHCP
2 Link Layer CSMA/CD, VLAN, DCP, MRP, MRRT, LLDP
1 Physical Layer 100BASE-TX, 100BASE-FX

Implemented Protocol Stacks

Profinet-IO, Server

Applicable Products

ipConvLiteipConvLiteinexpensive protocol converter for standardized application
start price 1.800,- €
Details...
product/ipConvLite/en/ipConvLite_EN.pdf
ipConvPNMipConvPNMUniversal protocol converter with integrated PROFINET-IO, master interface
Available soon !
Details...
ipConvPNSipConvPNSUniversal protocol converter with integrated PROFINET-IO, slave interface
Details...
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