Evaluation of timing characteristics of a prototype system based on PROFINET IO RT_Class 3

Author

Ferrari, Paolo ; Flammini, Alessandra ; Marioli, Daniele ; Taroni, Andrea ; Venturini, Francesco

Author_Institution

Univ. of Brescia, Brescia

fYear

2007

fDate

25-28 Sept. 2007

Firstpage

1254

Lastpage

1261

Abstract

The PROFINET architecture can provide real-time, high-performance, isochronous communication regardless the presence of other real-time data exchange and TCP/IP traffic for a considerable portion of network bandwidth. In this work some experimental tests have been executed in order to evaluate timing performance of a PROFINET ASIC (ERTEC 400 chip) and its related development kits. Results shows that communication isochrony has been ensured with a jitter of about 100 ns despite TCP traffic (70% of bandwidth) and presence of PROFINET IO RTjClass 1 nodes. On the contrary, some improvements are still needed as regard features of the software stack and of the interface with the application layerl. The highlighted problems will be probably fixed in the next firmware releases planned by manufacturer.

Keywords

IP networks; application specific integrated circuits; field buses; firmware; local area networks; microprocessor chips; real-time systems; synchronisation; telecommunication traffic; transport protocols; ERTEC 400 chip; PROFINET ASIC architecture; TCP/IP traffic; firmware release; real-time Ethernet protocol; real-time data exchange; software stack; timing performance evaluation; Application software; Application specific integrated circuits; Bandwidth; Jitter; Microprogramming; Prototypes; TCPIP; Telecommunication traffic; Testing; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Emerging Technologies and Factory Automation, 2007. ETFA. IEEE Conference on

Conference_Location

Patras

Print_ISBN

978-1-4244-0825-2

Electronic_ISBN

978-1-4244-0826-9

Type

conf

DOI

10.1109/EFTA.2007.4416925

Filename

4416925