Supporting internet protocols in master-slave fieldbus networks

• Autor(es): Pacheco, Filipe ; Tovar, Eduardo ; Kalogeras, A. ; Pereira, Nuno
• Data: 2001
• Identificador Persistente: http://hdl.handle.net/10400.22/3495
• Origem: Repositório Científico do Instituto Politécnico do Porto
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

In this paper we describe how to integrate Internet Protocols (IP) into a typical hierarchical master-slave fieldbus network, supporting a logical ring token passing mechanism between master stations. The integration of the TCP/IP protocols in the fieldbus protocol rises a number of issues that must be addressed properly. In this paper we particularly address the issues related to the conveyance of IP fragments in fieldbus frames (fragmentation/de-fragmentation) and on how to support the symmetry inherent to the TCP/IP protocols in fieldbus slaves, which lack communication initiative.