Optimization of acyclic bandwidth allocation exploiting the priority mechanism in the FieldBus data link layer

Author

Cavalieri, Salvatore ; Stefano, Antonella Di ; Mirabella, Orazio

Author_Institution

Istituto di Inf. e Telecomunicazioni, Catania Univ., Italy

Volume

40

Issue

3

fYear

1993

fDate

6/1/1993 12:00:00 AM

Firstpage

297

Lastpage

306

Abstract

In process control applications, the bandwidth assigned to acyclic traffic is oversized in order to ensure that the time constraints of control traffic are met. In the FieldBus, a protocol designed to support the exchange of information between sensors/actuators and regulating elements in an automation environment, this means allocating an excessive portion of the macrocycle to acyclic traffic. The use of traffic management based on priority can allow more efficient management of the available bandwidth. The authors analyze the priority mechanism provided for in the FieldBus data link layer and assess various strategies for management of aperiodic traffic and different application scenarios

Keywords

frequency allocation; optimal control; process computer control; protocols; system buses; telecommunication traffic; FieldBus data link layer; actuators; acyclic bandwidth allocation; aperiodic traffic; application scenarios; automation environment; digital control; macrocycle; optimal control; priority mechanism; process control; protocol; sensors; traffic management; Access protocols; Actuators; Automatic control; Bandwidth; Channel allocation; Communication system control; Communication system traffic control; Field buses; Process control; Time factors;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.232209

Filename

232209