Recent developments and future trends in PLC programming languages and programming tools for real-time control

Author

Peshek, Clifford J. ; Mellish, Michael T.

fYear

1993

fDate

23-27 May 1993

Firstpage

219

Lastpage

230

Abstract

The programmable logic controller (PLC) is changing to reflect the demands of sequencing and continuous processing applications. The PLC can be thought of as a hardened computer with high speed I/O and communications ports with bus interfacing for multiprocessor or coprocessor enhancements, and a BIOS that supports those features. PLC manufacturers now retain control over both aspects of the PLC which interoperate in a proprietary manner. Via the delineation of the two may come a standard real time operating system or real time kernel which would give rise to true applications portability. Specific topics addressed include relay ladder logic, a structured approach to error dynamic diagnostic information (EDDI), state control language, and process control function blocks

Keywords

industrial computer control; multiprocessing systems; programmable controllers; programming languages; real-time systems; relay control; BIOS; PLC; bus interfacing; continuous processing applications; coprocessor; developments; error dynamic diagnostic information; industrial automation; kernel; multiprocessor; operating system; process control function blocks; programming languages; programming tools; real-time control; relay ladder logic; sequencing; state control language; Application software; Communication system control; Computer interfaces; Computer languages; Coprocessors; Manufacturing; Operating systems; Process control; Programmable control; Real time systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Cement Industry Technical Conference, 1993. Record of Conference Papers., 35th IEEE

Conference_Location

Toronto, Ont.

ISSN

1079-9931

Print_ISBN

0-7803-0960-X

Type

conf

DOI

10.1109/CITCON.1993.296983

Filename

296983