Computer aided design of relay ladder diagram from functional specifications

Author

Devanathan, R.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore

fYear

1990

Firstpage

527

Abstract

The author describes two complementary software programs, called PROLOC and AILISTD, which make up a high-level computer-aided design package that transforms functional specifications into relay ladder design for direct implementation in a programmable logic controller (PLC). AILISTD uses artificial-intelligence techniques to transform the functional specifications into a state transition diagram (STD) representation. PROLOC then translates the STD specifications into relay ladder design for programming into a PLC. A laboratory example involving a liquid level control system illustrates the use of both programs

Keywords

automatic programming; control system CAD; knowledge based systems; programmable controllers; software packages; AILISTD; PLC; PROLOC; artificial-intelligence techniques; functional specifications; high-level computer-aided design package; liquid level control system; programmable logic controller; relay ladder diagram; state transition diagram; Logic design; Logic programming; Packaging; Programmable control; Programmable logic arrays; Programmable logic devices; Relays; Sequential circuits; Software packages; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, 1990. IECON '90., 16th Annual Conference of IEEE

Conference_Location

Pacific Grove, CA

Print_ISBN

0-87942-600-4

Type

conf

DOI

10.1109/IECON.1990.149196

Filename

149196