Comparison Of RLL, State Diagram, Grafcet And Petri Net For The Realization Of Logic Controller

Zulhairi , Othman (2005) Comparison Of RLL, State Diagram, Grafcet And Petri Net For The Realization Of Logic Controller. Masters thesis, UTHM.

[img] PDF (24 Pages)
Comparison_Of_RLL_State_Diagram_Grafcet_And_Petri_Net_The_Realization_Of_Logic_Controller_Zulhairi_B_Othman.pdf - Submitted Version
Restricted to Registered users only

Download (3MB)


The strengths and weaknesses of popular plc programming tools may be a common knowledge to the experienced but that contention alone lacks depth to the many others. Several studies have presented weighted comparisons but focused on only two approaches at a time. The first part of this paper presents qualitative comparisons among the 4 most popular approaches: relay ladder logic (RLL), state diagram, grafcet and ordinary Petri net. Each approach is weighted by their understandability, efficiency and flexibility. It is the intent of the second part of this study to formulate a mix and match LLD realization method based on the compared model strengths and weaknesses. The proposed model is then compared with the internationally accepted Grafcet approach in light of the same criteria as the first part. An analysis entails on what has been gained and lost in the proposed approach. From these comparisons ultimately, it is hoped that the plc programmer is aware of the strengths and limitations of whichever programming approach chosen.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Programmable controllers, Microcomputers
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Library > Tesis > FKE
Depositing User: Siti Syahirah Ab Rahim
Date Deposited: 08 Jul 2014 02:17
Last Modified: 28 May 2015 04:27
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item