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Data Communication Based on MQTT in a Polymer Extrusion Process

Data Communication Based on MQTT in a Polymer Extrusion Process

Published on: July 15, 2022

On an LAS-integrated soft PLC system based on WorldFIP fieldbus.

Geng Liang¹, Zhijun Li, Wen Li

¹School of Control and Computer Engineering, North China Electric Power University, Changping District, Beijing, 102206, China. liangeng1976@163.com

ISA Transactions

|September 6, 2011

Summary

This study introduces a soft PLC system using WorldFIP fieldbus to improve communication efficiency and real-time performance in large-scale discrete control systems. The new system demonstrates practical applicability for industrial automation.

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Area of Science:

Industrial Automation and Control Systems
Fieldbus Communication Technologies
Embedded Systems Engineering

Background:

Traditional WorldFIP field intelligent nodes exhibit limitations in communication efficiency and real-time performance for large-scale discrete control.
Existing systems struggle to meet the demands of complex industrial environments requiring high responsiveness.

Purpose of the Study:

To design and implement a novel soft PLC system integrated with WorldFIP fieldbus.
To enhance communication efficiency and real-time control capabilities in industrial automation.
To evaluate the system's performance under various network conditions and workloads.

Main Methods:

Integration of Link Activity Scheduler (LAS) into a soft PLC system.
Utilization of field intelligent I/O modules as networked basic nodes.
Development of configuration, supervisory, and embedded running subsystems.
Experimental evaluation focusing on network data transmission delay and CPU workload impacts.

Main Results:

The proposed soft PLC system effectively implements discrete control logic.
Experimental results show the system's practical applicability in both discrete and process control scenarios.
Performance is evaluated considering network latency and processing load.

Conclusions:

The developed soft PLC system offers a viable solution to overcome the limitations of traditional WorldFIP nodes.
The system provides improved communication efficiency and real-time performance for large-scale industrial control.
The approach is deemed practically applicable for enhancing industrial automation systems.