Translation:
With the advent of Industry 4.0, there is an increasing demand for intelligence, automation and digitization in manufacturing. In this context, the Modbus protocol faces some challenges.
Firstly, the Modbus protocol has significant security issues. Due to its simple communication method, it is vulnerable to security problems such as hacking attacks and data tampering.
Secondly, in terms of real-time performance and bandwidth utilization, compared with modern industrial communication standards, Modbus protocol is not as excellent. Especially in the case of large-scale device networking, traditional serial communication methods are no longer sufficient to meet requirements.
In addition, in terms of multi-level architecture and cloud platform applications, the Modbus protocol also has certain limitations. It can only perform point-to-point communication and does not support distributed systems and cloud computing platforms very well.
MQTT protocol is a lightweight message transmission protocol based on publish/subscribe model that is built on TCP/IP protocol. It was released by IBM in 1999 and became an officially approved communication standard by OASIS on October 29th, 2014. Currently it has been widely applied in areas such as Internet of Things (IoT), mobile internet, smart hardware, connected cars, smart cities, remote healthcare services, power industry, oil and energy.
Compared with Modbus Protocol MQTT’s advantages are obvious mainly due to its light weight nature ,flexibility,reliability,and security which can be seen from the table below.
