by James Powell | May 27, 2024 | How things work
Introduction Modbus RTU and TCP are, when compared to PROFINET, PROFIBUS and EtherNet/IP, slow protocols. Therefore, it is not suited for ‘real-time’ control in most cases. However, if the process is also very slow, then Modbus can be fast enough. If things change in...
by James Powell | May 6, 2024 | General
Introduction: Welcome to the first of four postings in May about Modbus. Yes, it will be marvelous. This one will be about why we still use Modbus. The next three will focus on three key applications of Modbus in industrial automation: Monitoring, Datalogging, and...
by James Powell | May 24, 2023 | General
Modbus is the Grand-daddy of industrial protocols. It has been around since the mid-70s. One would think it had gone the way of the Eight-track tape by now. I have heard, ‘Oh Modbus, it is dead – isn’t it?’ Well, No, it is not. As I have...
