Understanding the Variety of OPC Products and Integration with Legacy Devices

This chapter explores the reasons behind the multitude of OPC products available, delving into discussions about various OPC products like visual logger for OPC, C++ client SDK, and UA web client. The speakers discuss the integration of legacy devices supporting Modbus with OPC UA, highlighting OPC UA's role in machine-to-machine communication at the shop floor and plant-to-plant level. The comparison between OPC-UA and MQTT protocols in terms of complexity, ease of implementation, and technical specifications is also discussed, with a preference expressed for MQTT due to its simplicity and faster implementation.