Hands-On Industrial Internet of Things

PLC

PLCs receive data from sensors and send commands to actuators. In a large plant, it is likely that there will be several PLCs of different sizes with different capabilities. These are often structured hierarchically, with the highest acting as data concentrators. There aren't many PLCs that act as concentrators in a factory; you can often find them controlling an entire line of production or a specific functional area of the industrial plant. The PLC concentrators meet the needs of the I-IoT data flow very well. They are very powerful and are usually linked to an OPC server gateway provided by the same vendor as the plant or the corporate network, thereby simplifying the task of transferring the data to the cloud over the internet. Sometimes, ...