What's in your Industrial Control Cabinet?
Mounted in that cabinet's racks are the logic controllers that supervise and time industrial processes. They trigger the movement of mechanical devices like flow regulators, servo motors and heat lamps. That's also where sensor data is received, making all that automated direction and supervision possible.
The Cloud and the Industrial Internet of Things (IIoT) enter this picture when automated activity starts drawing on intelligence beyond the cabinet. That's when data gets extracted and sent upstream in the network for deeper analysis; perhaps long-term, perhaps off-site and perhaps aggregated with data from other such sites.