Process Control Corporation has been a leader in plastic auxiliary blending equipment for over 50 years. Their Integration and Communications Specialist Fred Mau presented on SCADA and Industry 4.0 at a seminar. A brief history of Process Control's communications since 2017 includes extensive improvements to Ethernet drivers and addition of new protocols like OPC-UA. Current best practices like using shielded cable and blocking reads ensure stable communications between PCC equipment and controllers from Siemens, Allen-Bradley, and GE.