Programmable Logic Controller Virtualization

This article examines the concept of “full” PLC virtualization—virtualizing CPU, backplane, I/O cards and networks—to run vendor-specific controller stacks on commodity IT/OT hardware. It outlines expected benefits (reduced cost, greater flexibility, improved support, higher performance, and enhanced cybersecurity like SDN/zero-trust controls), cites existing vendor trends (virtualized DCS/controllers), and highlights key challenges such as determinism, long hardware lifecycles, and the need for vendor adoption.