STMicroelectronics STEVAL-PLC001V1 Industrial PLC Evaluation Board targets compact programmable logic controller (PLC) applications. The board features a powerful human-machine interface (HMI). A 3.5″ TFT touchscreen is mounted on the PCB, which eases interaction with the tool. The board implements a galvanically isolated PLC control unit with robust digital input, digital output modules, expansion connectivity options, and interfaces.