VI Control Systems, Ltd. offers years of experience in software and hardware development of controls for complex systems such as linear accelerators and pulsed-power systems, data acquisition in difficult environments, and sophisticated data analysis. VI Control Systems is a distributor for Group 3 ControlNet, a fiber-optically linked control system using distributed I/O modules: analog I/O, digital I/O, DC motor control, stepper motor control, serial and GPIB. VI Control Systems wrote the LabVIEW driver level software for, and had extensive application experience with, all currently available Group 3 ControlNet I/O boards.