Scintillation counters are an important part of the muon detection system at CDF II (FNAL, United States). Permanently controlling and maintaining the high performance of these detectors are essential for obtaining high-quality experimental data. The first version of the control system of scintillation counters created in 2001 was completely upgraded by us due to increased requirements for the control systems of subsystems at CDF in connection with the growth of Tevatron luminosity, the introduction of new devices, and the experience of operation. © 2010 Pleiades Publishing, Ltd.