Koyo has been making PLCs for many years. They started marketing in the USA in 1982 with the GE Series One, then TI took over and marketed the same basic PLC as the TI 305 series and started the TI 405 line, Siemens took over the two lines for a few years, then a small upstart company called PLCDirect took over the 305 and 405 lines, launched the 205 line and branded the Koyo PLCs as DirectLogic.