★Invensys Foxboro:I/A Series system，F(xiàn)BM(input / output modules) Sequence control, ladder logic control , Recalling accident treatment, The digital-to-analog converter input / output signal processing, Data communication and processing and so on. ★Invensys Triconex: Redundancy fault tolerant control system, Based on the three module redundancy (TMR) structure of the most modern fault-tolerant controller. ★Westinghouse:OVATIONN system、WDPF system、WESStation system card. ★Schneider Modicon:Quantum 140 Series processor, control card, Power module and so on. ★Rockwell Allen-Bradley:Reli