Quantum 140 series: CPU processors module,Communication module, Analog input output.module, Digital input output module.
Invensys Foxboro:I/A Series system,FBM(input / output modules) sequential control,Ladder logic control, Accident recall processing,Digital-to-analog conversion,Input / output signal processing,Data communication and processing
Invensys Triconex:Redundant fault-tolerant control System, the most modern fault-tolerant controller based on triple-module redundancy (TMR) architecture