PLC’s are industrial computer systems that monitor the state of input devices and makes decisions based upon a custom program to control the state of output devices
DCS (Distributed Control System) is a computerised control system that can control a larger number of machines or processes.
Popular ranges of HMIs include Mitsubishi FX-Series, Allen Bradley PLC5 & SLC500, , Siemens s5 & S7, Omron CQM1
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