RS-232C method is based on 1:1 communication, which is generally applied to the point-to-point communication within 15 meters due to the existence of common-ground noise and the unavoidable common-mode interference etc. RS-232C is a kind of serial physical interface standard formulated by Electric Industry Association (EIA). This article explains the different options that are available and how connection with CP1L and CJ is setup (separate articles) using Host Link and Ethernet. The NB HMI series has the possibility to connect with Omron PLCs and devices through Ethernet, and Serial interfaces, particularly the Omron CP1L compact PLC’s and the CJ1/CJ2 modular PLC’s, as well as automation components from other vendors.
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