Are industrial-grade switches gateways
An industrial gateway is a hardware device designed with the ruggedness needed to withstand industrial environments. Westermo provide a wide range of industrial routers for use in demanding applications such as railways, water treatment, substation automation, roads and tunnels. Offering remote access solutions using wireless cellular 2G/3G/4G LTE/5G or DSL broadband technologies and industrial-grade layer 3. This article teaches the basics of gateways in industrial networks and PLC-to-PLC communication.
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