PT ISIM is primarily designed for telecommunications networks based on Ethernet. Cases when the whole infrastructure of a plant, even the operator layer, are based on RS-485 are extremely rare. Today RS-485 networks have some significant limitations on the network bandwidth and size. Using only RS-485 is not a protection against basic vulnerabilities of protocols in use. The number of such networks is constantly decreasing in favor of industrial Ethernet.
PT ISIM is primarily designed for telecommunications networks based on Ethernet. Cases when the whole infrastructure of a plant, even the operator layer, are based on RS-485 are extremely rare. Today RS-485 networks have some significant limitations on the network bandwidth and size. Using only RS-485 is not a protection against basic vulnerabilities of protocols in use. The number of such networks is constantly decreasing in favor of industrial Ethernet.