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Control and monitoring device for an automation system or similar, comprises peripherals linked to a central control unit that has two transmission controllers for controlling communications and setting up a security circuit
Control and monitoring device for an automation system or similar, comprises peripherals linked to a central control unit that has two transmission controllers for controlling communications and setting up a security circuit
Device comprises a plurality of peripherals (Pa, Pb, Pc, Pn), a central control unit (4) and a communications network (5) connecting them together. The central control unit has one or two transmission controllers (41, 42) connected to the various peripherals through a transmission channel (50), each transmission controller comparing context codes (Ka, Kb, Kc, Kn) received from the peripherals with stored reference codes (Ra, Rb, Rc, Rn) to set a security circuit (6) in a security or fault configuration, dependent on whether the compared codes show identical one-to-one correspondence.
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