Siemens DTU3005-B Especificaciones descargar pdf (Pagina 50)

Modem Modems are electronic devices used for sending and receiving

data over long distances. The Siemens ACCESS system also

supports data communication through a modem. In the

following illustration a remote computer communicates to an

isolated multi-drop converter through a modem.

Fiber Optics Fiber optics is a method for transmitting data using light. A basic

system consists of a transmitting device which generates a light

signal, a fiber optic cable, and a receiving device. In the

following illustration a supervisory computer is connected to a

fiber optic converter through an RS-232 interface. At the other

end of the fiber optic cable is another RS-232 to fiber optic

converter which is connected to an isolated multi-drop

converter. The RS-485 output of the multi-drop converter is

connected to various field devices.

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Siemens DTU3005-B Especificaciones Pagina 50