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S7 I/O Device

The S7 I/O™ device is an addressable modular input/output (I/O)

device that links power system components to the ACCESS

system. This device is a programmable logic controller (PLC),

customized to communicate using SEABus.

PLCs consist of input modules or points, a central processing

unit (CPU), and output modules or points. An input to a PLC

may come from a variety of digital or analog signals from

various field devices. The PLC converts the input signal into a

logic signal that can be used by the CPU. Output modules

convert control signals from the CPU into a digital or analog

signal that can be used to control various field devices.

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Siemens DTU3005-B Spezifikationen Seite 74