3.
System Configuration Unit and Module
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3.
System Configuration Unit and Module
The intelligent PI/O system includes communication section components, terminal block units,
PI/O modules, option boards and PI/O accessories.
In this chapter, first we give an outline of the intelligent PI/O system, then explain the component
units in detail. We also explain the PI/O accessories and the spare parts.
Communication Section Components
Each intelligent PI/O system is built on a single communications unit component made up of a
communications base unit, communications module, serial bus cable, and an I/O bus cable.
Figure 3.1 shows the communications unit component.
Figure 3.1 A communication section component
1) Communication base unit (USCB1)
This is a base on which the serial bus cable, system power supply (24 Vdc) and I/O bus
cable are connected and the communication module is mounted; and in turn is mounted on
the DIN rail.
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