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Controller components
Display module
The display module (Figure 7) is a housing that contains a printed circuit board, liquid crystal display (LCD) touch screen, and an alarm LED. The printed circuit board supports the LCD touch screen and the alarm LED. The touch screen provides the operator access to the user interface program.
The display module can be “hot swapped:” it can be removed and installed without removing power from the main module. When the display module is installed onto a powered main module, it receives power and begins to operate automatically.
Figure 7. Display module
Alarm LED
LCD touch screen
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