- Emerson Remote Terminal Unit Instruction Manual

2-38 / Installation & Operation CI-ControlWave Express
Figure 2-28 - LCD Display (Only) Assembly Installation Drawing
2.4.5.2 Operation of the Dual-button Display/Keypad Assembly
The Display will have a timeout of 20 minutes. If there has been no keypad activity for this
time the display will “logout,” i.e., the display will be turned off and scrolling stopped until
a key press occurs. When a key press occurs after a timeout the display will return to the
opening screen.
If a shorter timeout of the display is needed for power savings, another timeout may be
implemented. The processor connected to the display will control the timeout. When the
timeout occurs the display will be blanked, but communications between the ControlWave
Express CPU and display processor will still occur. The display processor will ignore
posting the messages to the screen when in the low power mode. When a key is pressed the
display processor will return to displaying information to the display.
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