Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 132)

9–10 Configuration: AUX and LCD Display Parameters
Publication 2755-833
The main logic board of the decoder has a potentiometer for
adjusting the contrast of the LCD Display. Figure 9.1 shows the
general location of the potentiometer on the main logic board.
Figure 9.1 Potentiometer for LCD display contrast
Main Logic Board
Enclosure
LCD DISPLAY
CONTRAST
ADJUST
Potentiometer for LCD Display Contrast
AUX TERMINAL
DATA CONFIG.
ENTRY
Mounting bracket for optional battery
∨ ∨
To adjust the contrast of the LCD Display:
1. Power on decoder, but if possible disconnect power from module
connectors.
2. Loosen the two screws which secure the cover of the decoder and
open.
3. Using your fingers, turn the LCD Display potentiometer to the
left or right until the desired contrast or readability is achieved.
4. Close cover of decoder and tighten screws.
AUX Terminal Display Examples
The section provides examples to illustrate how data is displayed at
the AUX terminal and how the configuration parameters control the
format of the displayed data.
Example 1
In Example 1, the AUX terminal is configured to display
unformatted bar code data in position 21.
Adjusting Contrast of
LCD Display