
Figure 16: Keypad Interface Connector
2.5 Manual Override
Manual Override is provided to allow the GLK240128-25 to be reset to factory defaults. This can be
particularly helpful if the display module has been set to an unknown baud rate or I
2
C Slave Address and
you are no longer able to communicate with it. If you wish to return the module to its default settings you
must:
1. Power off the display module.
2. Place a jump between Row 5 and Column 1.
3. Power up the display module.
4. The display module is now set to its default values listed below in table 1.
5. Edit and save settings.
Figure 17: Manual Override Jumper
Matrix Orbital GLK240128-25 10
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