Matrix Orbital LK162-12 Legacy - Manual (Page 7)

LK162-12 rev 4 7
1.7 Manual Override
Manual override should only be required in one instance. If for some reason the module is set at a baud rate
which cannot be produced by the host system and all communication to the display is lost, then the user
should follow this simple procedure:
1. Turn off the display
2. Put a jumper on pins 3 and 4 of the keypad connector (R3 and C1).
3. Power up the display. The baud rate is now set to 19,200.
4. Remove the jumper and change the RS-232 port settings to the desired baud rate.
5. Turn off the display.
6. Power up the display.
Refer to the “Set RS-232 Port Speed” command (section 6.1.11) for acceptable baud rates.
Place jumper on the above pins