Matrix Orbital GLC24064 - Manual (Page 14)

2.5 Manual Override
The Manual Override is provided to allow the GLC24064 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 Jumper on the Manual Override pins.
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
Table 1: Default Values
Contrast 128
Backlight 255
Baud Rate 19.2 kbps
I 2 C Slave Address 0x50
Data Lock False
RS232AutoTransmitData True
NOTE The display module will revert back to the old settings once turned off, unless the
settings are saved.
2.6 File System Lock Jumper
The File System Lock Jumper allows you to lock the file system on the GLC24064 so that no fonts or
bitmaps can be either written or deleted from the on board memory. This feature is useful in order to protect
data integrity of production units, if protection of other settings is required see Chapter 12 Data Security.
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