Matrix Orbital LCD/VFD Legacy - Manual (Page 6)

Table 1: Common ASCII Control Characters
Character Hex Value Function
CR 0x0D Moves cursor to the beginning of the
current line
LF 0x0A Moves cursor to the beginning of the
next (or previous) line
FF 0x0C Clears the display and puts the cur-
sor at the top left
BS 0x08 Moves cursor one position to the left
and clears that position
NOTE These command characters are not guaranteed to work on other Matrix Orbital
display modules.
To exercise some of the other features of the display, a program (in any convenient language such as Basic
or C) will need to be written in order to issue the required command strings. Most terminal programs are
unable to issue the 0xFE character needed as a command prefix.
1.5 Manual Over-ride
Manual over-ride 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 for acceptable baud rates.
Figure 2: Manual Over-ride
Matrix Orbital LCD4041 3