Matrix Orbital GLC24064 - Manual (Page 36)

Table 14: Example of an ASCII Table
The letter A has a value of 65 decimal or 41 hex
The letter a has a value of 97 decimal or 61 hex
The number 0 has a value of 48 decimal or 30 hex
The number 9 has a value of 57 decimal or 39 hex
This gives rise to the possibility of confusion when parameters are being set on the display. For example,
some commands use a [type] parameter to indicate a file type. We’re told that acceptable values are 0 and
5. All parameters must use numeric values (i.e., the actual byte values). If we send the ASCII number 0 by
mistake it will actually give the value 48 decimal (30 hex) to the parameter, which is wrong. In the tables
given in the following sections ASCII characters are shown as ’A’, with single quotes.
7.4 Text Commands
Syntax in the tables below is given in hex, decimal and decimal with ASCII, in that order, one per line.
Table 15: Text Commands
Command Syntax Default Notes
Auto scroll on FE 51
254 81
254 ’Q’ off Enables scroll at
bottom of screen.
Text will push
display up one
line to make room
for new line.
Auto scroll off FE 52
254 82
254 ’R’ off Disables auto
scroll. Text will
wrap to top left
and
overwrite
existing text.
Set text insertion point FE 47 [col] [row] 254 71
[col] [row]
254 ’G’ [col] [row] n/a Sets text insertion
point using the
base size of the
current font.
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