Filter
Top Products
SurePOS 100 Technical Reference
Page 81 of 104
Any data received after the 45th are ignored except a carriage return (0Dh). The message will be
displayed after the carriage return command is received. If the cursor position is on the top line when
this command is received, it is moved to the first position on the bottom line. If the cursor position is on
the bottom line, the cursor position is not changed. Any text on the bottom line is left unchanged when
this command is issued. Data will continue scrolling on the top line until a valid character, Backspace,
Horizontal Tab, Line Feed, Carriage Return, or Display Position command is written to the top line.
Test amd Reset will stop the scrolling message regardless of the display position.
BACKSPACE (08h, <BS>): Decrements the cursor position by one, and clears any character
displayed in that position. If the write position is at the lower left position, the position is moved to the
upper right, and if the write position is at the upper left, the write position is moved to the lower right.
This command will stop the scrolling alphanumeric message if the cursor position is on the top line
when this command is sent.
HORIZONTAL TAB (09h, <HT>): Increments the cursor position by one . No character erasure takes
place. This command will stop the scrolling alphanumeric message if the cursor position is on the top
line when this command is sent. At the end of a line, the display behavior is determined by the state of
the DC1/DC2 mode as follows:
Normal Display Control (DC1)Mode: If the cursor is at the upper right position, it is moved to the lower
left position. If the cursor is at the lower right position, it is moved to the upper left position.
Vertical Scroll Display Control (DC2) Mode: If the cursor position is at the upper right position, it is
moved to the lower left. If the cursor is at the lower right position, the characters displayed on the
bottom line are moved to the top line, the bottom line is cleared, and the cursor is moved to the lower
left position.
LINE FEED (0Ah, <LF>):
The display behavior is determined by the state of the DC1/DC2 mode as
follows:
Normal Display (DC1)Mode: The cursor is moved to the same position in the complementary line. In
this mode, a line feed command will stop the scrolling alphanumeric message if the cursor position is on
the top line when this command is sent.
Vertical Scroll (DC2) Mode: If the cursor position is on the top line, it is moved to the complementary
position on the bottom line. If the cursor position is on the bottom line, all characters on that line are
moved to the top line, the bottom line is cleared, and the cursor position is unchanged. This command
will always stop the scrolling alphanumeric message.
CARRIAGE RETURN (0Dh, <CR>): Causes the cursor to move to the left most position of the current
line. This command will stop the scrolling alphanumeric message if the cursor position is on the top line
when this command is sent.
TEST (0Fh),<SI>: Causes the first 40 characters in the currently selected character set to be displayed
one time. In addition, at the end of the test, a test pattern is written that turn all pixels ON. At the
conclusion of the test routine, the display is cleared and the display is reset to the "reset" state defined
below.