Datalogic Gryphon BT4100, Product Reference Manual

Page: 326 / 370

Message Formatting
324 Gryphon™ I GD4100/GM4100/GBT4100/L GD4300
• If you want to control the Scanner's beeper from the host, you will also probably want to
disable the good transmission beep that is emitted when the code is received from the cra-
dle. (See
Wireless Beeper Features on page 259 ).
The message field can store plain text and escape sequences.
• Escape sequences are interpreted as commands.
• Plain text is directly printed on the display. If writing beyond the end of line, the display
does not wrap automatically. Extra characters are ignored. Control characters are not
interpreted (i.e. LF, FF, etc.).
Cursor Control
ESC [
n
A
Up
n
rows, no scroll
ESC [ n B
Down n rows, no scroll
ESC [ n C
Right n columns
ESC [
n
D
Left n columns
ESC [ G
CR
ESC [
r
;
c
H
Move to row
r
, column
c
(ESC[1;1H is the upper left
character position of the display)
ESC D
Down 1 row, with scroll
ESC E
CR and cursor down 1 row with scroll
ESC M
Up 1 row and scroll
NOTES:
• Since CR is used as the message terminator, you must use ESC [ G or ESC E to print a
CR.
• The cursor row position is not affected by the currently selected font. The display always
has 4 rows, so when writing with the large font, actually two rows are written to: the cur-
rent one and the one below it. You will need
two ESC E commands to step from one row
to the next when using the large font.
• The cursor column position is affected by the currently selected font. Therefore, column
6 is 36 pixels from the left border only if you last selected the 6x8 font; otherwise it could
be 48 or 72 pixels from the left border.
Font Selection
ESC [ 0 m
Normal mode
ESC [ 7 m
Reverse mode
ESC # 4
Large font: subsequent characters are written on the
current row and the row below it using the 12x16 font
which allows for two rows of eight characters on the dis-
play.
ESC # 5
Normal font: subsequent characters are written using
the 6x8 font, which allows for four rows of sixteen char-
acters on the display.
ESC # 7
Medium font: subsequent characters are written using
the 8x8 font, which allows for 4 rows of 12 characters on
the display.