Datalogic Dragon, Reference Manual, Page: 174 / 203

DRAGON™
162
6
•
If you have
not
enabled the Gun Address Stamping or the Gun Address
Delimiter, you
must not
specify them. In this case all messages will be implicitly
addressed to the 'binded' gun of the cradle directly connected to the serial line.
•
The gun can only receive messages only if two-way mode is enabled. (See par.
5.8.3, “Transmission Mode”, command is on page 130).
•
Messages cannot start with '$+' because they would be interpreted as a
configuration command.
•
You can send a message to the gun only while it is on. This happens when it has
sent a message to the host and the radio timeout has not yet expired. (See par.
5.8.1, "Radio Protocol Timeout"; command is on page 129).
•
If you want to control the gun'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 cradle. (See command on page 83).
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.).
6.1.1 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