Communications
MS-860 Industrial Raster Reader User’s Manual
6-19
Preamble
Preamble Status
Preamble Character(s)
Usage:
Used for identifying and controlling incoming data. For example, defining
the
preamble as a carriage return and a line feed causes each decoded
message to be displayed on its own line.
Definition:
Defines a one to four character data string that can be added to the front
of the decoded data.
Serial Cmd:
<
K141,status
,preamble character(s)>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled (within any protocol)
Serial Cmd:
<
K141,
status,
preamble character(s)
>
Default:
CR
(^M) corresponds to:
carriage return/null/null/null
.
Options:
Up to four user-defined ASCII characters, including control characters.
Within a Serial Command
To enter control characters within a serial command, hold down the con-
trol key while typing the desired character.
Example:
<K141,1,CTRL-m>
to enter
^M
Within an Embedded Menu
Control characters entered on the command line are displayed in the
menu as mnemonic characters, such as:
<CR><NUL><NUL><NUL>
.
To enter a control character from within an embedded menu, first type in
a space (with the space key). This has the effect of allowing the control
key to be recognized as a part of the control character. Next hold down
the control key while typing the desired character.
Example:
Space CTRL-m
to enter
^M.
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