Allen-Bradley Series B

Chapter 5
Programming Via Escape Sequences
5–19
Code ID characters are single ASCII characters that can be added to the
beginning of decoded bar code data. These characters indicate the
symbology used to encode the data.
All decoded bar code messages may have a single character which identifies
the code symbology added to the beginning of each message. This character
is configurable, and may be any single ASCII character. This code ID
character may be suppressed or transmitted with the bar code message.
The default ID Characters are shown in the table below.
Code Default ID Character
Code 39
Interleaved 2 of 5
UPC/EAN
Codabar
Code 128
Code 11
a
b
c
d
e
f
Code ID Character Assignment Syntax
Esc – y <n> I <ID character>
n
Symbology
1
2
3
4
5
6
Code 39
Interleaved 2 of 5
UPC/EAN
Codabar
Code 128
Code 11
Values of n: 0 . . . 6
<n> is the symbology
<ID character>may be any character from the 128 character ASCII character
set. The new code ID character will not be transmitted until code ID
transmission is enabled.
Note: This escape sequence cannot be concatenated.
Code ID Character Assignment Example
If you wish to have the letter ”s” to be the code ID character for Code 128,
send the following escape sequence to the decoder.
Esc – y 5 I s
Code ID Character Assignment
Esc – y <n> / <one character>