Compuprint MDP40B Programmer Manual - Manual (Page 127)

B-20
DC4 DC4 ESC ! n 19 p EM 2 of 5 Matrix
The 2/5 MATRIX bar code. Data format length is variable and the supported
character set only provides ASCII numeric figures 0 to 9. N indicates the bar
code height in units of 1/6 inch and must be in the range 1 to 12. The
parameter p must be NUL (hex. 00) if no Human Readable Characters are to
be printed, and 1 (hex. 01) if they are to be printed.
DC4 DC4 ESC ! n 20 p EM Code 39
The CODE 39 bar code. Data format length is variable and must always
start and end with an asterisk. It can contain the alphanumeric character
listed below:
0 1 2 3 4 5 6 7 8 9
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z -. SPACE $ /
+ % * ( as start / stop character)
The parameter indicates the bar code height in units of 1/6 inch and must be
in the range 1 to 12. The p parameter must be NUL (hex. 00) if no Human
Readable Characters are to be printed, and 1 (hex. 01) if they are to be
printed.