Track1
Track 2
Track 3
%/1/ Data
;/2/ Data
?CRLF
+/3/
Data
?CRLF
ISO 7811 ASCII Format
Magnetic Card Read Error Messages
The characters <%> and <E> preface all error messages. Following these two characters is
a comma, the error number in ASCII (01 through 99), another comma, English description
of the error encountered and finally CR-LF terminating the <Error Message> string. The
syntax is as follows:
Error Message ( General Form)
nn , Error text in ASCII, <CR> <LF>
Error Message – General Form
Where
nn
is error number encountered.
The printer may transmit Four (4) types of Read Error messages. The following messages
terminated with
CR-LF are returned by the firmware:
Error #
Error Message Transmitted
05 Time-out
Expired
07
Invalid Track Number
08
Unsupported Track Selected
09 Cancel
Request
Error Message – Specific Examples
Note:
The Invalid Track number message is not implemented on version 0.09.
Future releases will implement this message the timeout message also needs to
be modified to work all the time since right now it works only in case this is the
first command send on power up.
