32
TTPM2 Installation and Programming Manual
September, 99
bar code data This is a block of data to be converted by the TTPM2 and printed in bar
code form in accordance with the parameters identified. For available
characters and data string formats, please refer to the specific type of bar
code.
The following command string produces the ticket illustrated below:
!.#.)$.)"+#.+$
Figure 20. EAN13 bar code
5.3.5 Canceling
a
ticket
!F M
Format print on cancelled ticket
The TTPM2 can cancel a ticket after an unsuccessful magnetic encoding. The feature
relates to the read-after-write function
1
. When the <message> has been encoded, the
TTPM2 reads and compares the magnetically encoded message with the original <mes-
sage> string. If the comparison is negative, a second attempt to encode/read the same
ticket is done. If also this attempt is negative, the ticket is cancelled. The magnetic stripe
is erased and stripes are printed across the ticket (see figure below).
1
The read after write feature can be disabled by inserting an asterisk (*) in the data string to be encoded, see page 35.
