5-2
Using the Magnetic Card Reader
Command
Description
The reader responds to the read command
with:
#trck#-(data)-'?'-CR-LF-NAK
#trck#
Track indicator. Values are
% / 1 /
(track 1),
;/2/
(track 2), and
+ / 3 /
(track3).
(data)
The data read from the card. This
field can be empty. If an error
occurs, this field contains an E
character and the error message text
(see ”Error Messages”).
2 hex (Ctrl-B)
Requests the print buffer and card reader
statuses. The printer responds with:
ESC-'B' -#pb#-CR-LF-ESC-'M'-#sleep#-CR-LF-
NAK
#pb#
The number of characters currently
in the print buffer, shown as four
hex digits, which are “OR’d” with
30 hex.
#sleep#
Four ASCII hex digits (which are
“OR’d” with 30 hex) representing
the time left before the printer
enters sleep mode.
ESC-'C'
Cancels the reading process.
