Citizen Systems Model CMP-10 manual ESC ? n, Hex Track

ESC ? n

[Function]	Reading magnetic stripe reader
[Code]	<1B>H<3F>H<n>
[Range]	{0 =< n =< 7(Hex)}
[Outline]	When the command is received the bicolor LED is shining in RED and the printer is
	waiting for the magnetic card to be swiped through the reader. If even after 10
	seconds the card is not swiped the command is aborted automatically.
	Printer returns the information read from the tracks followed by 00(Hex).
	Reads the data of the track in the following table by the value of n.
	n (Hex)	Track
	0	Invalid
	1	Track 1
	2	Track 2
	3	Track 1 and 2
	4	Track 3
	5	Invalid
	6	Track 2 and 3
	7	Invalid

The format of the data read is as follows.

Track

Header

Card data

Footer

Track	Track 1 is F1 (Hex)
	Track 2 is F2 (Hex)
	Track 3 is F3 (Hex)
Header	Track 1: Ò%Ó
	Track 2: Ò;Ó
	Track 3: Ò+Ó or Ò;Ó
Card data	ASCII data
Footer	Ò?Ó

If reading track is more than one (n=3 or 6), footer data of track 1 or 2 is followed by track data of track 2 or 3.

[Caution]	The command for reading multiple tracks at a time may often result in read error.
	If reading is unsuccessful, repeat it.

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