ACS AET65 Smart Card Reader with Fingerprint Sensor - Manual (Page 13)

9.0. AET65 Commands
The commands executed by the AET65 can generally be divided into two categories, namely, Control
Commands and Card Commands.
Control Commands are in charge of the internal operation of the AET65. They do not directly affect
the card inserted in the reader and are therefore independent of the selected card type.
Card Commands are directed toward the card inserted in the AET65. The structure of these
commands and the data transmitted in the commands and responses depend on the selected card
type.
9.1. Control Commands
9.1.1. GET_ACR_STAT
This command returns relevant information about the particular AET65 model and the current
operating status such as the firmware revision number, the maximum data length of a command and
response, the supported card types, and whether a card is inserted and powered up or not.
Command format
Header Instruction Data length
01 H 01 H 00 H 00 H
Response data format
Header Status Data length INTERNAL MAX_
C MAX_
R C_TYP
E C_SE
L C_ST
AT
LEN
01 H
INTERNAL 10 bytes data for internal use only
MAX_C The maximum number of command data bytes.
MAX_R The maximum number of data bytes that can be requested to be transmitted
in a response.
C_TYPE The card types supported by the AET65. This data field is a bitmap with each
bit representing a particular card type. A bit set to '1' means the
corresponding card type is supported by the reader and can be selected with
the SELECT_CARD_TYPE command. The bit assignment is as follows:
Byte 1 2
card type 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
See Appendix B.1 for the correspondence between these bits and the
respective card types.
C_SEL The currently selected card type as specified in a previous
SELECT_CARD_TYPE
command. A value of 00H means that no card type has
been selected.
C_STAT Indicates whether a card is physically inserted in the reader and whether the
card is powered up:
00H : no card inserted
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AET65 Reference Manual
Version 1.00
Page 13 of 19
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