6.3. Reset Message
A reset of the reader occurs automatically whenever the reader is being powered up. A reset can also
be actuated through the RS-232/USB interface.
In either case the reader transmits
one time
a Reset Message, which has the same structure as the
normal response to a command and the following contents:
byte 1 2 3 4
5
6
Header
SW1
SW2
Data length
Data
Checksum
01
H
FF
H
00
H
01
H
BAUD=12
H
BAUD
Indicates the hardware baud rate setting (default baud rate), which is set to 9600 bps
(this is only valid in the RS232 reader).
The reader does not expect an acknowledge signal from the computer. After transmitting the Reset
Message the reader is waiting for the first command from the computer.
6.4. Card Status Message
When a card is being inserted into the reader or an inserted card is being removed from the reader
while the reader is idle, i.e., not executing a command, the reader transmits a Card Status Message to
notify the host computer of the change in the card insertion status.
In a system where these unsolicited messages from the reader to the computer are not desired, they
can be disabled with the
SET_NOTIFICATION
command. Please note that the setting made with this
command is volatile and will be lost with the next reader reset or power up. By default, the Card
Status Message will be transmitted by the reader after a reset.
The Card Status Messages have the following structure and contents:
Card Status Message for Card Insertion
byte
1 2 3 4 5
Header
SW1
SW2
Data length
Checksum
01
H
FF
H
01
H
00
H
FF
H
Card Status Message for Card Removal
byte
1 2 3 4 5
Header
SW1
SW2
Data length
Checksum
01
H
FF
H
02
H
00
H
FC
H
A card status message is transmitted only
once
for every card insertion or removal event. The reader
does not expect an acknowledge signal from the computer. After transmitting a status message, the
reader waits for the next command from the computer.
NOTE:
If the card is being removed from the reader
while a card command is being executed
, the
reader will transmit a normal response to the computer with the response status bytes indicating the
card removal during command execution (see
Appendix B: Response Status Codes
).
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AET60 Reference Manual
Version 1.7
Page 13 of 24
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