4-4
Section
Types of Commands and Responses
43
1-to-n Procedure
Command Format
@
Unit no
M
D
C/K
1
X
X
X
X
X
X
FCS
∗
Read/Write head word
(fixed to 1)
00 to 07
Header
Processing specification
(C: Collation; K: Calculation)
Check block first address
Specify a hexadecimal value
(03
H
, 04
H
,..., FE
H
, FF
H
, 00
H
) for
the number of overwriting opera-
tions to be added.
00
H
means 256 bytes.
Response Format
End code
00: Normal completion (at the time of calculation processing only)
75: Normal data (at the time of collation processing only)
76: Data abnormal warning (at the time of collation processing only)
@
Unit no
M
D
0
0
FCS
00 to 07
Header
∗
4-4-11 Data Management Command (MDL)
The MDL command checks whether or not the EEPROM of the Data Carrier has
been overwritten 100,000 times. By adding a number of overwriting operations
with this command to the management area specified by the user, whether or not
the EEPROM has been overwritten 100,000 times will be known. Refer to 5-4-2
EEPROM-type Data Carrier for details.
1-to-1 Procedure
Command Format
M
D
L
1
X
X
X
X
X
X
CR
Header
Read/Write head word
(fixed to 1)
First address specification
(
0
H
to
5
H
or
8
H
to
D
H
)
Specify a hexadecimal value (00
H
, 01
H
, 02
H
,..., FF
H
)
for the number of overwriting operations to be added.
∗
Response Format
M
D
7
5
CR
∗
End code
75: The number of overwriting operations has not exceeded 100,000.
76: The number of overwriting operations has exceeded 100,000.
Header
