3-2SectionData Carrier Memory Map
26
If
the EEPROM is overwritten 100,000 times or more, the data in the
manage
-
ment
area will not be revised and only a warning will be returned as a response. If
the
number of overwriting operations is set as 00, the number will not be revised
and only the number of overwriting operations can be checked.
Upper
digit
Middle digit
Lower digit
Start address of area
Upper digit
3 bytes
Note The first address must be jjj0 to jjj5 or jjj8 to jjjD. If the first
address
is
jjj
6 to
jjj
7 or
jjj
E to
jjjF
, the address error code,
7A
(HEX) will be returned as an end code.
MDL Command Examples The
following are MDL command usage examples with the condition that three
bytes beginning with 0010H are used as the management area.
1, 2, 3...
1. The management area is cleared.
0010
0011
0012
0
0 H
0 0 H
0 0 H
“WTH10010000000”
2. Input 4 as the number of overwriting operations.
0010
0011
0012
0
0 H
0 0 H
0 4 H
“MDL1001004”
3. Input 5 as the number of overwriting operations.
0010
0011
0012
0
0 H
0 0 H
0 9 H
“MDL1001005”
is
added to
be 9 times.
4. The EEPROM has been overwritten 100,000 times.
0010
0011
0012
0
1 H
8 6 H
A 0 H
When MDL1001000 is executed, MD76
(excessive
overwriting operations) results.