100
Section 4Data Carrier
RFID System
User's Manual
Section 4
Functions
Data Carrier
The memory access space available to the Hand-held Reader Writer is 0000H to 1FFFH, totaling 8 Kbytes.
The available access space is determined by the Data Carrier memory capacity. The allocations for the Hand-
held Reader Writer's manufacturing date area, write-protect area, and control methods for these areas
depend on the type of Data Carrier memory used (SRAM or EEPROM).
For details on the Data Carrier, refer to the Appendices or the Read/Write Head and Data Carrier Manuals (Cat. No. Z127-E1,
Z128-E1).
p.115
Manufacturing Date Format (Default Setting)
•Using SRAM (Built-in Battery) Data Carrier
The date of manufacture is registered in the first 2 bytes of the memory area, which control the Data
Carrier battery life. This area can be read, but cannot be written to by the user. If a writing operation
mistakenly occurs, an error (error code: 7D) will result.
Manufacturing Date Area
Note 1. The year of manufacture is represented by the last two digits of the year (for example, “92” for
1992).
2. The month of manufacture is represented by two digits (for example, “03” for March and “10”
for October).
3. Years from 2000 onwards are represented beginning with 00 (for example, “0400” for April
2000 and “1204” for December 2004).
Example: Manufacturing Date of September 1992
•Using EEPROM (Without Battery) Data Carrier
There is no manufacturing date area. The start address is a write-protected area.
Address Bit76543210
0000
Second digit of
month
First digit of
month
0001
Second digit of
year
First digit of
year
Address Bit76543210
0000
00001001
09
0001
10010010
92
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