![background image](http://html1.mh-extra.com/html/omron/cj-12-2004/cj-12-2004_manual_740789078.webp)
59
Data Carrier Memory
Section 5-4
5-4
Data Carrier Memory
The memory access area for the ID Sensor Unit is 64 Kbytes from address
0000 (hex) to address FFFF (hex). The area that can actually be accessed is
determined by the memory capacity of the Data Carrier. The manufacturing
date area, write protection setting area and handling methods, and the life
control method depend on the type of memory in the Data Carrier.
5-4-1
EEPROM (Battery-free) Data Carriers
Data Carrier Memory Map
Manufacturing Date
Format
There is no manufacturing date area. The start address is the write protection
setting.
Note
A Data Carrier address error will occur if the Processing Address or Number
of Processing Bytes specified for a Bit Set, Bit Clear, Mask Bit Write, Calcula-
tion Write, or Number of Writes Control command results in communications
across multiple pages. When using these commands, specify the Processing
Address and Number of Processing Bytes so that all processing is performed
on the same page. The address ranges for individual pages are as follows:
0000 to 0007, 0008 to 000F, 0010 to 0017, 0018 to 001F, . . . , 00F0 to 00F7,
and 00F8 to 00FD.
Contents
EEPROM (battery-free)
Data Carrier
SRAM (built-in battery)
Data Carrier
Refer-
ence
Manufacturing
date area
None
Addresses 0000 and
0001 (hex) (2 bytes)
Page 59
Write-protectable
range
Either addresses 01 to 7F
(hex) or addresses 01 to
FF (hex) (Start address is
fixed.)
Any range within the fol-
lowing settings:
Start address: 0006 to
7FFF (hex),
End address: 0006 to
FFFF (hex)
Page 61
Life control
method
Memory life control using
the Number of Writes
Control command
Battery life control using a
low battery check.
Page 64
Write protection setting
0000
Page
(8 bytes)
Page
(8 bytes)
0001
0002
0003
0006
0007
0008
0009
000F
0010
00FC
00FD
7
0
1 byte
Address
(hex)
Bit
Bit
•
•
•
•
•
Summary of Contents for CJ - 12-2004
Page 2: ...SYSMAC CS CJ Series ID Sensor Units Operation Manual Revised December 2004...
Page 3: ...iv...
Page 11: ...xii...
Page 55: ...36 Connections and Wiring Section 3 4...
Page 69: ...50 I O Data Allocations Section 4 3...
Page 91: ...72 Data Check Section 5 7...
Page 141: ...122 Sample Programming Appendix B...
Page 147: ...128 Revision History...