Omron CJ1W-V680C11, Руководство пользователя

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SECTION 5
Write P
rotection
SECTION 5
ID Sensor Unit Functions
105
RFID System
User's Manual
Write Protection Setting Examples
The following settings would write-protect addresses 0001 through 0012 hex:
End Address Set to 00 Hex
The entire memory except address 0000 hex is write-protected by setting the end address to 00
hex, as shown below.
The write protection setting area in the RF Tag is not write-protected.

V600 SRAM Write Protection Method
(The following information applies when the V600 write protection
method is set and V680-D2K/8K/32KF
@@
RF Tags are used.)
Write protection is set by writing the start address and the end address to be protected in addresses
0002 to 0005 hex of the RF Tag. The area between the start address and the end address will be write-
protected. The status of the most significant bit of address 0002 hex determines whether write
protection is enabled.
If the V600 SRAM write protection method is being used and write protection is enabled in the ID
Sensor Unit, addresses 0000 and 0001 hex will always be write-protected (regardless of the write
protection enable/disable setting in the RF Tag).
Memory Map of Write Protection Setting Area for V600 EEPROM Write Protection Method
• Setting of MSB of Address 0002 Hex
ON: Write protection enabled
OFF: Write protection disabled
• Range in RF Tag for Which Write Protection Can Be Set
Start address: 0006 to 7FFF hex
End address: 0006 to FFFF hex
If write protection is enabled, write separately to the write protection setting area (addresses 0002 to 0005 hex) and the
rest of the RF Tag (addresses 0006 hex and higher). If the MSB of address 0002 hex is ON and you write both the write
protection setting area (addresses 0002 to 0005 hex) and following addresses at the same time, a write protection error
will occur.
Address
(hex)
Upper digit Lower digit
0000
1 0 0 0 0 0 0 0
8 0
Address
(hex)
Upper digit Lower digit
0000
1 0 0 0 0 0 0 0
8 0
0000 hex
0012 hex
03E7 hex
Write-protected
0000 hex
03E7 hex
Write-protected
Address (hex) 7 6 5 4 3 2 1 0
0002
Enable/
Disable Bit
Upper two digits of start address (00 to 7F hex)
0003 Lower two digits of start address (00 to FF hex)
0004 Upper two digits of end address (00 to FF hex)
0005 Lower two digits of end address (00 to FF hex)