Omron V680 - Page 33

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RFID System
User's Manual
Section 2 Tags
Section 2
Specifications and Performance
Write Protection Function
The write protection function prevents important data, such as product information, stored in memory in
a Tag from being inadvertently overwritten.
After important data has been written to memory, it can be write-protected using the following method.
The write protect function setting can be switched with switches 4 to 7 (Write Protect Function Setting) of the V680-
CA5D
@@-V2 Controller.
 Setting the Write Protection Function
Write protection is set in Tag addresses 0000H to 0003H.
The setting for the most significant bit of address 0000H specifies whether or not write protection is enabled.
• Write-protect Bit (Most significant bit of address 0000H)
1: Write-protected (Yes)
0: Not write-protected (No)
• Write Protection Setting Area
Start address: 0000
H to 7FFFH
End address: 0000H to FFFFH
 Write Protection Setting Examples
• Settings to write-protect addresses 0008H through 03E7H:
• Settings to not write-protect any addresses:
The write protect function is a function of the V680-CA5D@@-V2 Controller. This function is not supported by reader/
writer units of other brands.
Address Bit 7 6 5 4 3 2 1 0
0000
H
YES/
NO
Upper two digits of start address (00 to 7F)
0001
H Lower two digits of start address (00to FF)
0002
H Upper two digits of end address (00 to FF)
0003
H Lower two digits of end address (00 to FF)
Address Bit 7 6 5 4 3 2 1 0
0000
H
10000000
80
0001
H
00001000
08
0002
H
00000011
03
0003
H
11100111
E7
Address Bit 7 6 5 4 3 2 1 0
0000
H
00000000
00
0001
H
00000000
00
0002
H
00000000
00
0003
H
00000000
00