Omron V600-CA8A-V Series Operation Manual page 25

Data Carrier Memory Map
Example 2
Canceling Write Protection
Memory Exceeding 256 Bytes
All bytes from 0001 through 00FD will be write-protected when bit 7 is ON and
the end address is set to 00.
Address
0000
0001
É É É É É É
É É É É É É
É É É É É É
É É É É É É
00FD
Address
0000 1
To cancel write protection, clear the most significant bit of address 0000 to 0. The
write protection will be cancelled and the end address specified in 0000 will be
invalid.
Specify the four bytes in DC addresses 0002 to 0005. The most significant bit
(MSB) of address 0002 is used to specify whether a write protect specification is
to be made or not.
Bit 7
Address
0002 Y/N
0003 Start address upper two bits
0004 End address lower two bits
0005 End address upper two bits
Note 1. When the write protect control bit (most significant bit of address 0002) is 1
(Y), write protect is ON and when it is 0 (N), write protect is OFF.
2. The start address of the available setting area is 0006 to FFFF and the end
address is 0006 to FFFF.
The following is an example of the conditions of addresses 0006 to 07FF to be
write protected.
Address
0002
1
8
0003 0
0
0004 0
0
0005
1
F
Write-protected area
Higher digits
0 0 0 0
8
6 5 4
Start address lower two bits
Upper bits
0 0 0
0 0 0
0 0 0
1 1 1
Section
Lower digits
0 0 0
0
3 2 1
Lower bits
0 0 0
0
0 1 1
6
0 1 1
7
1 1 1
F
3-2
0
0
0
1
1
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