Omron V600 Operation Manual page 26

Data Carrier
Write-protect Setting
Examples (2-Kbyte
Memory Data Carrier)
Cancelling Write Protection
When Addresses 0015
H
Start address < End address
Address
0002
H H
0003
H H
0004
H H
0005
H H
to
07FF
H
When Only One Byte is Write-protected
Start address = End address
The same address is specified for the start and end addresses.
1 byte
When the End Address is Greater than the Last Address in the Data Carrier
End address > 07FF
Since the memory area in the Data Carrier is from 0000
between the start address and 07FF
0000
H
07FF
H
When the Start Address is Greater than the End Address
Start address > End address
The area between 0006
start address and 07FF
0000
H
0006
H
07FF
H
To cancel write protection, set the most significant bit of address 0002
write-protection specified in address 0002
cordingly, the write protection will be cancelled.
to 0120 are Write-protected
H
Bit
7 6 5 4
1 0 0 0
8
0 0 0 1
0
0 0 0 0
0
0 0 1 0
2
Write-protect area
Write-protect area
H
is write-protected.
H
Write-protect area
and the end address and the area between the
H
are write-protected.
H
End address
Start address
to 0005
H
Section 2-9
3 2 1 0
0 0 0 0
0
0 1 0 1
5
0 0 0 1
1
0 0 0 0
0
to 07FF , the area
H H
to 0. The
H
will become invalid. Ac-
H
21