Write Protection Examples - Omron SYSMAC C200H-IDS01-V1 Operation Manual

The User Program
2-3-4

Write Protection Examples

Bit
Address 0002
Address 0003
Address 0004
Address 0005
Bit 7 of address 0002
Example 1:
Clearing Write Protection
32
to be write-protected to address 0001 and the succeeding ad-
dresses.
Data written to the Data Carrier can be write-protected. First, write the data to
the desired area of the Data Carrier's memory by using Write, then write-pro-
tect the area using the procedures described in this section.
Addresses 0002 through 0005 of the Data Carrier's memory are used to
enable and clear the write protect function. Set these addresses as follows:
7 6 5 4
Write
3
X16
protect
1
X16
3
X16
1
X16
1
0
To clear the write protect function, turn OFF all address bits from 0002
through 0005.
To disable or clear write protection, turn OFF address bits 0002 through 0007.
If the only 0 bit is the 7th bit of address 0002, the write protect function is
ignored.
Bit
Address 0002
Address 0003
Address 0004
Address 0005
3 2 1 0
2
X16
0
X16
2
X16
0
X16
Enables write protect function
Clears write protect function
7 6 5
0 0 0
0
0 0 0
0
0 0 0
0
0 0 0
0
Section 2-3
Write protect begin-
ning address
Setting range: 0006
through 07FF
Write protect end
address
Setting range: 0006
through FFFF
When 0800 is set to
FFFF; 07FF is assumed.
4 3 2 1
0 0 0 0
0
0 0 0 0
0
0 0 0 0
0
0 0 0 0
0
0
0
0
0
0