Memory Map - Omron V600-CA1A Operation Manual

Data Carriers

2-2-2 Memory Map

Production Date Area (Written by Maker)
2-2-3 Write Protect Function
Setting the Write Protect Function
10
The Data Carrier (DC) has a memory area of up to 8K bytes. Each address of the
memory area specifies one byte. A single byte of data can be written to one
address.
8K
Address
0000 Month (10s digit)
H
0001 Year (10s digit)
H
Note 1. Address 0000 contains the month of production (March→"03," Octo-
ber→"10").
2. Address 0001 contains the lower two digits of the year (1997→"97").
3. This area is read only.
The memory is SRAM, so there is no limit on the number of times that data can
be read or overwritten.
The memory capacity is 8 KB, and the available addresses are 0000
The memory contents are preserved by a long-life lithium battery.
The write protect function protects important data stored in the memory of the
Data Carrier, such as product number and model, from being overwritten inad-
vertently. With this function, the data in a specified memory area can be pro-
tected. It is recommended that important data be write-protected as follows:
The write protect function is set in the four bytes of addresses 0002
0005 of the Data Carrier's memory. The status of the leftmost bit of address
H
0002 determines whether or not the write protect function is in effect.
H
Address
0000
H
Production date area
0001
H
0002
H
to
Write protect setting area
0005
H
0006
H
to
00FF
H
0100
H
to
01FF
H
to
0700
H
to
1FFF
H
Leftmost digit
Bit
7 6 5 4 3
Month (1s digit)
Year (1s digit)
Section
Data
to
to
to
to
Rightmost digit
1 byte
2 1 0
H
2-2
to 1FFF .
H
through
H