Omron SYSMAC C200H-IDS01-V1, Руководство по эксплуатации

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26
The User Program
Section 2-3
Note The last two bytes of a check area are for the check code area, to which noth-
ing must be written.
Management of
Overwriting Operations 1 By counting the number of writing operations, it is possible to detect if the
EEPROM DC has been overwritten for 100,000 times.
Usage After writing data to the most frequently used address, renew the number of
overwriting operations in order to check the life of the EEPROM. It is possible
to overwrite data to each address for 100,000 times. Therefore, it is necessary
to count the number of overwriting operations of the most frequently used
address. It is also possible to check the life of the EEPROM without renewing
the number of overwriting operations.
0000
0001
Address
First address
No. of area bytes
CRC (upper digit)
CRC (lower digit)
Check code calculation area
(no. of check bytes
−
2)
Check code area (2 bytes)
Check area
Renewal of the number of
writing operations/Life check
Right
stage
Life check
stage
Data right
Life check