Omron SYSMAC C Series Operation Manual page 202

User Programming Examples
EEPROM Write Count
EEPROM Write Result
3. Bit 3 of word n (EEPROM Write Bit) is turned ON to write data from RAM to
EEPROM. When the write process has been completed, word 59 in RAM or
EEPROM (Total EEPROM Write Count) is incremented by 1.
For programming examples, see EEPROM Write Programming Example on
page 192.
There is a limit to the EEPROM write count. When the total EEPROM count ex-
ceeds 9,999, the RUN indicator will flash. If this occurs, replace the Unit.
The following bits of word 60 in RAM turn ON according to the result of the EE-
PROM write process.
Bit
01 Turns ON when the total EEPROM write count reaches 5,000 (see note).
02 Turns ON when the total EEPROM write count reaches 10,000. At the
same time, the RUN indicator flashes. Replace the Unit.
03 Turn ON when an internal diagnostic error occurs at startup. At the same
04 time, the ERROR indicator lights. Replace the Unit.
05
06
Note When the total write count reaches 5,000, write 4F43 (one word only) to enable
writing beyond 5,000 times. If 4F43 is not written, further writing to EEPROM will
not be possible.
Section
Status
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