Yamatake SDC35, User Manual

Page: 214 / 280

7 - 4 Definition of Data Addresses
7-12
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RAM and EEPROM areas of data addresses
Data addresses are categorized as follows:
Handling Precautions
EEPROM’s erase/write cycles are limited to about 100,000. Accordingly, it
is recommended that very frequently written parameters be written to
RAM, which does not have a limitation on cycles.
Note, with regard to writing to RAM, that data in EEPROM is transferred to
RAM when the power is turned ON again.
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Write data range
If the write value exceeds the range determined by parameters, writing is not
performed and an abnormal termination code is returned.
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Write conditions
An abnormal termination code is also returned when the writing is not possible
due to the conditions.
Chapter 7. CPL COMMUNICATION FUNCTION
Data address Name Remarks
(hexadecimal notation)
273W to 14859W RAM access data address Reading and writing of these addresses are
(0111 to 3A0B) both performed on RAM.
Since writing is not performed to EEPROM,
the value returns to that stored in EEPROM
after restarted.
16657W to 31243W EEPROM access data address Writing is performed to both RAM and
(4111 to 7A0B) EEPROM; reading is performed only on RAM.
Since writing is also performed to EEPROM,
the value does not change even after
restarted.