Siemens G85139 - Manual (Page 33)

5. SYSTEM PARAMETERS English
Parameter Function Range
[Default]
Description / Notes
© Siemens plc 1997 G85139-H1750-U049-B
33 26/09/97
P947
P958
P963 Specific to PROFIBUS-DP. See PROFIBUS Handbook for further
P967 details.
P968 Access only possible with P099 = 1
P970
P971
•
EEPROM storage control 0 - 1
[1]
0 = Changes to parameter settings (including P971) are lost when
power is removed.
1 = Changes to parameter settings are retained during periods
when power is removed.
WARNING: When using the serial link to update the parameter
set held in EEPROM, care must be taken not to
exceed the maximum number of write cycles to this
EEPROM - this is approximately 50,000 write cycles.
Exceeding this number of write cycles would result
in corruption of the stored data and subsequent
data loss. The number of read cycles are unlimited.