GE PACSystems RX7i Reference Manual page 118

Super Capacitor
In the event of loss of system power, the internal super capacitor maintains power long enough for the
CPE100/CPE115 to write its user memory contents to non-volatile storage (flash) memory.
Operation
When the CPE100/CPE115 is powered up for the first time, or is in a system that has been powered down
long enough to completely discharge the internal super capacitor, it may additional require 70 to 75
seconds for it to charge to its operating level. The CPE100/CPE115 does not provide any status
information about the state of internal super capacitor during power-up.
Life Expectancy
The super capacitor's life is computed based on unit's ambient temperature and is given by the below
estimates.
Product Limitations
This section lists the known limitations and features that are currently not supported by
CPE100/CPE115:
1. SNTP is not supported at the time of publication.
2. C Toolkit is not supported at the time of publication.
3. RDSD is not supported at the time of publication.
4. Timed interrupt blocks are not supported.
Note: The above features may be supported in a subsequent firmware version. Refer to the data
sheet for more information.
GFK-2222AD
Surrounding Air
Temperature near Capacitor
10°C
20°C
30°C
40°C
50°C
60°C
70°C
April 2018
Chapter 2. CPU Features & Specifications
Typical Life Expectancy
(in Years)
15
15
15
15
15
8.1
2.8
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