Memory Backup Battery - Casio DT-X7 Series Software Manual

Memory Backup Battery

The following shows levels available for the memory backup battery.
The DT-X7 system checks the status of the backup battery every five minutes. Since power source
of charging the memory backup battery is supplied by the battery pack, charging it may not be
carried out sufficiently if the battery pack has not been accommodated for a long period or is not
being fully charged. In other words, the memory backup battery will be normally charged if the
battery pack has a sufficient level of battery capacity. Prior to operating the terminal, be sure that
the memory backup battery is fully charged, otherwise the RAM content may not be held when
the battery pack is demounted.
Table 2.82
Level Notation
1 O.K.
2 Almost
exhausted
User Notification Methods
The system issues a WM_POWERBROADCAST message when the battery pack or memory
backup battery runs down into "Almost exhausted" state. Detail of the message is as follows:
Table 2.83
Battery
Battery Pack WM_POWERBROADCA
ST
Memory WM_POWERBROADCA
Backup ST
Battery
#define WM_POWERBROADCAST
#define PBT_APMBATTERYLOW
#define PBT_APMOEMEVENT
When the status of the memory backup battery is detected, the following value will be set in the
lParam.
#define SUBBATTERYLOW
The memory backup battery has been fully charged or has a
sufficient capacity.
The level of the memory backup battery capacity is at 10% or less.
Message
PBT_APMBATTERYLO
W
PBT_APMOEMEVENT
0x0218
0x0009
0x000B
0x200
125
Description
wParam lParam
0
SUBBATTER
YLOW
Interval of
notificatio
n
5 seconds
5 minutes