Casio IT-9000 Series Especificaciones descargar pdf (Pagina 151)

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Memory Backup Battery

The following shows levels available for the memory backup battery.

The terminal’s 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 charged fully; otherwise the RAM content may not be held

when the battery pack is demounted.

Table 2.103

Level Notation Description

1 O.K. The memory backup battery has been fully charged or has a

sufficient capacity.

2 Almost

exhausted

The level of the memory backup battery capacity is at 10% or less.

User Notification Methods

The terminal’s 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 2.104

Battery Message wParam lParam

Interval of

notification

Battery

Pack

WM_POWERBROADCAST PBT_APMBATTERYLOW 0 5 seconds

Memory

backup

Battery

WM_POWERBROADCAST PBT_APMOEMEVENT SUBBATTER

YLOW

5 minutes

#define WM_POWERBROADCAST 0x0218

#define PBT_APMBATTERYLOW 0x0009

#define PBT_APMOEMEVENT 0x000B

When the status of the memory backup battery is detected, the following value is set in the

lParam parameter.

#define SUBBATTERYLOW 0x200

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