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2.2.2 Power ON Process
Overview
The ON process is provided to make the system ready for use (ON state). The actual process varies
depending on the settings at that point in time and the last OFF factor (the cause of the OFF action).
ON factors:
Pressing the Power switch
Pressing the RESET switch
Power ON alarm
Reception of RING signal
Mounting on the I/O Box
OFF factors:
Pressing the Power switch
Pressing the RESET switch
Auto Power OFF (APO)
Power OFF by software
Auto Power OFF due to lower battery voltage
Emergency Power OFF due to lower battery voltage
Note:
For more information power OFF factors refer to Chapter 2.2.3 "Power OFF Process".
This ON process is divided into two processes: the "Resume process" for continuing the previous
process and the "Boot process" for re-loading MS-DOS. The Boot process can be further broken into
the "Application boot" and the "System Menu boot" processes.
Fig. 2.4
Application Boot Process
Searches CONFIG.SYS and AUTOEXEC.BAT files according to the priority given to each drive
and, if these files are found, sets the drive where these files are located as the current drive.
(refer to ”Application Boot Process” on the next page).
ON Process
Resume Process
Boot Process
Application Boot Process
System Menu Boot Process