Hitachi HF-W7500 40, Руководство пользователя

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3. SETTING UP THE RAS FEATURE
3-5
(2) Watchdog timer setting
You can set up the watchdog timer of this equipment.
You can select one of the following ways of using the watchdog timer:
• Not used
• Retriggered by an application program
• Automatic retrigger
Click the radio button corresponding to the item you want to select.
The default factory setting is “
Not used ”.
Figure 3-3 Items in Watchdog Timer Setting
● Not used:
If you select this item, the watchdog timer is stopped. The watchdog timer will not
time out. In addition, you cannot use the watchdog timer by calling the WdtControl
function of the RAS library.
● Retriggered by application programs:
If you select this item, you can monitor the operational state of a user program by
controlling the watchdog timer using the WdtControl function in the RAS library.
NOTE
When you change the setting to “ Retriggered by application program ,” the
watchdog timer is stopped once. While the watchdog timer is stopped, it will
never time out. When a user application retriggers the watchdog timer by using
the WdtControl function of the RAS library, the watchdog timer resumes a
countdown. The state of the watchdog timer (whether it is counting down or
stopped) can be checked using the WdtControl function.