Denso BHT-200QW Spezifikationen PDF herunterladen (Seite 144)

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10.1 Sleep Function

The BHT supports the sleep function that automatically interrupts program execution if no

event takes place within the specified length of time in the BHT, thereby minimizing its power

consumption. Upon detection of any event, the BHT in the sleep state immediately starts the

interrupted user program.

By using the OUT statement, you may set the desired length of time to the sleep timer within

the range from 0 to 25.5 seconds in increment of 100 ms. The default is 1 second.

When setting the sleep timer, the OUT statement also copies (assigns) the set value to its

internal variable. The sleep timer immediately starts counting down the value assigned to the

internal variable, -1 per 100 ms. If the value becomes 0, the BHT goes into a sleep.

Note that the sleep timer will not count in any of the following cases. When the BHT exits from

any of them, the value preset to the sleep timer will be assigned to the internal variable again

and the sleep timer will start counting.

• While a communications device file is opened by an OPEN "COM:" statement.

• During execution of a SEARCH, DATE$, or TIME$ function.

• When a value less than 10 seconds is set to a TIMEA, TIMEB, or TIMEC function so that

the returned value is a nonzero.

• When the bar code device file is opened by the OPEN " BAR:" statement under any of the

following conditions:

- With the continuous reading mode specified

- With the momentary switching mode or auto-off mode specified, and with the trigger

switch held down

- With the alternate switching mode, and with the illumination LED being on

• When any key is held down.

• When the backlight is on (except when the backlight is kept on).

• When the beeper is beeping.

• When the vibrator is working.

• When the BHT is updating data on the screen.

• When the BHT is writing data into a data file.

• When a register variable is undergoing change.

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