Omron NT20S Operation Manual page 212

NT20S Status Control
S Continuous buzzer (bit 13) and intermittent buzzer (bit 12)
In the case of both buzzers, when the respective bit is ON the buzzer sounds and
when it is OFF the buzzer does not sound.
The "continuous buzzer" sounds continuously without interruption.
The "intermittent buzzer" sounds for 0.5 seconds at 0.5 second intervals.
If both Bit 13 and Bit 12 are turned ON simultaneously, Bit 13 takes priority and
the continuous buzzer is selected.
Another way to stop a buzzer sounding is to use a touch switch to which the buzzer
stop attribute function is allocated.
Whether or not the buzzer actually sounds also depends on the setting of the
"buzzer" memory switch of the NT20S. For details on this setting, see "Using the
Buzzer" (page 92).
Besides using PT status control bit operations, the buzzer status can also be con-
trolled by the screen attributes. The screen attributes are set by using the support
tool. The functions that can be set using the screen attributes are the following:
Buzzer attribute:
S Backlight mode (bit 8)
If bit 8 is turned ON when the screen is displayed (bit 15 = ON), the screen is
made to flash using the backlight. When bit 8 is turned OFF, normal display is
resumed.
When the screen is not displayed (bit 15 = OFF), the backlight mode is invalid.
It is possible to use NT20S switch settings to make the backlight go off automati-
cally after a set time during which there have been no operations.
Besides using PT status control bit operations, the backlight status can also be
controlled by the screen attributes. The screen attributes are set by using the sup-
port tool. The functions that can be set using the screen attributes are the follow-
ing:
Backlight:
Set whether or not the buzzer will sound when the
screen is displayed and, if it sounds, the type of buzz-
er.
Set whether the backlight will be continuously or inter-
mittently lit when the screen is displayed.
Section 5-4
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