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Beeper Control

PowerNet Twin Client User Guide < 6-7 >

Beeper Control

The beep duration and frequency, and the scan beep duration and

frequency may be set using extended commands. These commands

allow setting the duration of the beeps in milliseconds. The duration on

the Falcon has a granularity of 55 ms because of its PC-based

architecture. This means that any duration is rounded up to the next

multiple of 55 ms. For example, setting a duration of 60 ms actually

causes the beeper to sound for 110 ms.

The frequency is set in hertz. If the frequency is set to zero, the terminal

uses the optimum frequency for the Falcon’s speaker. To control the

beeps, the following escape sequence can be used:

;<Scan_Freq>z

The default settings for the beep are a duration of 150 ms with a

frequency setting of

zero (0) while the scan beep defaults to a duration

of 300 ms with a frequency setting of

zero (0). The following example

illustrates setting the default values:

<ESC>[!6;1;150;0;300;0z

(HEX equivalent: 1B 5B 21 36 3B 31 3B 31 35 30

3B 30 3B 33 30 30 3B 30 7A)

If desired, the default settings can be changed. For example, to set a beep

of 110 ms at 500 Hz and a scan beep of 220 ms at 1000 Hz, the

following sequence is used:

<ESC>[!6;1;110;500;220;1000z

(HEX equivalent: 1B 5B 21 36 3B 31 3B 31 31 30

3B 35 30 30 3B 32 32 30 3B 31 30 30 30 7A)

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PSC FALCON 315 Guía de usuario Pagina 85