B&B Electronics VFG3000 - Manual - Manual (Page 228)

B EEP ( FREQ , PERIOD ) V LINX F IELDBUS G ATEWAY M ANAGER U SER M ANUAL
P AGE 212
B
EEP
(
FREQ
,
PERIOD
)
A RGUMENT T YPE D ESCRIPTION
freq int The required frequency in semitones.
period int The required period in milliseconds.
D
ESCRIPTION
Sounds the terminal’s beeper for the indicated period at the indicated pitch. Passing a value of
zero for
period will turn off the beeper. Beep requests are not queued, so calling the function
will immediately override any previous calls. For those of you with a musical bent, the freq
argument is calibrated in semitones. On a more serious “note”, the Beep function can be a
useful debugging aid, as it provides an asynchronous method of signaling the handling of an
event, or the execution of a program step.
F
UNCTION
T
YPE
This function is active.
R ETURN T YPE
This function does not return a value.
E XAMPLE
Beep(60, 100)