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7.3.3.3 Outputting an audio signal
Necessary function of library AsRfbExt: RfbExtStartProcess()
Function RfbExtStartProcess() is used to start the beep process and output an audio signal on the Power Panel.
Here, parameter pcmdLine is used to call the command line process as follows:
Call syntax
beep [frequency] [duration]
Parameter
frequency
duration
If a value is not specified, the default setting is used.
Example
pcmdLine: beep 880 400
An audio signal with 880 Hz and duration of 400 ms is output.
Implementation
The VNC-based HMI application can output an audio signal using function RfbExtStartProcess() in order to clearly illustrate certain
states or actions.
Calling beep with specific parameters does not change the default setting for the device.
The default audio signal setting is configured on service page Audio or in Automation Studio (see section
uration" on page
52).
Information:
Emitting an audible tone with beep is always done independently of the setting on service page Audio
(see
"Service page Audio" on page
Power Panel FT50 User's manual V1.19
... Frequency of the audio signal in hertz [Hz].
Valid range: 10 - 15000
... Duration of the audio signal in milliseconds [ms].
Valid range: 10 - 500
64).
Configuration
"Config-
87
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