There are three methods.

[Change the setting on V series]
Change setting in Local mode > [System setting] > [Buzzer setting], and press [Apply] switch.

[Change the setting in the screen program]
Setting location: [System Setting] > [Unit Setting] > [Buzzer]

[Change the setting on V series while it is in RUN mode]
It can be changed by using macro command "SYS(SET_BZ)".
For more information, click here.