CAME PS Série Manuel D'installation page 104

PS BARCODE - Hardware and wiring
36
In the "Loaded Coins" box set the number of coins that
you are going to actually load into the cash register.
The right-hand buttons increase the number, while those
on the right, decrease the number.
Click on the SAVE button to validate the
changes
Insert the coins into the apposite container which
is located just behind the cash register front-piece,
while being careful to enter the exact number of coins
registered on the software.