Thanks for quick reply, I submitted a Help Desk ticket.
So does it mean that currently there is no option or workaround to change the increment value to other than 1?
As far as I can see, the chipset can handle fractions. I tried to set decimal wattage value in EScribe, for example 20.5 W, EScribe accepts that value, I can also upload it into the device. But decimal value is cut off on the mod's display and changing value on mod still increments it by 1 like 21.5 W. I could check that change by downloading the mod's settings after I incremented the wattage on the mod.