Among 4 DIP switches, setup with the two DIP switches on the right side and the Rotary switch.

When the DIP switch is UP, it is ON. When the DIP switch is Down, it is OFF.
When the 2^nd DIP switch from the right is ON, set 32. When the DIP switch on the right side is ON, set 16.
Set a number from 0 to 15 (from 0 to F) in the Rotary switch. Sum up all the numbers, and it becomes the S-NO of the unit.