Merge (Combine slots)Example: Merge slot 111 and 112
Open door
Open machine
Enter developer password: 80515
Open menu
Go to the ComToSubUnit (33 or 34) tab
Perform merging
The input is done in three lines. Example:
1 254
202 53
11 244
Logic of the third line:
A = slot number – 100
→ 111 - 100 = 11
B = 255 – A
→ 255 - 11 = 244
So you get 11 / 244 for merging slot 111 and 112.

Split (Split slots)Example: Split slot 111 / 112 again
Open door & enter password
Open vending machine
Enter developer password: 80515
Open menu
Switch back to ComToSubUnit (33 or 34)
Do the split
Enter input like this:
1 254
201 54
11 244
Logic of the last two values (A & B):
A = slot number - 100
→ 111 - 100 = 11
B = 255 - A
→ 255 - 11 = 244
This will split the slot again.

With this logic you can connect or disconnect all slots of a master-slave combination.
The structure of the first two lines always stays the same, only the third line gets adjusted.