Solution:

Jumper setting of POS-102 ? J8 jumper setting INTC INTD INT A INTB J8 CON2 INT 21 INT 22 INT23 INT24 1-2 AD29 INT D INT A INT B INT C 2-3 For example if you set J8 to 1-2 then CON2 first INT (INT 21)will connect to INT C. IF you set J8 to 2-3 then INT 21 will be connect ot INT D. ? J7 Jumper setting INT A INT B INT C INT D J7 CON1 INT 11 INT 21 INT 31 INT41 1-2 AD28 INT B INT C INT D INT A 2-3 AD31 For example if you set J7 to 1-2 then CON1 first INT (INT 11)will connect to INT A. IF you set J8 to 2-3 then INT 11 will be connect ot INT B.