Figure 5 --- Serial port base I/O address selection switchesSwitch onbit = 0 Switch offbit = 1Factory default setting --- 0300 hexON2 0 0011 2 3 4 5 6SW200 0 00031 2 3 4 5 6SW100(no digits)Position 6 of SW2 is used to enable ordisable the interrupt status register.Another Example --- 5AC0 hexON2 0 8 4C1 2 3 4 5 6SW280 0 154A1 2 3 4 5 6SW100(no digits)ES-100MPosition 6 of SW2 is used to enable ordisable the interrupt status register.Factory default setting --- 0300 hexON02 0 0011 2 3 4 5 6SW200 0 00031 2 3 4 5 6SW100(no digits)Another Example --- 5AC0 hexON02 0 8 4C1 2 3 4 5 6SW280 0 154A1 2 3 4 5 6SW100(no digits)QS-100MQuatech QS-100M/ES-100M User's Manual 7