Hitachi RX Technical Manual page 28

SW1
(Precautions when using combination of NPN/PNP interfaces)
● Use either NPN or PNP interface for input/output signals #5 to 6 and #11 to 24. Do not use a combination
of the interfaces for these input/output signals.
● Interfaces can be combined for units of print material sensor signals (#1 to 4), encoder signals (#7 to 10),
input/output signals (#5 to 6, #11 to 24) and status output signals (#25 to 28).
(For example, PNP interface can be used for print material sensor and NPN interface can be used for
status output signals (#25 to 28).
EZJ110 board
SW2
SW1
ON
1 2 3 4 5
SW2
NPN
●Input/output (I/O) signal connection 4-7
ON
6 7 8
OFF
PNP
ON
OFF