Epson RC620+ Manual page 51

Typical Input Circuit Application 2
RC620DU Rev.5
I/O-1
1 Input No.0 to 7 common
2 Input No.0
3 Input No.1
(Same)
4 Input No.2
(Same)
5 Input No.3
(Same)
6 Input No.4
(Same)
7 Input No.5
(Same)
8 Input No.6
(Same)
9 Input No.7
(Same)
18 Input No.8 to 15 common
(Same)
19 Input No.8
20 Input No.9
Omit
Setup & Operation 7. I/O Connector
GND +DC
39