SATO S84ex Operator's Manual page 369

Input/Output circuit diagram of 25 pins external signal interface (DB 25 pins, female
terminal)
When the output from the user is NPN transistor output
[Power is supplied from the user]
[Power is supplied from the printer]
User
IN_COM
+5V~+24V
Transistor
(NPN)
EXT_I
Pow
EXT_O
Photo coupler OUT_COM
User
GND
IN_COM
Transistor
EXT_I
(NPN)
Pow
EXT_O
Photo coupler
OUT_COM
Printer
IN
Photo coupler
Photo Mos FET
OUT
Printer
+5V
IN
Photo coupler
Photo Mos FET
OUT
S84-ex/S86-ex Operator Manual
8 Appendix
367