Yamaha SRCP - Manual (Page 39)

3-
11
3
I/O INTERF
ACE
3-4 I/O Circuits
3-4-2 I/O circuit and connection example
I/O circuit and connection example
External DC24V
power supply
Push-button
NPN transistor
Incandescent lamp
Solenoid valve
Input signal
Photocoupler
Output signal
Controller side
DI
DO
DO
DI
24V
24G
FG + -
Pulse output circuit connection example
26LS32 or equivalent 26LS31 or equivalent
Controller side
PA+
PA-
PB+
PB-
PZ+
PZ-
PZM+
PZM-