Yokogawa 414 Batch Controller - Manual (Page 26)

Connection of Output Pulse and Flow Alarm are as follows:
Driving an External Relay or Impulse Counter
Driving a Logic Input such as a PLC or Electronic Counter
5.6 ohms
33V
Zener
12
DC Supply
Relay or
Impulse Counter
11 DC Supply
Out (8-24V)
5.6 ohms
33V
Zener
2
External Load
Resistor 10K
Logic Input
24 Operation