20 discrete input: transistor mode – ADLINK ND-6067 User Manual
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7.4.18 Form A Relay Output
From
Micro
Processor
+Vs
COM
RL n
NO
Power
Loading
External power ground
External Power Source
7.4.19 Discrete Input: Contact Mode
GND
To
Micro Processor
DI n-
DI n+
Photo
Coupler
Ext24V
External
Switch
7.4.20 Discrete Input: Transistor Mode
GND
To
Micro Processor
DI n-
DI n+
Photo
Coupler
Ext24V
External
Signal