05-09-2023, 12:39 AM
D1,D2... if use for LED state feedback.
your A4S output port feedback +12v to D1,D2.... so that LED on switch panel will be ON.
if you want to test, you can connect D1,D2 with +12v, so that switch panel's LED will be ON.
your A4S output port feedback +12v to D1,D2.... so that LED on switch panel will be ON.
if you want to test, you can connect D1,D2 with +12v, so that switch panel's LED will be ON.