Hello
Studying the maintenance manual, I saw a diagram for connecting DI, which describes using of the internal power supply of the controller. On the one hand, it seems to be clear that if SDICOM is connected to 0V from an external PSU, and + 24V from an external PSU is applied to the inputs, respectively, then the circuit will work. But it's embarrassing that there is no such connection diagram in the manual, and the Note of Use says "Apply the +24 V power of the robot to the receiver."
Actually the question is: Is it safe to use an external power supply unit for discrete inputs on this controller?