Elephant Robotics myCobot Pro 600 User Manual page 90

Figure 3- 15 Input and output interface description
It should be noted that the input public terminal needs to be connected to
24V power supply. It can be determined whether the input is active high or active
low according to the common configuration (hardware connection determines
24V or 0V). As shown in Figure 3-16, when the common terminal is connected
to 24V, once an external device inputs 0V, the input signal is in the "High" state,
otherwise it is in the "Low" state; vice versa.
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