Hello,
I have an Omron E3FA-DN11 2M, Photoelectric sensor. I want to feed robot with the data, Can I do that?
Or do I need some external device to connect?
Thanks
Your sensor is NPN and won’t be able to be wired to the controller directly. 
You will need a relay between the sensor and the robot controller.
If I were you, I would get the E3FA-DP11 2M instead. It’s PNP and can be connected directly to the controller (brown to 24V, blue to 0V, black/white to DI).
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