micrologix 1200 relay outputs

Hi all

This is my first post, I've started to program a Micrologix 1200 PLC and I don't understand how relay outputs work.

For example, If I set output channel 1 (O:0/1) from ladder logic, the LED is turned on but I can't detect any voltage with a multimeter.

I think I have to feed the output in some way. If I'm not wrong, can anybody tell me how?

Thanks in advance

H.Baal

You need to supply the power. See PDF below for wiring.