Two wire Sensor for S7-200 is it posisble?

Hi,

I think it is possible. Normally a two-wire proximity sensor works like switch. But be careful when wiring the sensor I’ve already burn a sensor my self for few months ago.

If you wire (+) and (-) then you sense an object, you have just short (+) and (-) and sensor will burn. So first thing is, you have to use a load. It can be a relay, bulb, but you can also use your plc in put as a load.

See the attachment.

Best regards.