sinking/sourcing

I'm still looking for my answer.
The question was , What do we mean when we say a signal is sinking or sourcing?

What is the connection for a sinking or sourcing signal in terms of 24V or 0V?

Thanks

Watch the attitude.

Did you go to the link that TimeFluxCap gave you in your LAST POST?

Did you try a search on this site, using the button at the top of the page? A quick search on SINKING gives 28 threads, at least one of which answers your question.

Please, speak PNP and NPN, my English skill is very limited.

The voltage is irrelevant, 12v, 24v, etc...
Excerpt;
Sinking and sourcing are terms used to describe how an associated load (the device being turned on or off by the sensor) is powered in relation to the sensor. Sinking, the more widely used of the two, involves the switching of load current (power) supplied by a power source external to the sensor. In a sinking configuration, current passes through the load first, through the output switch of the sensor second and lastly to ground. A sensor with a sinking output switches the ground, or negative, leg of the circuit. In contrast, sourcing refers to a configuration in which the sensor is the source of the current required to power the load. In a sourcing situation, current supplied by the sensor passes through the load second and then to ground. A sensor with a sourcing output switches the positive leg of the circuit.

Roger