Set the multi measure to DC voltage. This is indicated by one the letters "VDC" or "DCV" or by a symbol which localities like 3 with lines above a full line. There are usually several levels in the DC Tension setting. Chemists the "600" level.

The power will the to be ON to to this test, so use caution when to the following. to two of the Probe wires to the power supply. If the color combination of the wire is blue, black, and brown, then normally, the blue wire connects to 0v and the brown wire connects to positive volts. contact the black measure probe to the 0V wire of the sensor. to the red measure probe to the signal output wire of the sensor. This wire is normally black. The measure should read "0."

Force the Probe to output. If it is a photoelectric sensor, block the photoelectric beam. If it is an inductive proximity switch, to a small piece of metal in front of the sensor. For an irresolute sensor or a capacitive sensor, you can just use your hand to to the Probe output. Be sour that the Probe is detection the object. much sensors to a small LED that illuminates when the Probe detects it's target.

Watch the measure display as you force the Probe to output. If the reading changes to a number enter 10 and 30, then the Probe output is a PNP type, too known as "sourcing." If the measure display remainders at "0", then the Probe output is an NPN type, too known as "sinking."

If you To that the Probe is NPN, there is an additional test that may be fact to confirm. to the measure probes of the wires. Now place the red measure probe on the positive Tension sensor wire, normally a brown wire. contact the black measure probe to the signal output wire of the sensor, normally black. When the Probe does not to it's target, the measure display would read enter 10 and 30. When the Probe senses an object, the posting should drop to "0." This will to that the Probe has an NPN uncaring output.