Digital sensor output - PNP/NPN/PP or IO-Link?
February 29, 2012 // By David Lin, Uwe Malzahn and Álvaro Pineda García
In the development of sensors with digital switching outputs or communication interfaces for parameterization it has become necessary to provide a wide range of system variations for worldwide use. In Europe with its traditional 24V digital output a PNP output is usually required, whereas on the American and Asian markets the NPN version is more common.
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