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Guest Guest_Sergei Troizky

Sink/Source inputs definition warning

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Attention everybody. The Mitsubishi definition of Sink/Source input is directly opposite to the Allen-Bradley's. Mitsubishi defines input by being sinked or sourced by the sensor or contact. AB defines input by being itself sinking or sourcing for connected external device. As a result, our company just built a machine with sensors opposite to customers specification. Our standard is Mitsubishi but this one was built on AB by cutomer's request. Conclusion: always ask to specify NPN/PNP, not Sink/Source inputs. By the way Omron and Aromat do exactly this.

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