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High Speed Counter Help

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I am new to this forum.  I am working with an sm35-j-r20 oplc and would like to configure a HSC to accept pulses from a turbine flowmeter.  the oplc is setup for pnp inputs but i believe the pickup i have is npn.  which high speed counter wiring diagram should i follow pnp or npn?


how would the hardware setup need to be configured to accept this count?


thank you,

Ricardo L.

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