adccommunitymod (AutomationDirect) asked a question.

Encoder input to CLICK plc

Created Date: July 26,2010

Created By: FronttnorF

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Is it possible to use a TRD-N100-RZWD encoder from AD which has 100ppr to indicate to the plc the velocity of a rotating shaft? The speed of the shaft is slow, .1-12 rpm. I guess I am wondering if I can just take one channel from the encoder and use it as an input for X1? The velocity of this application is such that it is adjustable for different speeds but once set it must maintain that speed relatively closely. Thanks for your help.


  • adccommunitymod (AutomationDirect)

    Created Date: July 26,2010

    Created by: bcarlton

    You should be able to setup that input as an interrupt. Write the interrupt routine to increment a register. Use a timed interrupt to take the reading and translate that to a speed.

  • adccommunitymod (AutomationDirect)

    Created Date: July 26,2010

    Created by: FronttnorF

    Is it possible to use a TRD-N100-RZWD encoder from AD which has 100ppr to indicate to the plc the velocity of a rotating shaft? The speed of the shaft is slow, .1-12 rpm. I guess I am wondering if I can just take one channel from the encoder and use it as an input for X1? The velocity of this application is such that it is adjustable for different speeds but once set it must maintain that speed relatively closely. Thanks for your help.

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