adccommunitymod (AutomationDirect) asked a question.

Dynamic Positioning - read output pulses

Created Date: August 29,2010

Created By: dah79

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When using Dynamic Positioning is it possible to read the number of pulses on an HMI from the HO-CTRIO as they are being output? I want to set up some logical scaling based on the number of pulses.


  • adccommunitymod (AutomationDirect)

    Created Date: September 03,2010

    Created by: GKiser

    Dynamic Positioning - read output pulses

    It is possible to read from the CTRIO the number of pulses that have been output by using a System Function (see CTRIO manual). But this will by no means give you a dynamically changing value at any fast rate. Instead you would do something like set a bit with the HMI in the PLC, and that bit triggers a System Function sequence to the CTRIO, which then processes the request and returns the registers of Ch1/Fn1, Ch1/Fn2, Ch2/Fn1, Ch2/Fn2, Output 0, Output 1, Output 2 and Output 3 to V-memory. Then the HMI would be able to read the PLC's V-memory.

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  • adccommunitymod (AutomationDirect)

    Created Date: August 29,2010

    Created by: dah79

    When using Dynamic Positioning is it possible to read the number of pulses on an HMI from the HO-CTRIO as they are being output? I want to set up some logical scaling based on the number of pulses.