TonyJ (Customer) asked a question.

SureMotion Pro using SCL commad, executing Self Test there is are two undocumented commands HR and QT. Neither of these commands are in the SCL manual. Are these required commands? I will be moving a shaft forward and backwards.

I am running Windows 11, STP-USB485-4W, STP-MTR-17060, 4-wire, STP-MTR-17060.


  • ADC Community_02 (Automationdirect.com)

    Those commands are neither supported nor documented for our SureStep product line.

    Selected as Best
  • Tinker (Customer)

    If they are not documented, then it would seem logical that they are not required for normal use.

    I don't know why they exist, that is the thing about undocumented features, they are undocumented😀

  • TonyJ (Customer)

    I need to know this as I will be moving a stepper-motor using my own software. These commands appear to open and close an internal session using the drivers firmware.

  • ADC Community_02 (Automationdirect.com)

    Those commands are neither supported nor documented for our SureStep product line.

    Selected as Best