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  1. PROFINET IO-Controller
  2. PSPNM-682

IO Controller never sets its APDU_STATUS.RUN in case of input-only IO Devices

    Details

    • Type: Change
    • Status: Closed
    • Priority: Trivial
    • Resolution: Fixed
    • Affects Version/s: V2.7.0.0
    • Fix Version/s: V2.7.0.2, V2.7.1.0
    • Component/s: None
    • Labels:
      None
    • Account:
      SPC Profinet Master (SPCPROFINETMA)

      Description

      If an IO Device has only input submodules and no outputs at all then the IO Controller will never signal "RUN" in its cyclic frames sent to this IO Device automatically.

      The change from "STOP" to "RUN" is done with the first update of IO data provided by the host. However for input-only IO Devices a host may never write IO data as there is none. For this special case it seems appropriate to directly use "RUN" instead of "STOP".

      This is just a cosmetic issue as

      • IO Devices shall not derive any information from APDU_STATUS.RUN
      • IOPS / IOCS is still handled correctly by IO Controller

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                • Reporter:
                  BMeyer Benjamin Meyer
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