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  1. EtherCAT Master DTM
  2. DTMV1ECM-305

Addresses in process data can be incorrect

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: V1.1000.4.6738, V1.1100.4.8584
    • Component/s: DTM
    • Labels:
      None
    • Account:
      SPC EtherCat Master (SPCETHERCATMA)

      Description

      Using a "IL EC BK-PAC V1.0" slave, the process data is incorrect.

      Size of status data should be 8 bytes but is 8.4 Bytes long.

      Reason is an overwritten 'gap' PDO entry. 'gap' entries are defined by using index = 0 and subindex = 0.

      Since the slave defines 2 'gap' entries (first one with 4 bits, the second with 8 bits), the wrong overwrite does produce 2 gaps with 8 byte each.

      See attached project in linked support issue.

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                • Reporter:
                  MHofmann Martin Hofmann
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                  • Created:
                    Updated:
                    Resolved: