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Warning
These are advanced settings/features and they should be left with default values in almost all cases. Please be careful when changing these settings from their default values.

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  • Enable Tag Latching
    • Whether or not to enable Tag latching to synchronize MQTT Tag updates with events in Ignition.

  • Latch Timeout

    • The amount of time to wait for a Tag latch to be released before timing out.

  • Latch Tags

    • A semicolon separated list comma separated list of Trigger Tag and Latch Tag pairs.
  • Filtered Properties
    • A semicolon delimited list of Tag properties to filter/ignore on received Tags.
    • By default the filtered properties list contains:  accessRights;clampMode;deadband;deadbandMode;formatString;historicalDeadband;historicalDeadbandMode;historicalDeadbandStyle;historyEnabled;historyMaxAge;historyMaxAgeUnits;historyProvider;historySampleRate;historySampleRateUnits;historyTagGroup;historyTimeDeadband;historyTimeDeadbandUnits;opcItemPath;opcServer;permissionModel;rawHigh;rawLow;sampleMode;scaleFactor;scaleMode;scaledHigh;scaledLow;tagGroup;valueSource;expression;expressionType;ConfiguredTagPath;eventScripts;readPermissions;writePermissions;eventScripts

  • Enable BD Sequence Validation

    • Whether or not to enable BIRTH/DEATH sequence number validation (required by Sparkplug specification).
  • Enable Metric Timestamp Validation
    • Enables/disables validation of metric timestamps against the current tag value timestamp before writing. If enabled, tag writes will only occur if the new incoming metric timestamp is newer than the current tag timestamp.
  • Custom Properties
    • Do not use unless instructed to by Cirrus Link personnel.

  • Enable Primary Host Subscriptions

    • Whether or not to enable MQTT Engine subscriptions on STATE/# and State/# topics even when a PrimaryHostID is not configured within MQTT Engine. This setting is for debugging purposes only.
  • Primary Host Control Tags
    • A semicolon separated list of comma separated Primary Host Control tags triples (e.g., tagPath1,tagDataType1,tagValue1;tagPath2,tagDataType2,tagValue2). Review MQTT Engine Primary Host Control for additional information.
    • Supported tag DataTypes are: Byte, Short, Integer, Long, Float, Double, Boolean and String

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