BHDO 4.0.15

2 min

Release Date: July 31, 2026

Review the current list of Limitations.

Enhancements

Description
DeviceHub: The MQTT Sparkplug B Client driver is available in this release.
Digital Twins: Removed the 2,000-item limit on the number of dynamic attributes that can be created on a single model. This allows for models that require a higher limit. Added $EDGE_DT_MODEL_ID and $EDGE_DT_INSTANCE_ID as available system variables for use in Digital Twins model and instance configuration. This supports tracking and analysis of Digital Twins data in external systems.

Resolved Issues

Description
DeviceHub: Fixed issue where the IEC102, Mitsubishi FX, Siemens TI505, and Fanuc drivers accepted certain multi-character address suffixes that produced incorrect register addressing. These suffixes are no longer supported. Fixed issue where the Beckhoff TwinCAT3 Ethernet Absolute (Gen1.3) and Beckhoff TwinCAT3 Ethernet Symbolic (Gen1.3) drivers returned a timestamp of 0 for failed tag reads. Tags now publish the current timestamp in this case

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