v1.0.0

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Release Notes

Optris-CT Infrared Temperature Sensor Readout software

Release: v1.0.0
Status: Stable
Target: Optris CT / CTlaser series (RS-232 / USB / RS-485)

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Highlights

This release introduces a hardened, production-ready Optris CT reader with:

• Updated burst mode frame synchronization
• Protection against malformed data and runtime failures

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Major Improvements

Burst Mode Reliability

• Robust frame synchronization**
• Automatic re-alignment after dropped or corrupted data
• Reject of malformed frames

User Interface Stability

• Clear stale-data indication

MQTT Publishing

• JSON snapshot publishing (<topic>/json)
• Optional per-field topics
• Automatic reconnect with exponential backoff
• Safe operation during broker outages
• Optional retain flag added

Error Handling & Robustness

• Serial errors are isolated and non-fatal for the program
• Bad frames are discarded
• Graceful shutdown
• Reliable operation with noisy or misconfigured sensors networks

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New Features

• Burst configuration programming via CLI (--set-burst)

• Dual operating modes:

  • Burst (passive stream)
  • Polling (request/response)

• Multiple UI modes:

  • curses (interactive)
  • plain (log-style)
  • none (headless)

• RS-485 multidrop support (--multidrop)

• Built-in plausibility checks for all measurements

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Supported Measurements

Parameter	Unit
Process temperature	°C
Actual temperature	°C
Head temperature	°C
Box temperature	°C
Emissivity	–
Transmission	–

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Breaking Changes

⚠ None

This release is fully backward compatible with:

• Existing MQTT topic structures
• Default serial settings
• Legacy polling workflows

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Known Limitations

• Burst configuration must match the sensor’s internal setup
  (use --set-burst once to synchronize)
• Curses UI requires a POSIX terminal (Linux/macOS)

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License

MIT License

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Maintainer

Björn Heller
[tec@sixtopia.net](mailto:tec attt sixtopia.net)

v0.1

Full Changelog: https://github.com/techniker/Optris-CT-tools/commits/0.1

Added polling code.