Application Note

This application note presents practical methods for connecting external serial instruments to Senquip ORB and QUAD devices and getting reliable data into the Portal. It explains RS232 vs RS485 electrical layers, termination and biasing for multi‑drop buses, and shielding/grounding practices to minimise noise in industrial environments. Timing diagrams and examples show how to handle device boot delays, poll/response sequences, and guard times that prevent frame collisions. The note compares three power strategies—continuous, duty‑cycled (polled), and event‑driven—so you can balance responsiveness and energy budget in battery/solar deployments. Worked mJS snippets demonstrate initialisation of the serial interface, framing (fixed‑length and delimiter‑based), CRC verification, and exception handling for partial frames or timeouts. Guidance is included for when to use pure settings versus script control, how to timestamp readings consistently, and how to batch measurements for efficient transmission. By following these patterns, you can integrate legacy serial sensors and meters with minimal rework and robust field behaviour.

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