Application Note

This note demonstrates integrating a Netronix MW‑R8B (or similar) RFID reader over RS485 with a Senquip device for access control or operator ID. It details serial settings, command/response framing, and checksum handling, then provides mJS code to detect tag‑present events, debounce rapid reads, and dispatch card IDs. A whitelist/blacklist pattern is shown for granting permissions and logging unauthorised attempts. Hardware guidance covers reader power supply, cable runs, and EMI mitigation near motors or inverters. The document highlights field tips: adjusting antenna sensitivity, handling duplicate scans, and switching to burst‑read mode for faster throughput. It concludes with examples that toggle relays, log shift changes, and display the active operator on the Portal—creating a lightweight badge system without a full PLC or SCADA.

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