{ "manufacturer": "algodue", "model": "upm309", "device": "upm309", "category": "Altro", "protocol": "modbus", "version": "v1", "firmware": null, "verification": "IMPORTED", "isDemo": false, "source": { "title": "algodue upm309 — modbus-database (registers.json)", "url": "https://www.aggsoft.com/serial-data-logger/tutorials/modbus-data-logging/algodue-upm309.htm", "documentRef": null, "revision": null }, "generatedAt": "2026-09-21T13:29:14.726Z", "registers": [ { "address": "4096", "addressNumeric": 4096, "signal": "phase_1_n_voltage", "name": "Phase-1-N-voltage", "description": "Phase-1-N-voltage", "functionCode": 3, "datatype": "float32", "length": 2, "scale": 1, "offset": 0, "unit": "V", "access": "READ", "endianness": null, "group": null, "notes": null }, { "address": "4098", "addressNumeric": 4098, "signal": "phase_2_n_voltage", "name": "Phase-2-N-voltage", "description": "Phase-2-N-voltage", "functionCode": 3, "datatype": "float32", "length": 2, "scale": 1, "offset": 0, "unit": 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