Growatt Modbus

Summary Expose the remaining battery settings confirmed on a Growatt MIN 4600TL-XH (DTC 5100) after Growatt upgraded its firmware from ALBA130101 to ALBA18010122: - Discharge Power Rate, holding register 3066, 0–100% - On-Grid Discharge Stop SOC, existing register 3067, clearer MIN-specific display name - Off-Grid Discharge Stop SOC, VPP V2.01 register 30475, 10–100% ## Hardware evidence On the updated inverter, direct local reads returned: - 3066 = 0, matching ShinePhone “Discharge Power” - 3067 = 20, matching “On-grid discharge stop SOC” - 30475 = 16, while ShinePhone still showed 10 …

Excerpt saved from GitHub on 2026-10-23.

Summary - add a disabled-by-default `Wake APX Battery` button for `MIN_TL_XH_3000_10000_V201` - use the VPP 2.01 value accepted by this firmware (`30410 = 1`) instead of the VPP 2.03-only value `2` - briefly deselect and then restore an already-active VPP direct branch instead of refusing the wake request - keep the pulse bounded to 5% for one minute / 12 seconds and restore authority, selector and parameters in a safe order ## Hardware validation Tested on a Growatt MIN 4600TL-XH, DTC 5100, APX S0. - baseline: `30100 = 1`, `30407..30410 = [1, 0, 65436, 1]` - writing `30410 = 2` read back as …

Excerpt saved from GitHub on 2026-10-23.

Same inverter and symptom here (SPH 3600TL BL-UP), and I can confirm your hypothesis #1, the firmware requires an atomic multi-register (FC16) write for a TOU period's time window, with a reproducible test, plus narrow down *which* writes are affected and rule out the cloud-override and EEPROM-dropout theories. Setup: SPH 3600TL BL-UP, profile `sph_3000_6000_v201` (DTC 30000 = 3502, protocol 30099 = 201), ShineWiLan-X2 datalogger (fw 7.6.1.3, TCP 502), integration `0.9.8`. On V2.01 the AC-charge periods are `[start, end, enable]` triples at holding 1100-1102 / 1103-1105 / 1106-1108 …

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1. Integration Version `0.9.3` ## 2. Inverter Model and Profile - Inverter model: WIT 15000TL3-HU (WIT 15K) - Profile selected: WIT (4-15kW) - Phase: Three-phase - Battery: Yes, 2× LiFePO4 16S packs, JK BMS (~32 kWh total) ## 3. Connection Type - TCP via serial-to-TCP adapter - Adapter model: Elfin EW11 (RS485 → WiFi/TCP), firmware 1.44.1 - ShineWiFi dongle physically disconnected; cloud remote control disabled ## 4. What Happened vs. What You Expected What I was doing: Running normal scheduled automations that write to the VPP control registers (30100 / 30407 / 30408 / 30409), e.g. …

Excerpt saved from GitHub on 2026-10-23.

49 - Main changes are in wit.py - mapped some missing basic sensors by checking against real hardware, so all the useful basic sensors are available and working; - added handling of two more ranges to growatt_modbus.py (has_875_range and has_8000_range); - Added missing string & translation for WIT inverters; - Added 8000-8124 range scanning to diagnostic.py.

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… code. The check then treated that zero as if it were a device type code, failed to find it, and announced your model as unsupported. For the record, the MIN 5000TL-XH is supported and its code is known: DTC 5100, confirmed on

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… moment, but I did a read from the portal: AI reported result: # Shine inverter on/off read capture Date: 2026-09-27 Evidence status: `PROVEN_LIVE` Hardware: Growatt MIN 6000TL-XH, current firmware profile `ALBA18010122`, ShineWiLan-X2 firmware `7.6.2.5` Transport: PiITM `cache+shine-predictive`, Shine JSONL stream on TCP port 5700 ## Scope The Growatt portal was used to read the single Set Inverter On/Off setting. The purpose was to determine whether Shine requests one register

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Closes #313 Assisted-by: gemini-cli using Gemini 2.5

Excerpt saved from GitHub on 2026-10-23.