verified connector library

Delta AC MAX/UFC/SLIM EV chargers (EVCS Modbus)

Register map(s) for this device, each at the trust rung it earned. Addresses are 0-based as on the wire; word order and scaling are only confirmed at the hardware-verified rung.

interop-verified

Read + decoded cleanly over a real network vs an independent third-party Modbus test server (transport and framing; reads are remapped into the server's register window, so the map's own addresses are NOT exercised). Does NOT prove word order/scaling against the actual device.

pointaddress (0-based)typescaleunit
ev_charger_state100U161
ev_charger_version101U161
evse_count102U161
slave_id200U161
communication_timeout_enable201U161
communication_timeout202U161s
fallback_power203U32BE1W
evse_state0U161
evse_charge_state1U161
evse_voltage3F32BE1V
evse_charging_power5U32BE1W
evse_current7F32BE1A
evse_power9F32BE1W
evse_soc11U160.1%
evse_max_charging_power13U32BE1W
evse_min_charging_power15U32BE1W
evse_charging_time17F32BE1s
evse_charged_energy19F32BE1Wh
evse_discharged_energy21F32BE1Wh
evse_v2x_potential_total_power23F32BE1W
evse_v2x_potential_power_ph125F32BE1W
evse_v2x_potential_power_ph227F32BE1W
evse_v2x_potential_power_ph329F32BE1W
evse_max_charging_power_ac31F32BE1W
evse_max_charging_power_ph133F32BE1W
evse_max_charging_power_ph235F32BE1W
evse_max_charging_power_ph337F32BE1W
evse_min_charging_power_ac39F32BE1W
evse_min_charging_power_ph141F32BE1W
evse_min_charging_power_ph243F32BE1W
evse_min_charging_power_ph345F32BE1W
evse_current_power_consumption_total47F32BE1W
evse_current_power_consumption_l149F32BE1W
evse_current_power_consumption_l251F32BE1W
evse_current_power_consumption_l353F32BE1W
evse_total_battery_capacity59F32BE1Wh
evse_remaining_battery_capacity61F32BE1Wh
evse_minimal_battery_capacity63F32BE1Wh
evse_bulk_charge_capacity65F32BE1Wh
evse_total_current67F32BE1A
evse_l1_current69F32BE1A
evse_l2_current71F32BE1A
evse_l3_current73F32BE1A
evse_iso62196_state75U161
evse_charging_power_limit600U32BE1W
evse_suspend_charging602U161

link settings as documented (unverified): RTU/TCP; default 115200 8N1; unit ID 1; FC 04,16; Modbus TCP default port is 502 on ACMAX and 5020 on UFC/SLIM. Modbus RTU default settings are 8N1, 115200 kBit/s for AC MAX Basic, and 19200 kBit/s for Delta AC Mini Plus / Delta DC Wallbox 25 kW via ModBus to OCPP Protocol Converter.

bench facts as documented (unverified)
connectorRS485
wiring notesRS485 interface for Modbus RTU, Ethernet for Modbus TCP
model register130
serial register110
firmware register101
doc revision1.1 (working)

generated by gemini:gemini-3.5-flash · harvested from https://hardware.taphome.com/user/related_files/evcs_modbus_register_table_v1.pdf (Delta Electronics); manual-faithful — the document's claims, panel risk: ELEVATED — panel is not confident; proved interop-verified on 2026-06-10 · recorded 2026-06-10

The trust ladder

Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.

Have a device that isn't here? Upload its register map — generation is free, and the connector earns its rung by being proven, not claimed.

Need it proven on your own device? Hardware verification — if it doesn't verify, you don't pay.

Building a platform? License the verified library — machine-readable maps, firmware matrix, API access.