Webasto Unite

Status: Vendor Confirmed · Register points: 36 · Transports: Modbus TCP

A curated ModDef profile for the Webasto Unite. Import it as webasto.unite or load the .moddef.yaml directly.

Connect to one over Modbus TCP and watch its values live in the device dashboard.

Usage

Load the profile, bind a transport, and read a point by name. The runtime applies the offset, scaling, byte order, and sentinels from the definition.

Go

doc, _ := moddef.Load("webasto-unite.moddef.yaml")
dev, _ := client.New(doc, "webasto-unite", transport) // your modbus.Transport
v, _ := dev.ReadPoint(ctx, "evse_fault_code")
fmt.Println(v)

TypeScript

import {Device} from '@moddef/core';
import {loadDocument} from '@moddef/core/node';

const doc = await loadDocument('webasto-unite.moddef.yaml');
const dev = Device.create(doc, 'webasto-unite', transport);
console.log(await dev.readPoint('evse_fault_code'));

Rust

let doc = moddef_core::load("webasto-unite.moddef.yaml")?;
let mut dev = Device::new(&doc, Some("webasto-unite"), transport)?;
let v = dev.read_point("evse_fault_code").await?;

Python

from moddef import Device, load
from moddef.pymodbus import Options, PymodbusTransport

doc = load("webasto-unite.moddef.yaml")
transport = await PymodbusTransport.tcp("192.168.1.50", options=Options())
dev = Device.create(doc, "webasto-unite", transport)
print(await dev.read_point("evse_fault_code"))

C

md_doc_t doc;
md_doc_init(&doc, flash_ptr, flash_len);        /* zero-copy view */

md_dev_t dev;
md_dev_init(&dev, &doc, MD_STR("webasto-unite"), &transport);

md_value_t v;
md_dev_read(&dev, MD_STR("evse_fault_code"), &v);

C++

auto doc = moddef::Document::view(flash_bytes).value();   // zero-copy over flash
auto dev = moddef::Device::open(doc, "webasto-unite", transport).value();

if (auto v = dev->read("evse_fault_code"); v)
    std::cout << v->to_string() << '\n';

Measurands

The 5 semantic quantities this device reports, each linked to the measurand catalog. Query a device by measurand instead of a raw point when you want portable code.

Base quantity	Name	Unit	Description
current	Current	A	RMS current; qualify with phase_ref / direction
voltage	Voltage	V	RMS voltage; qualify with phase_ref (L1_N, L1_L2, ...)
active_power	Active Power	W	Instantaneous real power
energy_active	Active Energy	Wh	Cumulative active energy register
fault_code	Fault Code	undefined	Vendor fault code (enum or integer)

Source

• Profile: ev-charger/webasto-unite/webasto-unite.moddef.yaml
• Register map: vendor documentation