--- title: "Universal Modbus" description: "Universal Modbus is a Marketplace integration for Home Assistant. It has 52 installs sharing analytics, works locally and was last updated October 24, 2026." canonical: "https://vulpo.app/integrations/marketplace/idelmaeaen-ha-universal-modbus" url: "https://vulpo.app/integrations/marketplace/idelmaeaen-ha-universal-modbus.md" last-updated: "2026-11-08" version: "1.4" --- # Universal Modbus > Universal Modbus is a Marketplace integration for Home Assistant. It has 52 installs sharing analytics, works locally and was last updated October 24, 2026. Universal Modbus is a custom integration that connects Home Assistant to Modbus TCP devices over the local network. Connections and entities are configured in the Home Assistant UI, with no YAML needed. It reads coils, discrete inputs, holding registers and input registers, and writes coils and holding registers. Values become sensors, binary sensors, switches, buttons, numbers and selects, with scaling, offsets, byte order, word order and optional read and write formulas. A sidebar editor manages several hubs, lets entities be added, edited or duplicated, and shows connection status, response time and communication errors. Hub configurations can be exported and imported, and the export leaves out the IP address. Automatic summary of the README and code of Idelmaeaen/HA-Universal-Modbus. Something wrong, or are you the maintainer and want your own text here? [Get in touch](https://vulpo.app/support) [Open in My Home Assistant](https://my.home-assistant.io/redirect/marketplace_repository/?owner=Idelmaeaen&repository=HA-Universal-Modbus&category=integration) On Home Assistant 2026.10 or older? [Open it in HACS](https://my.home-assistant.io/redirect/hacs_repository/?owner=Idelmaeaen&repository=HA-Universal-Modbus&category=integration) ## Supports - **Works locally**: Talks to your devices on your own network. No vendor cloud in between. - **From the Marketplace**: Installed through the Marketplace, formerly HACS. - **Actively maintained**: Its author released or pushed a change in the last six months. ## Setting it up Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services. ### Add Modbus TCP device - **Device name** - **Host** - **Port** - **Unit ID** - **Scan interval** - **Timeout** ### After setup - **Profile name** - **Manufacturer** - **Model** - **Description** - **Hub byte order** - **Hub word order** - **Name** - **Entity type** - **Register area** - **Data type** - **Register count** - **Scale** - **Offset** - **Advanced calculation** - **Read formula** - **Write formula** - **Unit** - **Icon** - **Displayed decimal places** - **Device class** - **State class** - **Name** - **Entity type** - **Register area** - **Data type** - **Register count** - **Scale** - **Offset** - **Advanced calculation** - **Read formula** - **Write formula** - **Unit** - **Icon** - **Displayed decimal places** - **Device class** - **State class** - **Entity** - **Name** - **Entity type** - **Register area** - **Data type** - **Register count** - **Scale** - **Offset** - **Advanced calculation** - **Read formula** - **Write formula** - **Unit** - **Icon** - **Displayed decimal places** - **Device class** - **State class** - **Name** - **Entity type** - **Register area** - **Data type** - **Register count** - **Scale** - **Offset** - **Advanced calculation** - **Read formula** - **Write formula** - **Unit** - **Icon** - **Displayed decimal places** - **Device class** - **State class** - **Entity** - **Confirm deletion** Texts from the code of [Idelmaeaen/HA-Universal-Modbus](https://github.com/Idelmaeaen/HA-Universal-Modbus). ## Entities - **Sensors**: Response time, Communication errors, Last successful update ## From the README > Universal Modbus is a custom Home Assistant integration for Modbus TCP devices. Connections and entities are configured through the Home Assistant UI; no YAML configuration is required. > > Universal Modbus is developed and maintained by Edelmann Electronics. > > - Create and manage multiple Modbus TCP hubs in the sidebar > - Read coils, discrete inputs, holding registers, and input registers > - Write coils and holding registers > - Create sensor, binary\_sensor, switch, button, number, and select entities, including pulsed ToggleSwitch entities > - Decode bool, int16, uint16, int32, uint32, int64, uint64, and float32 values > - Configure scaling, offsets, byte order, and word order > - Use safe per-entity read and write formulas for advanced calculations > - Use a separate feedback register for writable entities > - Display and control entity values directly in the sidebar > - Import and export a complete hub > - English and German UI translations From the README of [Idelmaeaen/HA-Universal-Modbus](https://github.com/Idelmaeaen/HA-Universal-Modbus#readme), [MIT License](https://spdx.org/licenses/MIT.html). Shortened. ## At a glance - Kind: Marketplace integration - Category: [Hubs and protocols](https://vulpo.app/integrations/category/hubs-and-protocols.md), Building automation - Number: 52 installs sharing analytics; 10 GitHub stars - Connection: Works locally - Upkeep: Updated in the last 6 months - Needs: Needs the Marketplace (HACS on 2026.10 and older) - Latest version: v1.3.2, last updated October 24, 2026 - Domain: `universal_modbus` - Source: - Issues: - Screenshot: https://vulpo.app/integrations-img/461037797e499b5f.webp (from Idelmaeaen/HA-Universal-Modbus's README) - Screenshot: https://vulpo.app/integrations-img/6312b5d37b2482cb.webp (from Idelmaeaen/HA-Universal-Modbus's README) - Screenshot: https://vulpo.app/integrations-img/35b52200ee9bfc47.webp (from Idelmaeaen/HA-Universal-Modbus's README) In Vulpo: Quick Toggle card, Button card, Select card, Chart card, Apple Watch, Control Center Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about) Last updated 2026-11-08. Source: https://vulpo.app/integrations/marketplace/idelmaeaen-ha-universal-modbus --- - HTML version of this page: https://vulpo.app/integrations/marketplace/idelmaeaen-ha-universal-modbus - Site index for agents: https://vulpo.app/llms.txt - Everything in one document: https://vulpo.app/llms-full.txt - All pages: https://vulpo.app/sitemap.xml