Smart motor control for roller blinds and shutters
The EMDO701 Relay16 is a compact 8-channel relay controller for motorized roller blinds and shutters. Designed for residential and commercial building automation, it integrates seamlessly with existing Modbus RTU networks, PLCs, and smart home platforms.
Key Features
- 8 independent channels — control up to 8 blind motors from a single unit
- Precise position control — absolute and relative positioning (0–100%)
- Built-in motor protection — configurable overcurrent and undercurrent thresholds with automatic endstop detection
- Automatic commissioning — one-button autosetup detects connected motors and learns travel times
- Scheduled operation — 8 programmable time-of-day triggers with weekday filtering for automated scenes
- Scene management — store and recall up to 8 scenes for multi-channel presets
- Group control — assign channels to groups for synchronized operation
- Non-volatile storage — state and configuration survive power loss
- Temperature monitoring — on-board sensor with lifetime statistics
- Industry-standard communication — Modbus RTU over RS-485, configurable via DIP switch or software
Why this device?
- Replaces up to 8 individual actuators
- No wireless problems
- Reliable RS-485 communication
- Clean DIN rail installation
- Built-in current measurement and fault detection
Integration
- WAGO PFC100 / PFC200 / CC100 — Modbus RTU slave via e!COCKPIT (CODESYS 3.5), full register map with structured text examples
- Home Assistant — custom integration via HACS with cover entities, position control, and autosetup support
- Any Modbus RTU master — standard protocol, no proprietary software required
Communication Defaults (DIP switch, all ON)
| Parameter | Default |
|---|---|
| Baud rate | 19200 |
| Data bits | 8 |
| Parity | None |
| Stop bits | 1 |
| Slave address | 1 |
All parameters can also be changed via Modbus registers (persisted across power cycles).
Applications
- Residential smart homes
- Office and commercial buildings
- Hotel room automation
- Retrofit building automation projects
Quick Start
- Wire RS-485: A→A, B→B, connect 230V AC
- Configure your master: Modbus RTU, 19200 / 8N1, slave ID 1
- Test: write register 0 = 2 (blind moves up), register 0 = 1 (moves down)
Done!
Interested or have questions about the EMDO701? We’re happy to help — from evaluation to integration.