DAM-8RO-8DI
Industrial Modbus RTU module with 8 relay outputs and RS-485 interface.
Overview
- Industrial RS-485 interface, 8 relays.
- Modbus RTU; power isolation, magnetic isolation, and TVS protection; ABS enclosure.
- Simple wiring, fast and stable communication for demanding industrial applications.
Safety
- Only qualified electricians or trained technicians may install or service this product. Follow electrical safety, leakage protection, and insulation rules.
- Disconnect power before installation, maintenance, or relay replacement.
- Do not disassemble the module while energized—risk of damage or electric shock.
- Install in a dry, cool, non-flammable environment. Improper installation may cause safety incidents.
Specifications
| Item | Details |
|---|---|
| Power | Screw terminals 6–36 V DC |
| Interface | RS-485 |
| Baud rates | 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000 |
| Default format | 115200, N, 8, 1 |
| Relays | 8 channels |
| Contact | 1 NO + 1 NC per channel |
| Contact load | ≤10 A @ 250 V AC or ≤10 A @ 30 V DC |
| Protocol | Standard Modbus RTU |
| LED | Slow blink in idle; fast blink during communication |
| Dimensions | 145 × 90 × 40 mm |
Wiring
- Connect A/B of the RS-485 bus to the module terminals (observe bus polarity and termination as required by your network).
- Supply 6–36 V DC on the power terminals.
Configuration
Before use, configure slave address, baud rate, and parity as needed (factory defaults are suitable for first bring-up). Use your preferred Modbus master (e.g. Modbus Poll) or the vendor configuration tool if supplied.
note
Keep 115200 8N1 unless you intentionally change it; mismatched serial settings will prevent communication.
Resources
Tools
Documentation
For register map, timing modes, and frame examples, see the development protocol pages in this section (English register tables are provided alongside the same file names as Chinese).