RS485 Analog Output Module
8-channel 0-10V analog output module over Modbus RTU. 12-bit resolution for EC fan speed and inverter control.
RS485 Analog Output Module
Our 8-channel analog output module delivers 0-10V voltage signals with 12-bit resolution and ±1‰ accuracy, controlled over RS-485 via the standard Modbus RTU protocol (read-back supported for status verification). It is designed for EC motor speed control — 0V stops the fan, 10V is full speed — as well as inverter and process control applications. Outputs default to 0V at power-on for a safe stop, and each channel is set or read individually or in a batch. Address (1-32) and baud rate are configurable and saved through power cycles.
Key Features
- 8 analog output channels, 0-10V voltage output
- 12-bit resolution (1mV) with ±1‰ accuracy
- Standard Modbus RTU with read-back for status verification
- Direct EC motor speed control (0V = stop, 10V = full speed)
- Power-on safe state: all outputs start at 0V
- DIN-rail mounting, DC 6-30V supply, -40°C to +85°C
Technical Specifications
| Channels | 8 analog outputs (AO+ / AO-) |
| Output Range | 0-10V |
| Resolution | 12-bit (1mV) |
| Accuracy | ±1‰ |
| Protocol | Modbus RTU |
| Address Range | 1~32 (power-off save) |
| Baud Rate | 4800~115200bps (8N1) |
| Power Supply | DC 6~30V, ≈0.1A |
| Power-on State | All outputs 0V (safe stop) |
| Working Temperature | -40°C ~ +85°C, 0~85%RH |
| Mounting | DIN rail (35mm) or screw |
Applications
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