Ebyte M31 Series offers a comprehensive line of industrial-grade distributed remote I/O host and expansion modules that support Modbus TCP aM31-XXAX0080Gnd Modbus RTU protocols over RJ45 and RS485 interfaces, providing a highly scalable and flexible solution for automated data acquisition and control systems.
| Model | Module Type | Communication Interfaces | Digital Input (DI) | Digital Output (DO) | Analog Input (AI) | Analog Output (AO) | Price (USD) |
|---|---|---|---|---|---|---|---|
| M31-XXXA0008G | Host Module | RJ45 + RS485 | 0 | 0 | 0 | 8 | $39.99 |
| M31-XGXX0800G | Host Module | RJ45 + RS485 | 0 | 0 | 8 | 0 | $44.99 |
| M31-XFXX0800G | Host Module | RJ45 + RS485 | 0 | 0 | 8 | 0 | $44.99 |
| M31-AAAX4440G | Host Module | RJ45 + RS485 | 4 | 4 | 4 | 0 | $37.99 |
| M31-XXAX0080G | Host Module | RJ45 + RS485 | 0 | 0 | 8 | 0 | $33.99 |
| M31-AXXX8000G | Host Module | RJ45 + RS485 | 8 | 0 | 0 | 0 | $32.81 |
| M31-AXAX8080G | Host Module | RJ45 + RS485 | 8 | 0 | 8 | 0 | $37.99 |
| M31-AXAX4040G | Host Module | RJ45 + RS485 | 4 | 0 | 4 | 0 | $34.89 |
| M31-XAXA0404G | Host Module | RJ45 + RS485 | 0 | 4 | 0 | 4 | $39.99 |
| M31-XAXX0800G | Host Module | RJ45 + RS485 | 0 | 8 | 0 | 0 | $34.89 |
| M31-XXAX00A0G | Host Module | RJ45 + RS485 | 0 | 0 | 10 | 0 | $42.69 |
| M31-AXXXA000G | Host Module | RJ45 + RS485 | 10 | 0 | 0 | 0 | $35.36 |
| M31-GAAAX4440 | Expansion Module | RS485 | 4 | 4 | 4 | 0 | $20.75 |
| M31-GAXXX8000 | Expansion Module | RS485 | 8 | 0 | 0 | 0 | $19.89 |
| M31-GXXAX0080 | Expansion Module | RS485 | 0 | 0 | 8 | 0 | $20.75 |
| M31-GAXAX4040 | Expansion Module | RS485 | 4 | 0 | 4 | 0 | $20.75 |
| M31-GAXXXA000 | Expansion Module | RS485 | 10 | 0 | 0 | 0 | $20.75 |
| M31-GXXAX00A0 | Expansion Module | RS485 | 0 | 0 | 10 | 0 | $25.99 |
| M31-GAXAX8080 | Expansion Module | RS485 | 8 | 0 | 8 | 0 | $21.99 |
| M31-GXAXX0800 | Expansion Module | RS485 | 0 | 8 | 0 | 0 | $21.75 |
| M31-GXXXA0008 | Expansion Module | RS485 | 0 | 0 | 0 | 8 | $23.65 |
| M31-GXAXA0404 | Expansion Module | RS485 | 0 | 4 | 0 | 4 | $23.65 |
| M31-GXFXX0800 | Expansion Module | RS485 | 0 | 0 | 8 | 0 | $28.65 |
| M31-GXGXX0800 | Expansion Module | RS485 | 0 | 0 | 8 | 0 | $28.65 |
Practical Application Scenarios
1. Automated Factory Data Acquisition
The M31 series acts as the primary bridge between analog sensors (such as pressure, temperature, and flow meters) and industrial PLCs or SCADA systems. By converting local sensor signals into standard Modbus TCP packets over Ethernet, it enables facility-wide data transparency, allowing operators to monitor equipment health in real-time across decentralized production lines.
2. Intelligent Building Energy Management
Building management systems utilize M31 I/O modules to integrate HVAC, lighting, and power meters into a unified network. With the support for both RS485 and RJ45, these modules facilitate the aggregation of energy usage data from multiple floors into a central server, enabling fine-grained control and optimization of building operational costs.
3. Remote Infrastructure Monitoring (Smart Water/Gas)
In remote monitoring stations for water distribution or gas networks, the M31 series provides a scalable way to monitor critical infrastructure status. Its support for Modbus RTU ensures compatibility with legacy serial-based field equipment, while the Ethernet interface provides the necessary throughput for high-frequency status updates to regional control centers.
FAQ Section
1. Does the M31 series support concurrent Modbus TCP and RTU operation?
Yes, the M31 series is engineered to support both protocols, allowing users to leverage the speed and ubiquity of Modbus TCP for centralized server communication while maintaining compatibility with serial-based Modbus RTU field devices via the integrated RS485 interface.
2. How does the host module handle network failure or communication interruption?
The M31 series includes built-in safeguards and robust communication timeouts. In the event of a network loss, the module can be configured to enter a safe state (Fail-Safe), ensuring that critical outputs remain in a pre-defined condition to protect physical assets.
3. Can I mix different I/O expansion modules on the same network?
Absolutely. The M31 architecture is designed for high scalability. You can daisy-chain or network multiple host and expansion modules according to your specific I/O requirements, creating a fully customized data acquisition network that grows alongside your industrial application.
