Novatek-Electro EM-486
The EM-486 is a MODBUS RTU/ASCII (RS-485) protocol converter manufactured by NOVATEK-ELECTRO LTD.
EM-486 provides data collection from connected devices (analog sensors and MODBUS devices), data transfer to the server, access to data (via MODBUS TCP protocol or SMS text messages), event tracking and response (relay control, SMS sending - notifications, writing values to MODBUS devices, saving read values to the log).
Key Features
Section titled “Key Features”- Flexible connection options (Ethernet, GSM/GPRS, automatic method selection for communicating with server)
- Access protection (passwords for configuration or for connection to the MODBUS network, SMS control password)
- Different modes of data interchange via RS-485 (RTU or ASCII, parity checking, wide range of transmission rates, adjustable delay)
- Programming of data collection, events, and actions via task files
- Programmable relay outputs (K1, K2, K3) for reaction at events and alarms
- Programmable analog inputs for sensors
- Programmable impulse meters for every sensor
- Power output for sensors
- Reserve power supply input
- Real time clock with NTP synchronization
- SD card support for data logging and task file storage
- Graphical OLED display for status indication
- Remote firmware update capability
Common Use Cases
Section titled “Common Use Cases”- Remote data acquisition and monitoring via cellular networks
- Industrial automation with event-driven responses
- SMS-based alerting and equipment control
- Data logging and archival with local storage
- Multi-site monitoring with Overvis cloud integration
Documentation
Section titled “Documentation”- Operating Manual – Complete operating instructions, installation, and configuration
Technical Reference
Section titled “Technical Reference”- Appendix A: Versions and Modifications – Product versions and hardware modifications
- Appendix B: Connection Diagrams – Wiring and connection diagrams
- Appendix C: Task Files – Task file programming reference
- Appendix D: MODBUS Registers – Complete register reference
- Appendix E: Memory Card – SD card usage and file formats
- Appendix F: Web Interfaces – HTTP API reference
- Appendix G: Firmware Update – Firmware update procedures
Examples
Section titled “Examples”- Task Examples – Sample task file configurations
Resources
Section titled “Resources”- EM-486 Product Page – Full product information and specifications
- One-Page Documentation – Complete documentation on a single page for printing
- EM-486 Full Manual (PDF) – Complete operating manual
Support
Section titled “Support”- Knowledge Base: Browse this documentation for detailed guides and references
- Support Center: Visit our Support Center for FAQs and troubleshooting
- Report an Issue: Submit a support ticket for technical assistance