Novatek-Electro EM-483

EM-483 Protocol Converter

The EM-483 is a microprocessor protocol converter manufactured by NOVATEK-ELECTRO LTD. It provides data exchange over 10BASE-T and 100BASE-T Ethernet networks with equipment supplied with an RS-485 interface.

The EM-483 provides MODBUS server functions to connect MODBUS clients over an Ethernet network. The product redirects MODBUS requests from clients to devices on the MODBUS network and returns responses from the devices to the clients.

EM-483 can also be used in tunnel mode for direct data transmission between clients and RS-485 devices using protocols other than MODBUS.

Key Features

Flexible Ethernet addressing (MAC address override, static or dynamic IP address)
Protection of access via the Ethernet network (configuration mode password, IP address filter)
Various modes of exchange over the MODBUS network (RTU or ASCII, parity checking, wide range of transmission rates)
Support for up to 5 remote MODBUS TCP servers
Tunnel mode for non-MODBUS protocols
Remote firmware update capability

Common Use Cases

Connecting RS-485 MODBUS devices to Ethernet networks
Industrial protocol conversion for SCADA systems
Building automation system integration
Remote monitoring via Ethernet connectivity

Documentation

Operating Manual – Complete operating instructions, installation, and configuration

Technical Reference

Appendix A: Server Connection – Connecting to Overvis and other servers
Appendix B: Web Interfaces – HTTP API reference
Appendix C: MODBUS Registers – Complete register reference for programmatic access

Resources

EM-483 Product Page – Full product information and specifications
One-Page Documentation – Complete documentation on a single page for printing
EM-483 Full Manual (PDF) – Complete operating manual

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