● Field Notes
One gateway. Every protocol.
Comparisons, architecture, and protocol deep-dives on unifying Modbus, OPC UA, EtherNet/IP, Siemens S7, DNP3, and BACnet/IP behind a single typed gRPC API.
Latest articles
Guide
Modbus, OPC UA & EtherNet/IP in One Binary: Unifying Six Protocols
How one Rust binary drives Modbus TCP, OPC UA, EtherNet/IP (CIP), Siemens S7, DNP3, and BACnet/IP behind a single API. The mt-* engines, read/write/subscribe parity, and why protocol bugs get fixed once.
August 9, 2026
Guide
One Typed gRPC API for Every Industrial Protocol
Why one typed gRPC surface beats a separate client for Modbus, OPC UA, EtherNet/IP, S7, DNP3, and BACnet. Type-preserving values, server-streamed subscriptions, and a single canonical implementation.
August 9, 2026
Comparison
Voltrus Gateway vs Kepware: A Cross-Platform OPC Gateway Alternative
Kepware is the default — a Windows-only, licensed OPC server with per-tag pricing. Voltrus Gateway is a cross-platform, self-hosted Rust binary exposing one typed gRPC API across six protocols, one-time per host. An honest feature-by-feature comparison.
August 9, 2026