Top-tier Modbus and HART communication hardware for global industrial standards.
In the era of Industrial Internet of Things (IIoT), the bridge between legacy serial communication (RS485/RS232) and modern Ethernet networking (TCP/IP) has become the backbone of smart manufacturing. As leading China TCP RS485 manufacturers, we recognize that the demand for "Information Gain"—the ability to derive more actionable data from existing field instruments—is the primary driver for technological adoption in 2024 and beyond.
RS485 remains the workhorse of the factory floor due to its robustness against electrical noise and long-distance capabilities. However, the isolation of these data silos is no longer acceptable. The transition to Modbus TCP allows for seamless integration with SCADA systems, ERP platforms, and cloud analytics, enabling real-time monitoring and predictive maintenance that was previously impossible.
Enterprises in Europe, North America, and Southeast Asia are increasingly sourcing TCP RS485 solutions from China to balance high-spec technical requirements with cost-efficiency. The focus has shifted from "simple hardware" to "secure, interoperable gateways."
From decentralized solar farms requiring remote RS485-to-Ethernet telemetry to massive chemical plants integrating HART protocols into Modbus networks, our solutions address the complexity of modern industrial architecture.
Our R&D is currently focused on 5G-enabled data collectors, TSN (Time-Sensitive Networking) compatibility for TCP gateways, and enhanced cybersecurity layers for edge communication devices.
SONGMAO Electronic co., Ltd. (Jiaxing Songmao Electronics Co., Ltd.) was established in 2007. It has always been driven by technological innovation, deeply engaged in the field of industrial automation, and gradually developed into a high-tech enterprise integrating R&D, production and sales.
The company focuses on the independent research and development of core technologies such as HART protocol communication products and data collectors. Through continuous technological breakthroughs and market expansion, it has established a leading position in the industry.
Proven reliability in the world's most demanding environments.
Technological Maturity: Over the last decade, China has become the global hub for industrial electronics. Songmao, with its 18-year legacy, represents the pinnacle of this growth, offering products that meet CE, RoHS, and ISO standards. Our expertise in HART (Highway Addressable Remote Transducer) protocol integration is a testament to our technical depth.
Supply Chain Resilience: Localized manufacturing in Jiaxing allows us to maintain a consistent supply of core chipsets and components, mitigating the risks of global logistics disruptions. This ensures that our "Suppliers & Factory" status translates to shorter lead times for our international clients.
Localization & Compliance: We provide full documentation for international compliance. Whether you are integrating a Modbus TCP network in Germany or a data collection system in Brazil, our hardware is designed for global interoperability, supporting multiple languages and regional voltage standards.
Information Gain Advantage: Our converters do not just "pass data." They offer advanced filtering, packet prioritization, and status diagnostics. This provides engineers with Information Gain—meaning they get cleaner data and faster diagnostics, reducing downtime and operational costs.
To bridge these protocols, you need a Modbus Gateway (like our SM700-T series). It converts the Ethernet TCP packets into serial RTU frames. Configuration usually involves setting the IP address, Port (default 502), and matching the Baud rate/Parity of the RS485 side.
High-density collectors like the SM100-M16 allow for the simultaneous acquisition of digital data from 16 different HART instruments over a single Modbus TCP link. This drastically reduces wiring costs and simplifies the network architecture.
Yes. RTU is a serial protocol (RS485/232) using binary encoding and CRC for error checking. TCP is an Ethernet protocol that wraps Modbus frames in TCP/IP headers, allowing for faster speeds, longer distances, and multiple master access.
Absolutely. Models like the SM626H-A are designed specifically for remote data collection where wired Ethernet is unavailable, utilizing All-Netcom 4G modules to push Modbus data to central servers.
