In the era of Industry 4.0, the demand for seamless data transmission between field devices and cloud platforms has skyrocketed. Ethernet gateways act as the critical bridge, translating legacy protocols like 4-20mA, HART, and RS485 into Modern Modbus TCP/IP and Ethernet structures.
Modern "China Ethernet Gateway Factories" are no longer just assembly lines; they are centers of innovation focusing on semantic interoperability. By ensuring that data from a HART-enabled pressure transmitter is perfectly understood by a high-level SCADA system, these gateways eliminate "data silos."
Our manufacturing process adheres to strict quality controls, reflecting nearly two decades of Experience, Expertise, Authoritativeness, and Trustworthiness. Every converter, from SM100-B to the 32-channel SM100-M, is stress-tested for industrial environments.
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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.
Remote monitoring of HART flowmeters and pressure transmitters via Modbus TCP converters. Real-time data acquisition ensures pipeline safety and leak detection.
Optimizing heat exchange stations using multi-channel RS485 distributors to manage complex sensor networks efficiently.
Integrating 4-20mA multivariable converters to monitor water quality parameters (pH, turbidity) across sprawling municipal networks.
In the competitive landscape of "Ethernet Gateway Factory" options, the advantage of Chinese manufacturing lies in the synergy of supply chain depth and rapid R&D iteration. Unlike traditional western manufacturers who may have long lead times and high costs, a China-based factory like Songmao offers:
As we move toward 2026, the industrial gateway is evolving. We are seeing a move toward Edge Computing where the gateway doesn't just pass data—it processes it. This reduces latency and bandwidth usage, a key requirement for the "Environmental Protection" and "Natural Gas" sectors.
Our commitment to excellence is backed by rigorous testing and international certifications.
A HART Modem (like our SM100-C) is primarily used for point-to-point configuration of instruments via a PC, while a HART Gateway (like the SM100-M series) is designed for continuous data acquisition, converting HART variables into Modbus RTU or TCP for integration into SCADA/PLC systems.
Songmao offers solutions ranging from single-channel converters to high-density 32-channel HART data collectors (SM100-M-32), allowing for efficient management of large-scale instrument clusters.
Yes, while basic Modbus TCP lacks inherent encryption, our industrial-grade gateways can be integrated with secure routers or utilize specific firmware enhancements to ensure data integrity across your plant's Ethernet network.
Yes, the SM626H-A-0 is specifically designed for this purpose, providing multivariable conversion from traditional 4-20mA loops to digital Modbus-RTU signals.
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