China Modbus Gateway Manufacturer & Supplier

18+ Years of Excellence in Industrial Interoperability, HART Protocol Integration, and Edge Data Acquisition for Global Industry 4.0.

Featured Modbus & HART Solutions

Engineered for Precision, Reliability, and Seamless Industrial Communication

HART to RS485 Modbus-RTU Converter (AC220V)

SM626H-A GPRS/4G Modbus Remote Data Terminal

Industrial HART to 485 Converter | 4-20mA Support

SM101-W Fully Isolated HART to RS485 Module

SM626H-DA 4-20mA to Modbus RS485 Data Acquisition

SM701-A 3-Channel RS485 Intelligent Multi-Channel Hub

8-Channel HART Data Collector to Ethernet & Modbus

16-Channel High-Density HART to Modbus Converter

White Paper: The Future of Modbus Gateways in Industrial IoT

📊 Market Evolution: Beyond Simple Translation

In the era of Industry 4.0, a Modbus gateway is no longer just a protocol translator. It is the critical "Edge Intelligence" layer that bridges legacy field devices with cloud-based SCADA and ERP systems. As a leading China Modbus Gateway Manufacturer, Songmao Electronics focuses on hardware-level isolation and multi-variable data extraction, ensuring that complex HART-based instruments can communicate seamlessly across Modbus TCP and RTU networks.

🌐 Global Procurement Strategy

International buyers are shifting focus from "lowest cost" to "total cost of ownership (TCO)." Resilience in supply chains means sourcing from manufacturers who control the R&D cycle. Our 18-year history in Jiaxing, China, provides us with a unique advantage—access to a robust local electronic component ecosystem combined with rigorous international quality standards (CE/RoHS), ensuring 24/7 reliability in hazardous environments.

China Factory 4.0: Supply Chain Resilience & Efficiency

The global industrial landscape is facing unprecedented volatility. Jiaxing Songmao Electronics Co., Ltd. addresses this through "Intelligent Manufacturing Integration." By utilizing advanced SMT lines and automated testing protocols for every HART-to-Modbus converter, we provide:

Rapid Prototyping: Customized Modbus maps for specific client sensor arrays.
Isolation Reliability: 2500V DC isolation to prevent ground loops in large-scale oil and gas installations.
Protocol Depth: Support for HART 5.0, 6.0, and 7.0, ensuring compatibility with brands like Rosemount, Endress+Hauser, and Honeywell.

Pioneering Industrial Automation Since 2007

Jiaxing Songmao Electronics Co., Ltd. was established with a singular vision: to solve the "language barrier" of industrial machinery. Specializing in HART protocol communication and high-speed data acquisition, we have grown from a local R&D lab into a global supplier serving over 40 countries.

Our facility spans 1,073㎡ of dedicated innovation space, where we bridge the gap between 4-20mA analog signals and digital intelligence.

2007Established

18+Years Experience

40+Countries Served

1073㎡R&D Space

100%Quality Control

Cross-Industry Application Scenarios

Our Modbus Gateways are the backbone of critical infrastructure worldwide.

Oil & Gas Upstream

Collecting multivariable data (pressure, temperature, flow) from remote HART wellhead transmitters and transmitting via 4G Modbus to central SCADA systems.

Smart Heating Networks

Integrating RS485 heat meters into a unified Modbus TCP network for urban energy management and leak detection.

Water Treatment

Bridging flowmeters and pH sensors across long distances using isolated RS485 hubs to prevent interference from heavy pumping machinery.

Expert Q&A: Industrial Gateway Integration

🔹 Why should I choose a HART to Modbus converter over direct analog 4-20mA?

While 4-20mA provides a basic process variable, it misses the rich diagnostic data (sensor health, secondary variables, calibration status) available via the HART protocol. Our converters extract this digital "information gain," allowing for predictive maintenance and higher process accuracy.

🔹 How do you ensure signal integrity in high-interference environments?

All Songmao gateways feature industrial-grade isolation (up to 2500V) and built-in surge protection. This prevents ground potential differences in industrial plants from damaging your PLC or DCS input cards.

🔹 Does your gateway support multi-drop HART networks?

Yes, our multi-channel data collectors can poll multiple HART devices on a single loop (multidrop mode) or provide dedicated channels for high-speed parallel data acquisition, significantly reducing polling latency.

🔹 Can these gateways connect directly to cloud platforms?

Our 4G/GPRS enabled Modbus gateways support transparent transmission and can be configured to push data to MQTT brokers or dedicated IoT cloud platforms, enabling remote monitoring from anywhere in the world.