Home >
Converter >
Wholesale Fully Isolated HART to RS485 Converter SM101-W - China Suppliers & Factory for MODBUS-RTU Solutions Supplier, Factories
1 / 3
Wholesale Fully Isolated HART to RS485 Converter SM101-W - China Suppliers & Factory for MODBUS-RTU Solutions Supplier, Factories
Introducing the SM101-W series HART smart converter, a cutting-edge product developed in China by experienced suppliers and manufacturers. This advanced converter utilizes an ARM microprocessor and HART protocol modem chip, ensuring exceptional reliability and stability tailored to meet industrial standards. The intelligent converter features a standard RS485 interface and gateway, allowing for seamless data transmission with HART-compatible intelligent instruments. It also facilitates conversion to MODBUS RTU/MODBUS TCP protocols, enabling efficient data reading and real-time transmission. Trust in our factory’s commitment to quality and innovation for your industrial communication needs
The HART protocol utilizes the Bell202 Frequency Shift Keying (FSK) standard to superimpose a modulated digital signal on a 4 to 20 mA basis. This design allows HART protocol instruments to maintain bidirectional data communication without interfering with the 4 to 20 mA analog signal. The SM101 series intelligent converter is a high-performance solution designed to modulate and demodulate digital and analog signals in both directions seamlessly.
Key Features & Capabilities
Standard RS485 communication interface and gateway for flexible parameter configuration and baud rate adjustment.
Industrial universal module shell designed for easy installation, commissioning, and durability in harsh environments.
Supports both standard MODBUS_RTU and MODBUS_TCP protocols for broad system compatibility.
Isolated HART channels ensure that each connection remains independent without affecting current output.
High-speed data processing: 0.8 seconds update time for a single set, ensuring real-time monitoring.
Versatile installation: Supports standard DIN rail mounting or fixed bolt installation.
Technical Parameters
Power Supply
DC 12 ~ 24 V (Ripple ≤ 200 mA, Current 100mA)
Shell Dimensions
75 mm × 80 mm × 41 mm
Operating Temp
-20 ℃ ~ + 80 ℃
Relative Humidity
10% ~ 80% (Non-condensing)
Frequently Asked Questions
What communication protocols does the SM101 series support?
The SM101 series intelligent converter fully supports standard MODBUS_RTU and MODBUS_TCP protocols, making it compatible with most industrial PLC and SCADA systems.
Does it interfere with the existing 4-20mA analog signal?
No. By using the Bell202 FSK standard, the digital signal is superimposed on the analog signal at a high frequency, ensuring zero interference with the original 4-20mA loop.
How many HART instruments can be connected at once?
The converter supports simultaneous connection of multiple HART protocol intelligent instruments. Each channel is isolated to maintain signal integrity across all connected devices.
What is the expected data refresh rate?
The data update time is approximately 0.8 seconds per instrument. For instance, if four instruments are connected, the total cycle time for a full data refresh is about 3.2 seconds.
Is special software required for configuration?
Yes, the device is equipped with dedicated configuration software that allows users to set parameters, modify baud rates, and manage communication parity bits easily.
What are the installation requirements?
The unit features an industrial-grade shell that supports both standard 35mm DIN rail installation and traditional fixed-point mounting, offering flexibility for different control cabinet layouts.
