HART to MODBUS RTU Converter SM100-B-F - Reliable China Suppliers & Factory Solution for Smart Instrument Data Transmission
Product Introduction
SM100-B-F HART smart converter is a product developed by using ARM microprocessor, HART protocol modem chip and a lot of practical experience. Designed according to the requirements of industrial products, it has high reliability and stability. The intelligent converter is equipped with a standard RS485 interface, which can transparently transmit data with intelligent instruments with HART protocol or read data with MODBUS_RTU protocol to ensure real-time data transmission.
The HART protocol uses the Bell202 Frequency Shift Keying (FSK) standard to superimpose a modulated digital signal on a 4-20 mA basis, allowing the HART protocol instrument to communicate data in both directions without interfering with the 4-20 mA analog signal. SM100-B-F intelligent converter is an intelligent converter for bidirectional modulation and demodulation of digital signals and analog signals.
Product Specifications
- Equipped with standard RS485 communication interface, it can configure parameters, change communication baud rate and parity bit, and has nothing to do with 1200 communication speed on HART bus, so as to improve the operation speed of the whole system.
- Adopt industrial general explosion-proof aluminum shell, suitable for explosion-proof area.
- It is equipped with special configuration software, which can configure the parameters of SM100-B-F intelligent converter, and can communicate with HART protocol intelligent instrument through the intelligent converter.
- Support the connection of a single HART protocol intelligent instrument.
- Support a variety of special HART protocol intelligent instruments, and can read the special HART protocol commands of HART instruments.
Product Features
- Shell size: length 96 mm × width 80 mm × height 25 mm.
- Working temperature: -20 ℃ ~ + 80 ℃.
- Relative humidity: 10% ~ 80%.
- Power supply input voltage: DC 12 ~ 24V, the ripple of the power supply shall not be greater than 200 mA, and the power supply shall provide 100mA.
Main Parameters
- Power supply: DC 12 ~ 24 V, the ripple of the power supply shall not be greater than 200 mV, and the current shall be 100mA.
- Working temperature: -20 ℃ ~ + 80 ℃.
- Relative humidity: 10% ~ 80%.
- Housing dimensions: 153 mm L × 125 mm W × 58 mm H.
Frequently Asked Questions
The SM100-B-F is designed to enable bidirectional data transmission between intelligent instruments using the HART protocol and systems operating on the MODBUS_RTU protocol via a standard RS485 interface.
It utilizes the Bell202 Frequency Shift Keying (FSK) standard to superimpose modulated digital signals on top of the standard 4-20 mA analog signal, allowing simultaneous communication without interference.
Yes, the converter is built with an industrial-grade, explosion-proof aluminum shell, making it highly reliable and suitable for operation in explosion-proof designated areas.
It requires a DC 12 ~ 24V input voltage. The power supply ripple must not exceed 200 mV (or 200 mA depending on configuration limits), and it should provide a current of 100mA.
Yes, it supports the connection of a single HART protocol intelligent instrument as well as various special HART protocol instruments, including reading custom HART commands.
The converter is designed for industrial environments and has a working temperature range of -20 ℃ to +80 ℃ with a relative humidity tolerance of 10% to 80%.








