RS485 Modbus Gateway

HashStudioz presents the RS485 Modbus Gateway – a powerful, industrial-grade solution designed to bridge legacy Modbus devices with modern cloud-based platforms. With support for RS485 Modbus RTU, secure wireless protocols, and seamless FOTA upgrades, this gateway ensures dependable communication, remote configuration, and scalable deployment in industrial automation, energy monitoring, and smart infrastructure applications.

FOTA SUPPORT

Wireless Firmware
Updates, Anytime

ZERO DOWNTIME

Update Without
Interruptions

REMOTE FIRMWARE

Control & Upgrade
from Anywhere

RS485 Modbus Gateway – Secure & Reliable Connectivity

The Industrial Modbus RS485 Gateway by HashStudioz enables seamless two-way communication between Modbus RS485 devices and the cloud. It supports Modbus RTU, TCP, HTTP, and MQTT protocols, with easy integration into major cloud platforms. Built-in SSL/TLS encryption ensures secure, reliable data transmission for industrial IoT applications.

Modbus RS485 – Seamless Industrial Communication

Modbus RS485 is a widely adopted communication protocol ideal for connecting multiple industrial devices in a reliable and cost-effective manner. Our gateway enables intelligent data exchange between controllers, sensors, and cloud applications, making it a cornerstone for modern automation systems.

Multi-Device Support: Communicates with multiple Modbus RTU slaves over a single RS-485 line.
Protocol Bridging: Converts Modbus RTU to TCP, MQTT, or HTTP for cloud integration.
Remote Access: Configure and monitor devices remotely via SMS, GPRS, or IP.
Advanced Formatting: Supports byte swapping, data scaling, and custom register mapping.
Robust I/O: Includes digital and analog inputs, 4–20mA channel, and relay output for full control.

End-to-End Alarm Communication Workflow

This workflow illustrates how alarm signals are transmitted from detection devices to end users through a secure and reliable communication network. It ensures timely alerts and effective monitoring.

Fire alarm device

Coal mine alarm device

Anti-theft alarm device

RS485

◉----------◉

(Modbus RTU)

RS485 Modbus Gateway

Management Client

Network Server

Large Screen Display

App of the
household or owner

Ready to Unlock the Power of RS485?

Whether you’re looking for industrial automation solutions or need reliable data transmission, RS485 is your go-to communication standard. Get in touch with our experts today to integrate RS485 seamlessly into your systems!

Industrial Modbus Gateway Key Features

Designed for seamless integration and reliable data communication, our Modbus Gateway offers advanced capabilities for industrial automation and remote monitoring. Below are the key highlights that make it an essential component in modern control systems:

Polls both RS-485 RTU Modbus and TCP Modbus (Multiple TCP/IP Slaves)
Byte swapping, scaling factor, and parameter datatype conversion
Event alerts: Power failure, input changes, reset, battery warnings
Modbus, I/O, and Data Logger with 4G/LAN connectivity
CSV/JSON format support for parameter packetization
Remote configuration via SMS, GPRS, or static IP server commands

Configure and read multiple slave IDs and selectable register addresses
1 x RS-485 port for Modbus RTU, 1 x TCP port for Modbus TCP, USB port for configuration
2 x Digital Inputs, 2 x Analog Channels (0–24V), 1 x 4–20mA Channel, 1 x Relay Output
Supports TCP/HTTP/MQTT/HTTPS with GET/POST methods
Transparent or inbuilt polling (ASCII/HEX/Raw HEX formats)
OTA firmware and device configuration updates

Modbus Gateway Application Areas

Meter Energy

Home Automation

Pump & Flow Control

Solar Monitoring

Temperature Alerts

Windmill & SCADA

Generator Control

Pump & Flow Control

Meter Reading

Water Level Control

Specification of Modbus RS485 IoT Gateway

General Specifications
Product Name	RS485 Modbus to 4G/LAN IoT Gateway
Model	HSZ-RS485-GW-01
Microcontroller	Dual-core Xtensa LX6, 240 MHz 4 MB Flash, 520 KB SRAM
Connectivity
Cellular	LTE Cat 1 (10 Mbps DL / 5 Mbps UL) Bands: B1/B3/B5/B8/B39/B40/B41
LAN	10Base-T Ethernet IEEE 802.3 Compliant
Serial Communication	RS485 (MODBUS RTU supported) Configurable Baud Rate (1200–115200 bps) 1× Terminal Block
Antenna Interfaces	LTE: External (U.FL) Wi-Fi: External (U.FL)
SIM Card	Nano SIM (3FF)
Protocols & Cloud
Protocols Supported	Modbus RTU (Slave/Master) MQTT over 4G/LAN
Cloud Support	MQTT (AWS, Azure IoT, ThingsBoard, Custom Brokers) REST APIs
Interfaces & Indicators
I/O Interfaces	1× RS485 (terminal block) 1× LAN (RJ45)
Indicators	Power LED Network Status LED RS485 TX/RX Activity LED
Power & Environment
Operating Voltage	9V – 24V DC (via terminal or barrel jack)
Power Consumption	<2W average
Operating Temperature	-20°C to +70°C
Humidity Range	10% to 90% RH (non-condensing)
Physical Attributes
Enclosure	ABS Plastic / Metal DIN rail mountable (optional)
Dimensions	Approx. 100 mm × 80 mm × 30 mm
Mounting Options	DIN Rail / Wall Mount
DIN Rail / Wall Mount
Firmware Update	FOTA (Firmware Over-The-Air) via 4G or LAN
Security Features	TLS/SSL Encryption Secure Boot
Certification & Customization
Certifications	CE, RoHS (optional on request)
Customization Options	Logo, UI, Protocol Extensions, Cloud Platform Mapping
Use Cases
Use	Industrial Modbus Sensor Data Collection Solar, Water, HVAC Systems Monitoring Remote PLC Access

Frequently Asked Questions

Our RS485 Modbus Gateway stands out with industrial-grade durability, multi-protocol support (Modbus RTU, TCP, MQTT), remote configurability, and secure OTA firmware updates—ideal for smart automation, energy, and industrial IoT applications.

Yes. Our gateway is designed for seamless integration with legacy Modbus RTU devices over RS485 and can easily bridge data to cloud platforms via Modbus TCP or MQTT.

Absolutely. Our gateway supports remote access, configuration, and diagnostics through SMS, GPRS, or static IP, enabling efficient device management without physical access.

Yes. The gateway is compatible with leading cloud platforms and supports MQTT, HTTP, and HTTPS protocols for real-time data transmission and monitoring.

Our RS485 Modbus Gateway is widely used in energy monitoring, water level and pump control, solar systems, building automation, SCADA systems, and smart infrastructure deployments.

The gateway includes SSL/TLS encryption and secure certificate handling, ensuring all communication between devices and cloud endpoints is protected against unauthorized access.

Yes, the gateway supports Firmware Over-the-Air (FOTA) updates to ensure all units remain secure, up-to-date, and functional without requiring manual intervention.