The HollySys Hiot industrial iot gateway and modbus tcp gateway represent embedded hardware and software solutions engineered for distributed industrial architectures. These units integrate dual 10/100 Mbps Ethernet ports and multiple RS485 interfaces to execute reliable protocol translation and remote data collection. Backed by extensive industrial communication drivers, they enable structured edge computing and consistent field telemetry.
The modern industrial landscape often encounters operational bottlenecks related to fragmented field device protocols, high travel maintenance expenses, and unstable remote communication links in harsh environments. To resolve these challenges, the Hiot series operates as a lightweight industrial computer driven by ARM Cortex-A7 processors, offering solid local computing power and memory resources. The architecture features robust EMC protection, wide operating temperature thresholds, and integrated 4G LTE cellular modules supporting major telecom operators. Through secure virtualized tunneling mechanisms, field assets thousands of kilometers away can be mapped directly to engineering workstations, facilitating real-time diagnostics, remote program updates, and parameter configuration without physical site intervention.
Technical Specifications
Device Series: Hiot Series Industrial IoT Gateway
Model Variant 1: Hiot202C-4G
Model Variant 2: Hiot204-4G
Processor Architecture: ARM Cortex-A7
CPU Frequency Variant 1: 1.0 GHz @ 24 VDC
CPU Frequency Variant 2: 792 MHz @ 24 VDC
System Memory Variant 1: 512 MB DDR3L @ 24 VDC
System Memory Variant 2: 512 MB DDR3 @ 24 VDC
Storage Medium: Built-in Electronic Disk with 4G eMMC Flash
Operating Power Consumption: < 5.0 W @ 24 VDC
External Power Input: 24 VDC Nominal with 10.0 W Minimum Capacity
Ethernet Interface: 2 x 10/100 Mbps Adaptive Ports
Serial Interface Variant 1: 2 x RS485 Ports with COM1 Multiplexed as RS232/RS485
Serial Interface Variant 2: 4 x RS485 Ports with COM1 Multiplexed as RS232/RS485
Wireless Cellular Interface: Integrated 4G LTE Supporting Multiple Telecom Carriers
Physical Dimensions Variant 1: 30 mm x 120 mm x 95 mm @ W x H x D
Physical Dimensions Variant 2: 45 mm x 150 mm x 120 mm @ W x H x D
Mounting Configuration: 35 mm Standard DIN Rail Mounting
Storage Temperature Variant 1: -20 °C - 55 °C
Storage Temperature Variant 2: -40 °C - 70 °C
Operating Temperature Variant 1: 0 °C - 55 °C
Operating Temperature Variant 2: -25 °C - 55 °C
Operating Relative Humidity: 5% - 95% RH Non-Condensing
Industrial Grade Protection: National EMC Standards Compliance with Anti-Vibration and Shock Resistance
Operating System: Embedded Linux Kernel
Software Platform: IoT Smart Gateway Platform
Data Processing Capacity Variant 1: 1,000 Data Points @ Full Load
Data Processing Capacity Variant 2: 2,000 Data Points @ Full Load
Driver Support: Over 500 Industrial Protocol Collection Drivers
Data Management Features: Local Data Logging, Offline Caching, and Transparent Data Transmission
System Integration and Hardware Setup
Deploying the Hiot gateway into an existing control cabinet requires careful attention to physical mounting and electrical wiring practices. The unit snaps securely onto a standard 35 mm DIN rail, optimizing panel space within cramped industrial enclosures. Power input must be supplied via a stable external 24 VDC source with adequate amperage headroom to prevent voltage sags during cellular network transmission spikes.
For serial communications, shielded twisted-pair cables should be utilized across all RS485 connections to mitigate electromagnetic interference generated by nearby variable frequency drives and high-voltage contactors. When utilizing COM1 in multiplexed RS232 or RS485 modes, correct pinout configuration prevents signal distortion over long cable runs. Ethernet connections leverage standard RJ45 cabling with proper strain relief. Grounding terminals on the gateway chassis must be tied directly to the cabinet ground bar using low-impedance copper braid to eliminate ground loops and ensure optimal EMC performance.
Reliability and Environmental Durability
Industrial automation deployments demand continuous hardware availability under adverse environmental conditions. The Hiot series incorporates fanless thermal management, dissipating internal heat effectively through its compact extruded housing to prevent component degradation over extended operating lifecycles.
The hardware design adheres to strict national EMC standards, demonstrating strong immunity against electrostatic discharge, electrical fast transients, and radiated electromagnetic disturbances. Vibration resistance and anti-shock engineering protect internal solder joints and surface-mount components from mechanical fatigue caused by nearby heavy machinery. With conformal-coated internal electronics and defined operating temperature thresholds spanning down to -25 °C for model variants like the Hiot204-4G, the gateway maintains consistent performance in unconditioned field cabinets, pumping stations, and remote outdoor monitoring kiosks.
Selection Guidance and Alternative Options
Choosing the appropriate gateway model depends on the physical interface requirements and environmental constraints of the specific application. The Hiot202C-4G model features a 1.0 GHz processor and dual RS485 ports within a slim 30 mm width profile, making it well-suited for space-constrained control panels requiring moderate data collection up to 1,000 points. Conversely, the Hiot204-4G variant offers an expanded configuration with four RS485 ports and a wider operating temperature range down to -25 °C, supporting up to 2,000 data points for larger multi-drop serial networks.
Engineering teams seeking localized product support, technical consultation, or hardware matching can coordinate directly with Beijing Zhongping Technology. Local technical representatives provide comprehensive guidance regarding cross-reference selections, protocol compatibility verification, and inventory availability to streamline project implementation timelines.
Typical Application Scenarios and Field Value
The Hiot gateway delivers measurable operational value across diverse industrial sectors, including distributed municipal water treatment, remote renewable energy sites, and mobile construction machinery. By aggregating data from diverse programmable logic controllers and meters via Modbus TCP and serial protocols, the gateway translates raw field variables into structured packets for cloud platform ingestion.
The integration of local data logging and offline caching prevents data loss during intermittent cellular signal drops, ensuring historical data integrity. Furthermore, the remote virtual assistance capability allows maintenance engineers to troubleshoot device faults and modify control parameters securely from a centralized office. This capability significantly reduces physical travel expenses, shortens mean time to repair, and optimizes overall equipment effectiveness for original equipment manufacturers and system integrators.
Frequently Asked Questions (FAQ)
1. What are the typical lead times and shipping logistics managed by Beijing Zhongping Technology for standard orders?
Standard stock items are typically processed and dispatched within two to three business days, supported by secure logistics tracking to ensure prompt delivery to industrial sites.
2. What kind of commercial warranty and post-purchase technical support apply to these industrial gateways?
The gateways are backed by a standard 12-month manufacturer warranty covering hardware defects, supplemented by technical assistance from regional application engineers.
3. How does the Hiot gateway handle communication when the cellular network connection drops?
The device features built-in offline caching and local data logging capabilities, storing collected telemetry securely until cellular network connectivity is successfully restored.
4. Can the serial ports be configured for different communication protocols simultaneously?
Yes, the embedded software platform supports over 500 industrial protocol drivers, allowing multiple serial devices using distinct protocols to communicate concurrently.
5. What is the procedure for establishing a secure remote virtual connection to field equipment?
Engineers can utilize the embedded remote assistance platform to establish an encrypted virtual channel, mapping the remote field device directly to the engineering software environment.
6. What power supply specifications are required to operate the Hiot gateway safely?
The unit requires an external direct current power input operating nominally at 24 VDC, with an external power source capacity rated above 10 W.
7. How many data points can the Hiot204-4G model process and manage simultaneously?
The Hiot204-4G variant is engineered to support a robust data processing capacity of up to 2,000 distinct data points.
8. What operating system and software architecture power the gateway internals?
The gateway runs on an embedded Linux operating system coupled with a dedicated IoT smart gateway software platform designed for edge computing tasks.
9. What are the physical mounting requirements for installing the gateway inside a control panel?
The unit is designed for standard 35 mm DIN rail mounting, requiring adequate spacing around the housing to facilitate cable entry and natural thermal dissipation.
10. How does the hardware protect against electrical noise and electromagnetic interference in heavy industrial environments?
The unit incorporates rigorous EMC design conforming to national standards, alongside robust anti-vibration and shock-resistant internal physical construction.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a global industrial electrical automation service provider, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1) Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3) At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.
+86 010-64225983
+8613811814778
Building 26, Liyuan Community, Chaoyang District, Beijing, China
