4-Port RS485 to Ethernet Gateway with Dual LAN

Enterprise level 4 channel RS485 to Ethernet IoT Gateway, dual Ethernet ports for cascading daisy chain. Optional 3000V optical isolation (VI version) is available and provides extensive Modbus RTU/TCP to MQTT/JSON edge computing for advanced industrial automation architectures.

Part No. 4CH-RS485-ETH (V)

sku : IoT-SS105

INSTANT QUOTE

4-Channel RS485 to Ethernet Serial Server Overview

Primary function

bi-directional transparent data transmission between RS485 and Ethernet

Bi-directional transparent data transmission architecture

4-Port RS485 to Ethernet communication mapping

Installation Method

Support Rail-Mount and Wall-Mount, compact size, cost-effective

Rail-Mount and Wall-Mount Installation configurations

Power Supply

4CH-RS485-ETH (V) support DC 9~24V wide voltage range input

4CH-RS485-ETH (VI) support DC 18~36V wide voltage range input

Industrial wide voltage power supply input

Compact footprint for industrial control panels

Support cascading function

supports 10/100M dual ports design, supports switch function and can be cascaded

Dual Ethernet ports switch and cascading function

Modbus gateway support

Suitable for Modbus networking upgrade

Modbus RTU to Modbus TCP network upgrade

Multi communication modes

supports TCP server / TCP client / UDP multicast / UDP mode, 4 channels, each channel supports in below functions are separately

Independent 4-channel communication modes

TCP Server and Client configuration for 4 ports

Modbus gateway and edge computing settings

Interface Diagram

4CH-RS485-ETH hardware interface and LED diagram

Outline dimensions

Selection guide

Model	Serial Port Type	Power Supply	Voltage Range	Dimensions (L × W × H)
1CH-RS485-ETH	Single serial port server	Screw terminal	DC 9~24V	893759mm
1CH-RS232/485/422-ETH (V)	RS232/485/422 choose one, single serial port server	Screw terminal + DC 5.5 power port	DC 9~24V	946525mm
1CH-RS232/485/422-ETH	RS232/485/422 choose one, single serial port server	Screw terminal + DC 5.5 power port	DC 9~24V	946525mm
2CH-RS485-ETH	Dual serial ports server	Screw terminal	DC 9~24V	378389mm
2CH-RS485-ETH(V)	Dual serial ports server	Screw terminal	DC 9~24V	15010541mm
2CH-RS232/485/422-ETH	RS232/485/422 choose one, Dual serial ports server	Screw terminal + DC 5.5 power port	DC 9~24V	946525mm
4CH-RS485-ETH (V)	4 serial ports server	Screw terminal	DC 9~24V	15010541mm
4CH-RS485-ETH	4 serial ports server	Screw terminal	DC 9~24V	378389mm
4CH-RS232/485/422-ETH	RS232/485/422 choose one, 4 serial ports server	Screw terminal + DC 5.5 power port	DC 9~24V	9219725mm
8CH-RS485-ETH (V)	8 serial ports server	Screw terminal	DC 9~24V	27010526mm
8CH-RS485-ETH	8 serial ports server	Screw terminal	DC 9~24V	378389mm
8CH-RS232/485-ETH	8 serial ports server	Screw terminal + DC 5.5 power port	DC 9~24V	27010526mm
16CH-RS232/485/422-ETH	16 serial ports server	AC 220V power port	AC 220V	48018044mm
32CH-RS232/485/422-ETH	32 serial ports server	AC 220V power port	AC 220V	48018044mm

Hardware & Interfaces	4CH-RS485-ETH (V)	4CH-RS485-ETH (VI)
Ethernet Port	2× 10/100M RJ45 Ports (Supports Cascading/Switch function)
Serial Interface	4× RS485 Ports
Power Input	DC 9~24V (30mA@12V DC)	DC 18~36V (120mA@24V DC)
Optocoupler Isolation	Without isolation	3000V Isolation Included
Serial Specifications
Baud Rate	300 ~ 921600 bps
Data & Parity Bits	Data: 5 ~ 9 bits \| Parity: none, odd, even, mark, space
Software & Network
Protocols	TCP, UDP, HTTP, Modbus, MQTT, JSON, VirCom
Configuration	WEB Browser, Vircom, AT command
Environment & Dimensions
Operating Temp.	-40°C ~ +85°C
Dimensions	L 15cm × W 10.5cm × H 4.1cm

Dual Ethernet Ports with Cascading Function

One of the features of the 4CH-RS485-ETH series is a built-in network switch with two 10/100M Ethernet ports. This enables daisy chaining (cascading) of a number of gateways on standard Ethernet cables. It reduces the wiring complexity significantly and avoids the need for purchasing external industrial network switches within the control cabinet.

Advanced (V) vs (VI) Version Options

The model is available in two different versions to meet a range of field needs. The standard (V) version is 9~24V DC input which is suitable for most automation environments. The upgraded (VI) version offers a strong 3000V isolation for opto couplers with 18~36V DC input. It is designed to be used for protection against harsh ground loops and electrical surges in heavy industrial applications.

4-Channel Independent Edge Computing

All 4 RS485 interfaces are independently operable. It is a very functional Modbus gateway of storage type in addition to basic transparent transmission. It can natively parse the Modbus RTU telemetry into structured JSON formats, allowing for automated and scheduled uploads of the data directly to enterprise platforms over MQTT or HTTP POST.

Documents

📄 Valtoris 4CH-RS485-ETH (V)/(VI) User Manual 📝 Bid Specifications for Integrators (.doc)

Utilities

⚙️ Setup Software: VirCom 7.22

Technical FAQ & Troubleshooting

What is the benefit of the dual Ethernet ports (Cascading function)?

Dual RJ45 ports with built-in Ethernet switch. This allows you to daisy-chain (cascade) multiple 4CH gateways to a single uplink port on your router using normal Ethernet cables. This eliminates the need for an extra industrial switch purchase and installation in your control cabinet, greatly reducing wiring clutter and hardware cost.

How do I choose between the (V) version and the (VI) version?

Choice is determined by your power supply and interference environment. The standard (V) version runs on 9-24V DC and is great for clean, stock panels. The (VI) version requires 18-36V DC but provides 3000V optocoupler isolation. If your RS485 wiring is in close proximity to high voltage equipment, VFDs, or large motors you would definitely want to choose the (VI) version to prevent ground loops that can damage the transceiver.

Can the 4 serial ports operate on completely different network subnets?

Yes. They can share a single IP address (differentiated by TCP ports), but the gateway also supports independent IP allocation. Web browser configuration lets you assign a unique IP address to each of the 4 serial ports and securely bridge serial data across different IT and OT subnets.

Ready to deploy? Order direct from our Official Store.

Global delivery and comprehensive technical support included.

🛒 Buy Online Now