12-Port Serial over Ethernet Industrial Switch

FR-7M3208S is a new-generation Smart Industrial Ethernet Switch with 8-Port 10/100/1000Base-TX and 2-Port 100/1000Base-FX SFP with 2 x RS485/422/232, that converts between the Modbus TCP and Modbus RTU/ASCII protocols. With a dual power input design, FR-7M3208S can offer redundant mechanisms for critical applications that need always-on connections. It can also operate at a standard temperature range of -40 to 75°C. Housed in rugged DIN rail or wall mountable IP40 enclosures, these switches are perfect for harsh environments, such as industrial networking, and intelligent transportation systems (ITS). They are also suitable for many militaries and utility market applications where environmental conditions exceed commercial product specifications.

Product Features

  • All-aluminum Case, Compact and Fanless Design
  • -40 to 75℃ temperature maintains performance in extreme conditions
  • DIN Rail and wall-mountable – quick to install and remove for maintenance
  • Full gigabit L2+ management, easy to manage the industrial network by CLI/WebGUI/NMS.
  • Build up a redundant network with STP/RSTP/MSTP/ERPSv2.
  • RADIUS, SNMPv3, IEEE 802.1x, HTTPs, SSHv2 and sticky MAC address to enhance network security
  • EherNet/IP and Modbus TCP protocols supported for device management and monitoring
  • Electric 8KV surge protection Complete status indicator, working state at a glance
  • Power input polarity protection design, no worry about wrong operation
  • QoS, Priority mode based on 802.1P, Port & DSCP, queue scheduling algorithm including SP, WRR&SP+WRR

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Take Your Industrial Operations to the Next Level with Serial over Ethernet Switching

The Serial over Ethernet Industrial Switch is equipped with a rugged IP40 metal enclosure to ensure industrial operation in harsh environments where extremely low or high temperatures can be experienced. It is specially designed for outdoor and industrial applications such as city surveillance systems, smart manufacturing, etc. It is ideal for smart lamp post applications, and rapid deployment provides users with a cost-effective and highly reliable option.

Serial over Ethernet Industrial Switch

The Future of Industrial IoT is Here: Get Connected with Serial Over Ethernet Switch

The future of industrial IoT is here, and it’s time to get connected with a serial over ethernet switch. This technology offers a number of advantages for industries that are looking to take their operations to the next level. Serial over ethernet switch provides a high-speed connection between devices and helps to facilitate communication between them. This means that data can be transferred more quickly and efficiently between devices, allowing for better decision-making and faster response times. In addition, serial over ethernet switch is more robust and reliable than other methods of connecting devices, making it ideal for mission-critical applications.

Serial over Ethernet Industrial Switch

Streamline Your Serial Communication With Fiberroad’s Industrial Switch

Fiberroad Serial over Ethernet Industrial Switch provides an all-in-one solution. It converts RS232/422/485 connections to Ethernet connections, allowing seamless communication between traditional serial-based devices such as PLC, meters, sensors, and barcode readers to an IP-based Ethernet device. More importantly, the industrial switch is fully compliant with Modbus/TCP and offers a convenient solution for connecting existing devices or controllers running the Modbus serial protocol(Modbus/ACSCII or Modbus/RTU) to an Ethernet network.

Serial over Ethernet Industrial Switch

Build Up Secure Network with L2+ Industrial Switch

FR-7M3208S provides robust Layer 2+ Gigabit network connectivity, including but not limited to Static route, LAN network security, ACL/QoS policy… Moreover, By configuring ITU-T G.8032 ERPS (Ethernet Ring Protection Switching) technology, Spanning Tree Protocol (802.1s MSTP), and redundant power systems in industrial automation networks to enhance system reliability and uptime in harsh environments. As can be seen, the Managed Industrial Switch is easy to manage and maintain.

Manage the Industrial Network Anytime, Anywhere

Managed Industrial Ethernet Switch allows various network management methods, such as the WebGUI, CLI and NMS. The notion of easy to use, particularly with no additional hardware investment and installation. Industrial Network Switch can deploy centralised management, Layer 2 to Layer 4 QoS, Bandwidth allocation, real-time monitoring, etc.

Serial over Ethernet Industrial Switch NMS

Serial over Ethernet Switch FAQs

How does the Serial over Ethernet industrial switch work?

The Serial over Ethernet industrial switch works by converting existing serial connections (RS-232/422/485) to Ethernet connections, allowing for communication between serial-based devices and IP-based Ethernet devices. It is also fully compliant with Modbus/TCP protocol and provides an easy solution for connecting existing devices or controllers running the Modbus serial protocol. Furthermore, the industrial switch provides real-time data access, secure network transmissions, remote diagnostic capabilities, multiple operating modes, and more. With its powerful yet flexible features, this industrial switch is ideal for both short-term and long-term applications.

How to set up ITU-T G.8032 ERPS on this industrial switch?

Setting up ITU-T G.8032 ERPS on our industrial switch is simple and straightforward. With the intuitive web-based user interface, you can easily configure multiple rings with just a few clicks. Moreover, our advanced ERPS (Ethernet Ring Protection Switching) technology enables automatic node switching in case of any link failure, ensuring complete redundancy and maximum system uptime even in harsh environments.

How do I connect my Serial over Ethernet switch to my network?

The Serial over Ethernet switch is easy to set up and requires no special configuration. First, connect the switch to your local area network using a standard Ethernet cable. Then, connect your serial devices to the appropriate serial ports on the switch using RS-232/422/485 cables (depending on what type of serial devices you are connecting). Finally, you can use the integrated web interface or Modbus/TCP protocol to configure and manage the switch for further customization.

What is Modbus/TCP Protocol?

The Modbus/TCP Protocol is a communications protocol built with industrial applications in mind. It’s designed as a master-slave protocol, meaning that one device (the master) sends requests to other devices (the slaves) and can receive responses from them. The Serial over Ethernet Switch allows you to use this protocol by converting existing serial connections (RS-232/422/485) to Ethernet connections, allowing for communication between serial-based devices and IP-based Ethernet devices.

Ethernet Interface
Ports 8×10/100/1000Base-T(X)Ports(RJ45 connector)

2×100/1000Base-FX (SFP Slots)

2x RS485/422/232(5-pin Serial Terminal)

Pors Mode(Tx) Auto-Negotiation Speed

Full/Half Duplex Mode

Auto MDI/MDI-X Connection

Standards IEEE 802.3 for 10BaseT

IEEE 802.3u for 100BaseT(X) and 100BaseFX

IEEE 802.3ab for 1000BaseT(X)

IEEE 802.3z for 1000BaseSX/LX/LHX/ZX

IEEE 802.3x for flow control

IEEE 802.1D-2004 for Spanning Tree Protocol

IEEE 802.1w for Rapid Spanning Tree Protocol

IEEE 802.1s for Multiple Spanning Tree Protocol

IEEE 802.1p for Class of Service

IEEE 802.1Q for VLAN Tagging

IEEE 802.1X for authentication

IEEE 802.3ad for Port Trunk with LACP

Packet Buffer Size 4Mbits
Maximum Packet Length Up to 10K
MAC Address Table 8K
Transmission Mode Store and Forward (full/half duplex mode)
Exchange Property Delay time: < 7μs

Backplane bandwidth: 24Gbps

Packet Buffer 4Mbits
IGMP GroupS 2048
Max. No. of VLAN 64
VLAN ID Range VID 1 to 4094
Series Port Parameters
Ports 2 x RS485/422/232
Signals RS-232: a:TXD、b:RXD、c:Na、d:Na、e:GND

RS-422: a:T+、  b:T-、  c:R+、d:R-、 e:GND

RS-485: :a: Na、 b: Na、 c:D+、d:D-、 e:GND

Baud rate 2400-115200bps
Terminal 5-Pin Terminal
Load Capacity RS-485/422 supports 128 points polling environment
Movement RS-485 adopts automatic data flow control technology
Interface Protection RS-232  15KV static protection

Isolation voltage 2KV, electrostatic protection 15KV

Management Features
Serial Protocol TCP Server/Client, UDP, Modbus ASCII TCP Server/Client, Modbus RTU Server/Client
Interconnection Data Bits, Parity, Stop Bits Configuration
Serial Statistics Bytes and Packets Statistics
Ethernet Software Features
Redundant Network Support STP/RSTP/MSTP,Support EAPS、ERPSv2(Sub-50ms), Support manual aggregation,support static/dynamic LACP
Multicast Support Support IGMP Snooping V1/V2/V3,support GMRP, GVMP
VLAN Support IEEE 802.1Q 4K VLAN, support QINQ, Double VLAN,
Time Management SNTP
QOS Support COS、DSCP,8 queues,support WRR、SP、WFQ,QOS
POE Management Support total power control, POE on/ off, port power sequencing, POE timing
Diagnostic Maintenance Support port mirroring, Syslog, Ping
Industrial Protocol Modbus TCP(ASCII and RTU, Server and Client)
Management Function Support CLI、WEB、SNMPv1/v2/v3, Telnet server for management, EEE, LLDP, DHCP Server/Client(IPv4/IPv6)
Alarm Management Support 1 way relay alarm output, RMON, TRAP
Security Broadcast Storm Protection, HTTPS/SSL, RADIUS, SSH

Support DHCP Snooping, Option 82,802.1X security access,

Support user hierarchical management, ACL access control list,

Support DDOS,port-based MAC filtering / binding, MAC whitelist

Physical Characteristics
Housing Aluminum case
IP Rating IP40
Dimensions 138mm x 108mm x 49mm (L x W x H)
Installation Mode DIN Rail/wall-mountable
Weight 600g (With PoE: 650g)
Working Environment
Operating Temperature -40℃~75℃ (-40 to 167 ℉)
Operating Humidity 5%~95% (non-condensing)
Storage Temperature -40℃~85℃ (-40 to 185 ℉)

Support Documents

Item Type Version Release Date
Serial over Ethernet Industrial Switch_Product Data Sheet
481 KB
Quick Start Guide
22 MB
WebGUI Network Management User Manual
8 MB
Tech Note-ERPS
942 KB
Tech Note

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