RS-408

Introduction

The RS-408 is a 8-port Industrial Ethernet (10/100 Base-TX) Real-time Redundant Ring Switch. RS-408 supports 10/100M auto negotiation feature and auto MDI/MDI-X function, it can automatically switch the transmission speed (10 Mbps or 100 Mbps) for corresponding connections. Built-in ICP DAS Cyber-Ring technique enables multiple switches to be placed into a redundant ring. Typically the switch detects and recovers from a copper link failure within approximately 20 ms – for the majority of applications, it is seamless process. The RS-408 is much more easy to use and absolutely free of software setting. After unpacking the shipping case, it just takes one or two dip or rotary switch to make it work. RS-408 provides two power inputs that can be connected simultaneously to live DC power sources. If one of the power inputs fails, the other live source will act as a backup to automatically support the it's power needs. And the relay output facility can deliver warning signal while power or network link failure.

RS-408 series are ICPDAS’ latest real-time redundant ring switches. 
They can satisfy the requirement for link-lose-backup in the industrial field application:

Link-Loss-Backup: 
The Backup path will become Active within 100ms (configurable), 
and keep the whole LAN working 




RS-405 series supports versatile topologies:

Versatile Topologies: 
The proprietary STP protocol of RS-408 allows users to construct
more complicated topologies than basic ring architecture.




It is also possible to construct a cost effective redundant ring Ethernet LAN by mixing 
RS-408 with other low cost unmanaged Ethernet Switch, the NS-205/208 series.

Cost Effective Ring Ethernet: 
Having one RS-408 and other lower cost unmanaged Ethernet 
switches (e.g. NS-205/208 series) in a ring, this Ethernet LAN
is also tolerant to link lose.





RS-408 series are equipped with 2 power inputs, which are redundant for each other. 
The relay output facility can deliver warning signal during power failure or link loss.

Relay Output: 
The relay output of RS-408 could deliver warning signal when 
failure on one power input or when link lose.




With supporting Modbus/TCP protocol, the administrator of Ethernet LAN 
can get the information of individual port status of RS-408.

Modbus/TCP: 
RS-408 series supports Modbus/TCP protocol. Using this protocol, 
administrator of Ethernet LAN can read port status of RS-408 and 
SCADA can know the condition of the LAN it's based on.

Features

• Automatic MDI/MDI-X crossover for plug-and-play
• Store-and-forward architecture
• Each port supports both 10/100 Mbps speed auto negotiation
• Full duplex IEEE 802.3x and half duplex backpressure flow control
• Supports wide operating temperature -40 °C ~ +75 °C
• 3.2 Gbps high performance memory bandwidth
• Redundant Dual Power Inputs +10 VDC ~ +30 VDC
• Power failure alarm by relay output
• Modbus remote monitoring
• Supports Modbus OPC Server
• 2048 MAC addresses
• Frame buffer memory: 1 Mbit
• Absolutely free of software setting
• Built-in Cyber-Ring redundant technique
• DIN-Rail Mounting