ICPDAS RS Series User Manual page 13

Industrial Redundant Ring Switch – RS Series User Manual
like spanning tree, and SNMP to help with fault finding and system analysis were often
employed to enhance network resilience. If a network failure occurred the IT department
would casually look at repairing the equipment; there was no real rush as it was an office
network.
However, with industrial Ethernet you need very fast repair time and with an IT
department not readily available on the roadside, maintenance personnel need to be
made aware of the fault, find the error and repair it - quickly. To aid this, unique network
recovery features are employed to significantly enhance network recovery times. When
an IT department requires a level of redundancy a common method is to employ the
spanning tree protocol. However, spanning tree can be complex to program and
critically can take over 30 seconds to detect and recover from the fault – far to long for
critical applications!
ICP DAS RS Series incorporate propriety protocols that enable multiple Switches to be
placed into a redundant ring. A single Switch, configured as the network focal point will
monitor, detect and recover from a fiber or copper link failure within approximately
50mS – for the majority of applications a seamless process. The configuration process
of the network focal point is simple as it must be remembered that as the switches are to
be installed on the roadside the first to be called to rectify a fault will more than likely be
Maintenance personnel.
Module
Feature
Communication Protocol
Managed Interface
Service
Redundancy
Amount of Rings
Single Coupling
Redundant Coupling
Router/IP sharing
IEEE standards
Alarm
Convenience
ICPDAS Ring Switch
Modbus/TCP
Modbus/RTU
Serial Console, Utility
DIP Jumpers
Rotary Jumper
N/A
Cyber Ring
(Variable recovery time from 100
ms to 1.5s)
2
Yes
Yes
No
802.3
802.3x
802.3u
802.1D
Relay Output
Modbus
Easy to use/configure
TDRS4050601
General Managed Switch
SNMP
IGMP
Serial Console
Utility
Web
telnet
QoS, CoS, VPN, FTP, HTTP,
HTTPS, SSH, VLAN
Trunking, Spanning Tree, Rapid
Spanning Tree
1
No
No
Yes
802.3
802.3x
802.3u
802.1D/w
802.1p
802.1Q
SNMP
N/A
6