Managed Ethernet Switch Solutions
EtherDevice™ Switch
EDS-508A/505A Series
Industrial 8- and 5-Port Advanced Managed Ethernet Switches
Plug-n-play Turbo Ring (Recovery time < 300 ms), RSTP/
STP (IEEE802.1W/D) for Ethernet redundancy
Managed Ethernet Switch EDS-508A/505A Series
QoS, IGMP snooping/GMRP, VLAN, LACP, SNMP V1/V2c/
V3, RMON supported
Customer configured e-mail notification by exception
User-friendly web-based configuration and management
-40 to 75˚C operating temperature (-T models)
Advanced Industrial Networking Capability
• Lock port for authorized only MAC address access
• Plug-n-Play, Redundant Ethernet Ring (recovery time < 300
ms at full load) and RSTP/STP (IEEE802.1W/D)
• Port mirroring for online debugging
• IGMP Snooping and GMRP for filtering multicast traffic from
industrial Ethernet
• Digital inputs to integrate sensors and alarms with IP networks
• Automatic warning by exception through email, relay output
• Supports port-based VLAN, IEEE802.1Q VLAN and GVRP
protocol to ease network planning
• Automatic recovery of connected device’s IP addresses
• Supports QoS-IEEE802.1p/1Q and TOS/DiffServ
to increase determinism
• Redundant, dual DC power inputs
• Supports 802.3ad, LACP for optimum bandwidth utilization
• Port Trunking for optimum bandwidth utilization
• RMON for efficient network monitoring and proactive capability
• SNMP V1/V2c/V3 for different levels of network
management security
• Supports IEEE802.1X and https/SSL to enhance network security
Designed for Industrial Applications
• Bandwidth management prevents unpredictable network status
• Supports ABC-01 (Automatic Backup Configurator) for
system configuration back up.
• Line-swap fast recovery (Patented)
• -40 to 75°C operating temperature range
• IP30, rugged high-strength case
• Long-haul transmit distance of 40 km or 80 km
• DIN-Rail or panel mounting ability
• Configurable by Web browser, Telnet/Serial console,
Windows utility
• Send ping commands to identify network segment integrity
Recommended Software and Accessories
• SNMP OPC Server Pro
• DR-4524, DR-75-24, DR-120-24 DIN-Rail 24 VDC Power
Supply Series
Easy Browser-based Configuration
For industrial automation applications, redundancy is an
important issue to help increase the reliability of your system.
MOXA EtherDeviceTM Redundant Switch EDS-508A/505A
comes equipped with a redundant network protocol called
Turbo Ring that was developed by Moxa. Turbo Ring gives
users an easy way to establish a redundant Ethernet network,
and with its ultra high-speed recovery time, once any segment
of your network is disconnected, your automation system will
be back to normal in less than 300 ms.
Turbo Ring
Backup Path
Total Solutions for Industrial Device Networking
Couple several Turbo Rings for Distributed Applications
For some systems, it may not be convenient to connect all
devices in the system to create one BIG redundant ring, since
some devices could be located at a remote site. Turbo Ring’s
“Ring Coupling” function helps you separate those distributed
devices into different smaller redundant rings, but in such a
way that they can still communicate with each other.
Ring Coupling Enabled
ry Pa
Turbo Ring
up Pa
Turbo Ring
IEEE 802.1X Enhances User Authentication
EDS-508A/505A supports IEEE802.1X (Port-Based Network
Access Control) to enhance user authentication.
Only authorized users can access the port. Authentication is done
using the local user database or an external RADIUS server.
Group 1 Multicast Stream
EDS-508A/505A supports IEEE802.1D-1998 GMRP (GARP
Multicast Registration Protocol) and IGMP Snooping provides the
ability to prune multicast traffic so that it travels only to those end
destinations that require this kind of traffic, reducing the amount of
traffic on the Ethernet LAN.
Group 2 Multicast Stream
IGMP Group 2 IGMP Group 1 IGMP Group 2 IGMP Group 1
VLAN Eases Network Planning
A VLAN is a group of devices that can be located anywhere
on a network, but which communicate as if they are on the
same physical segment. VLANs can be used to segment your
network without being restricted by physical connections—a
limitation imposed by traditional network design. Besides, since
all automation systems incorporate sensitive devices that must
be protected from unauthorized access, it is very important
Department 1
to have some type of authentication system set up that only
allows authorized users to access the system. If devices
belong to different VLANs, they cannot communicate with each
other, providing extra security and protection from unwanted
invasion or traffic. The IEEE802.1Q standard and GVRP
protocol can exchange the same interoperable parameters to
keep consistent VLAN settings over the entire network.
Department 2
Managed Ethernet Switch EDS-508A/505A Series
IGMP Snooping and GMRP for Filtering Multicast Traffic
Department 3
Managed Ethernet Switch Solutions
QoS Increases Determinism
Quality of Service (QoS) provides a traffic prioritization
capability to ensure that important data is delievered
consistently and predictably. EDS-508A/505A series can
inspect IEEE802.1p/1Q layer 2 CoS tags, and even layer
Collected date
Control Message
Managed Ethernet Switch EDS-508A/505A Series
Mgt. Message
3 TOS information, to provide a consistent classification of
the entire network. EDS-508A/505A series’ QoS capability
improves your industrial network’s performance and
determinism for mission critical applications.
Low Priority
Top Priority
Low Priority
High Priority
Top Priority
High Priority
RMON for Efficient Network Monitoring and Proactive Capability (available soon)
RMON, Remote Network Monitoring, is an Internet Engineering
Task Force (IETF) standard monitoring specification that
allows various network agents and console systems to
exchange network monitoring data. RMON provides you
with comprehensive network-fault diagnosis, planning, and
performance-tuning information. It helps you manage your
network in a more proactive manner. If configured correctly,
RMON probes deliver information before problems occur. This
means that you can take action before the problems affect users.
Port Trunking for Flexible Network Connections
Port Trunking allows devices to communicate by aggregating up
to four links in parallel with a maximum of 4 ports for each link.
That means users could connect one EDS to another EDS by
port trunking to double, triple, or quadruple the bandwidth of the
Port Trunking up to 800 Mbps
Bandwidth Management Prevents Unpredictable Network Status
Any single device on a network should not have unlimited
bandwidth, particularly when it malfunctions. The most well-known
problem is the broadcast storms caused by setting up the wrong
topology, or by devices that malfunction. The EDS-508A/505A
series not only prevents broadcast storms, but also can configure
the ingress/egress rate of unicast/multicast/broadcast packets, and
in this way give administrators full control of limited bandwidth to
prevent unpredictable faults.
Traffic filtered or dropped inside EDS-508A/505A
Normal Traffic
Network Device
Port Lock to Allow Authorized Access by Specific MAC Addresses
The EDS-508A/505A series can assign protected static MAC
addresses to specific ports. By using the Port Lock function,
locked ports will not be able to learn other addresses but
only allow the traffic that comes from the preset static MAC
address, helping to block unwanted invasion and usage.
Device without unauthorized Mac address
Device with authorized Mac address
Total Solutions for Industrial Device Networking
Port Mirroring for Online Monitoring
In some cases, a network is so large that it is difficult to achieve
the expected level of communications. Industrial communications
IEEE 802.1X enhances user authentication
applications use more of a command-response style than the
file-transfer style used in office network environments. This means
that when first setting up an industrial Ethernet network, control
engineers may need to use a second port to monitor the actual
activity between their devices and computer host. EDS-508A/505A
series’ mirroring port function helps to ensure that the system
behaves as expected.
Mirrored Traffic
Automatic Warning by Event
industrial Ethernet switches that connect these devices must
take responsibility for providing system maintainers with realtime alarm messages. Even when control engineers are out of
the control room for an extended period of time, they can still
be informed of the status of devices almost instantaneously
when exceptions occur.
The traditional way of determining device status is to poll
devices periodically, but this is not “real-time” enough, and
is not very efficient. Warning messages must be actively
triggered by events. To take care of these requirements,
industrial Ethernet Switches need features such as:
Warning by e-mail
The EDS-508A/505A series can send out a warning e-mail
when an exception is detected, providing system managers
with real-time alarm messages.
Switch Events
Port Events
Cold Start
Warm Start
Link On
Power On/Off
Authentication failure
Link Off
Topology Change
Configuration Change
Traffic Overload
Warning by Relay Output
The EDS-508A/505A series provides two relay outputs that can
be set up to indicate events with different importance to notify
or warn engineers in the field, so the engineer can use the
appropriate emergency maintenance procedures to respond
quickly to higher priority messages.
DI to Integrate Other Important Sensors
Managed Ethernet Switch EDS-508A/505A Series
Since industrial Ethernet devices are often located at the
endpoints of a system, such devices cannot always know
what’s happening elsewhere on the network. This means that
• Email
With two digital inputs, the EDS-508A/505A series can
integrate sensors into its automatic alarm mechanism, by
redirecting warning messages to an IP network by e-mail,
SNMP trap, or OPC.
Replace Faulty Devices
To reduce the effort required to configure IP addresses
repeatedly, the EDS-508A/505A series comes equipped with
DHCP/BootP server and RARP protocol to set up IP addresses
of Ethernet-enabled devices automatically.
New Device
Managed Ethernet Switch Solutions
Easy Browser-based Configuration
The EDS-508A/505A series is easily configured over the
network by web browser, Telnet console, or a Moxa provided
Windows utility. In addition, Moxa’s Batch Configurator can
also be used to store and copy configuration parameters to
multiple EDS-508A/505A units simultaneously.
Managed Ethernet Switch EDS-508A/505A Series
Dimensions (unit = mm)
Side View
DIN-Rail Kit
Front View
Panel Mounting Kit
electrically isolated from the electronics.
Standards: IEEE802.3, 802.3u, 802.3x, 802.1D, 802.1W,
802.1Q, 802.1p , 802.1X, 802.3ad
• -30 to +3V for state “0”
Protocols: IGMP V1/V2/V3 device, GVRP, SNMP V1/V2c/
V3, DHCP Server/Client, BootP, TFTP, SNTP, SMTP, RARP,
GMRP, LACP, RMON and EDS-SNMP OPC Server Pro (Optional)
MIB, Bridge MIB, RSTP MIB, RMON Group 1, 2, 3, 9
Flow Control: IEEE802.3x flow control, back pressure flow control
RJ45 Ports: 10/100BaseT(X) auto negotiation speed, F/H
duplex mode, and auto MDI/MDI-X connection
Fiber Ports: 100BaseFX ports (SC/ ST connector)
Console: RS-232 (RJ45)
LED Indicators: PWR1, PWR2, FAULT, MASTER, COUPLER, 10/100M
DIP Switch: Turbo Ring, Master, Coupler, Reserve
Alarm Contact: Two relay outputs with current carrying
capacity of 1A @ 24 VDC
Digital Input: Two inputs with the same ground, but
Rear View
• +13 to +30V for state “1”
• Max. input current: 8 mA
Optical Fiber
Multi mode:
0 to 5 km, 1310 nm (50/125 µm, 800 MHz*km) 0 to 4 km, 1310 nm (62.5/125 µm, 500 MHz*km)
Multi mode :
-20 dBm
Single mode: 0 to 40 km, 1310 nm (9/125 µm, 3.5 PS/(nm*km))
0 to 80 km, 1550 nm (9/125 µm, 19 PS/(nm*km))
Single mode: 0 to 40 km, -5 dBm
0 to 80 km, -5 dBm
Max. TX Output:
Multi mode :
-14 dBm
Single mode: 0 to 40 km, 0 dBm
0 to 80 km, 0 dBm
Sensitivity: -36 to -32 dBm (Single), -34 to -30 dBm (Multi)
Total Solutions for Industrial Device Networking
Input Voltage: 24 VDC (12 to 45 VDC), redundant dual inputs
Connection: Two removable 6-pin terminal blocks
Overload Current Protection: Present, can withstand 1.6A
Reverse Polarity Protection: Present
Hazardous location:
UL/cUL Class I, Division 2, Groups A, B, C, and D (Pending)
ATEX Class I, Zone 2, EEx nC IIC (Pending)
EMI: FCC Part 15, CISPR (EN55022) class A,
Casing: IP30 protection, aluminum case
Dimensions (W x H x D): 80.5 x 135 x 105 mm
3.17 x 5.31 x 4.13 in.
Weight: 1040 g
Installation: DIN-Rail, Wall Mounting (optional kit)
EN61000-4-2 (ESD), level 3 EN61000-4-3 (RS), level 3
EN61000-4-4 (EFT), level 4 EN61000-4-5 (Surge), level 3
EN61000-4-6 (CS), level 3
EN61000-4-8 EN61000-4-11
0 to 60°C (32 to 140°F)
-40 to 75°C (-40 to 167°F) for -T models
Vibration: IEC60068-2-6
Storage Temperature: -40 to 85°C (-40 to 185°F)
Ambient Relative Humidity: 5 to 95% (non-condensing)
5 years
*Preliminary Specifications are subject to change without notice.
Regulatory Approvals
Safety: UL60950, UL 508, CSA C22.2 No. 60950, EN60950 (Pending)
Ordering Information
Ordering Code
Fiber Port
FO Connector
Single Mode Distance
Operating Temperature
M: One Multi mode
S: One Single Mode
MM: Two Multi Mode
SS: Two Single Mode
SC: SC Connector
ST: ST Connector
80: 80 km
T: Operating Temp. -40 to 75˚C
* Standard Models: 0 to 60˚C
EDS-508A Series
Wide Temperature:
EDS-505A Series
Managed Ethernet Switch EDS-508A/505A Series
Operating Temperature:
* For detailed information, check the above specifications.
•DR-4524: 45W/2A DIN-Rail 24 VDC Power Supply, 85 to 264 VAC input
•DR-75-24: 75W/3.2A DIN-Rail 24 VDC Power Supply, 85 to 264 VAC input
•DR-120-24: 120W/5A DIN-Rail 24 VDC Power Supply, 88 to 132 VAC/176 to 264 VAC input by switch
•EDS-SNMP OPC Server Pro: Software CD and Manual
•WK-46: Wall Mounting Kit