Industrial Ethernet Solutions for
Control and Automation
e-mail: info@moxanet.com www.moxa.com
1-15
EDS-508 Series Managed Redundant Switch
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
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-508
Series’ mirroring port function helps to ensure that the system
behaves as expected.
Automatic warning by event
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 industrial Ethernet
switches that connect these devices must take responsibility for
providing system maintainers with real-time 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-508 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-508 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
Replace Faulty Devices
To reduce the effort required to repeatedly configure IP
addresses, the EDS-508 Series comes equipped with DHCP/
BootP server and RARP protocol to automatically set up IP
addresses of Ethernet-enabled devices.
With two digital inputs, the EDS-508 Series can integrate sensors into
its automatic alarm mechanism, turning warning messages into IP
network by e-mail, SNMP trap, or OPC.
(16 paginas)
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