EOTec 2104 User Manual
Advanced Features of Switch Tools
802.1p Priority
As with IP ToS, the value of a message
’
s priority determines which outbound port
priority queue it gets placed in. The only difference is that the user can now pick how
each individual priority value gets assigned to each outbound priority queue. Click to see
the default table the switch uses for assigning priorities to output port priority queues and
to learn how to customize the table.
The wizard breaks down priority configuration into three parts:
•
Port
Priorities
•
Advanced
•
Tag
Mapping
Remote Status Monitoring
There are two ways to remotely monitor the status of your Ring Switch network.
The first method is to use the EOTec 2104 Switch Tools status display. This display will
show the status of the selected Ring Switch by providing details such as port, power,
and ring states. Find more details about how to use this display by referring to the
EOTec 2104 Switch Tools on-line help.
The second method that can be used for determining the state of your Ring Switch
network is via Modbus UDP. Through Modbus UDP (
Note: TCP is not supported
), you
can remotely monitor the status of the EOTec 2104 Ethernet Ring Switch. Using the
EOTec 2104 Switch Tools, you can configure the ring switch as a Modbus slave station
with its own Modbus station number and IP address.
Monitoring the Status of EOTec 2104 Ethernet Ring Switches
Each EOTec 2104 Ring Switch has 32 discrete input registers that are regularly updated
with status information on port link and ring status (both copper and fiber), and status of
the OK and ON LEDs. These 32 registers can be polled using Modbus Protocol.
These switches respond as Modbus slaves using standard Modbus over Ethernet
messaging. The EOTec 2104 Ethernet Ring Switch supports standard Modbus IP
packets. In order to maintain their real-time characteristics, these switches support UDP
messaging. These switches will not establish TCP/IP sessions because the TCP layer
adds overhead to the communications and cannot ensure real-time performance.
(Please note that both TCP and UDP use the identical IP message packets.)
Most Modbus over Ethernet masters give you a choice of using UDP or TCP.
Sometimes the UDP is identified as a real-time option. For computer applications, the
use of the
KepServerEx OPC Server
is recommended.
Note
: You also will need to purchase the Modbus Ethernet driver for the KepServerEx.)
Modbus support must be enabled in the EOTec 2104 Switch Tools utility. When Modbus
status reporting is enabled, it is necessary to assign a unique IP address to each Weed
Ring Switch. It is also recommended to assign a unique Modbus station address (1 to
247) to each switch.
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