Port Statistics
Original instructions
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Open the Page
Access the Port Statistics page from the Diagnostics tab (Menu → Connected Devices → Port Statistics):
NOTE: This page is updated every 5 seconds. Click Reset Counters to reset all dynamic counters to 0.
Diagnostic Information
This page shows the statistics for each port on the communications module. This information is associated with the configuration of the Ethernet ports and the configuration of the SERVICE port.
The frame color indicates the port activity:
View these statistics:
Statistic
Description
Speed
the configured port speed (0, 100, 1000 Mbps)
Duplex
The current duplex mode is composed of some combination of these elements:
  • TP/Fiber
  • -Full/-Half/-None
  • Link/(no word)
NOTE: When the thirteenth bit of the word in the Modbus response is 1, Link is added to the duplex mode string (TP-Full Link, TP-Half Link, etc.).
Redundancy Status
The Ethernet port is:
  • learning or forwarding information
  • discarding information
  • disabled
Success Rate
successful transmissions (percentage)
Total Errors
number of detected errors
Expanded View
Click Detail View to see more statistics:
Statistic
Description
Frames Transmitted
Number of frames successfully transmitted
Frames Received
Number of frames received
Excessive Collisions
Number of excessive Ethernet collisions
Late Collisions
Number of late Ethernet collisions
CRC Errors
Number of detected cyclic redundancy check errors
Bytes Received
Number of bytes received
Inbound Packet Errors
Number of detected inbound packet errors
Inbound Packets Discarded
Number of inbound packets discarded
Bytes Transmitted
Number of bytes transmitted
Outbound Packet Errors
Number of detected outbound packet errors
Outbound Packets Discarded
Number of outbound packets discarded
Carrier Sense Errors
Number of detected carrier sense errors. A carrier sense error is detected when a port tries to transmit a frame, but cannot do so because no carrier is detected.
FCS Errors
Number of detected frame check sequence (FCS) errors. An FCS error is detected when a frame is corrupted during transmission as indicated by its checksum value.
Alignment Errors
The number of byte alignment errors that have been detected. A byte alignment occurs when the number of bits in a frame is not divisible by 8. An alignment error also triggers an FCS error.
Internal MAC Trans. Errors
The number of detected transmit errors that are not late collisions, excessive collisions, or CRC errors.
Internal MAC Rec. Errors
The number of detected receive errors that are not late collisions, excessive collisions, or CRC errors.
SQE Test Errors
The number of detected signal quality error (SQE) instances. Some Ethernet transceivers use an SQE heartbeat to indicate it is connected to a host interface. This detected error indicates that a transceiver has no heartbeat. Note that not all transceivers produce a heartbeat.