Port Diagnostics
When your project is online, you can view the status of the embedded Ethernet port on the controller.
- Access the Controller Properties.
- On the Controller Properties dialog box, click the Port Configuration tab.
- Click the Ellipse button in the Port Diagnostics column.
Ethernet Port Diagnostics

The Port Diagnostics dialog box displays diagnostic details.
Port Diagnostics Details

Parameters | Description |
|---|---|
Interface Counters | The Interface Counters values have no value when you are offline or online and there is a communication error. |
Octets Inbound | Displays the number of octets that are received on the interface. |
Octets Outbound | Displays the number of octets that are transmitted to the interface. |
Unicast Packets Inbound | Displays the number of unicast packets that are received on the interface. |
Unicast Packets Outbound | Displays the number of unicast packets that are transmitted on the interface. |
Non-unicast Packets Inbound | Displays the number of non-unicast packets that are received on the interface. |
Non-unicast Packets Outbound | Displays the number of non-unicast packets that are transmitted on the interface. |
Packets Discarded Inbound | Displays the number of inbound packets that are received on the interface but discarded. |
Packets Discarded Outbound | Displays the number of outbound packets that are transmitted on the interface but discarded. |
Packets With Errors Inbound | Displays the number of inbound packets that contain errors (excludes discarded inbound packets). |
Packets With Errors Outbound | Displays the number of outbound packets that contain errors (excludes discarded outbound packets). |
Unknown Protocol Packets Inbound | Displays the number of inbound packets with unknown protocol. |
Media Counters | The Media Counters values have no value when you are offline or online and there is a communication error. |
Alignment Errors | Displays the number of frames received that are not an integral number of octets in length. |
FCS Errors | Displays the number of frames received that do not pass the FCS check. |
Single Collisions | Displays the number of successfully transmitted frames that experienced exactly one collision. |
Multiple Collisions | Displays the number of successfully transmitted frames that experienced multiple collisions. |
SQE Test Errors | Displays the number of times an SQE test error message was generated. |
Deferred Transmissions | Displays the number of frames for which the first transmission attempt is delayed because the medium is busy. |
Late Collisions | Displays the number of times a collision is detected later than 512 bit-times into the transmission of a packet. |
Excessive Collisions | Displays the number of frames for which transmission fails due to excessive collisions. |
MAC Transmit Errors | Displays the number of frames for which transmission fails due to an internal MAC sub layer transmit error. |
MAC Receive Errors | Displays the number of frames for which reception on an interface fails due to an internal MAC sub layer receive error. |
Carrier Sense | Displays the number of times that the carrier sense condition was lost or never asserted when attempting to transmit a frame. |
Frame Too Long | Displays the number of frames received that exceed the maximum permitted frame size. |
Reset Counters | Click Reset Counter to cause the interface and media counter values on the module to set to zero and the values on the dialog box to update to the current counter values. The Reset Counter appears dimmed when offline or when online and a communication error occurs. |
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