Rockwell Automation 1763-L16xxx MicroLogix 1100 Embedded Web Server User Manual - Manual (Page 25)

Rockwell Automation Publication 1763-UM002D-EN-P - May 2014 19
Monitor Diagnostics Chapter 4
Carrier Sense Errors Times that the carrier sense condition was lost or never asserted when attempting to transmit
a frame
MAC Receive Errors Frames for which reception on the Ethernet interface failed due to an internal MAC sublayer
receive error
CRC Errors Frames for which CRC error is detected
This field Specifies