Rockwell Automation 9220-WINTA ControlNet Traffic Analyzer Reference Manual - Manual (Page 77)

Publication 9220-052C-EN-P - August 2002
Chapter
8
Troubleshooting
What This Chapter Contains This chapter helps you troubleshoot the Traffic Analyzer tool.
The following table describes what this chapter contains and
where to find specific information.
Warning Messages You may receive one or two warning boxes called Data Capture
Missing Traffic at the end of a record before frames are displayed
in MAC Frame Data view. If you receive one of these warnings,
it means that one or more times during the record, the Traffic
Analyzer tool was unable to receive all the MAC frames from the
network. The Traffic Analyzer tool may lose MAC frames
because of three situations:
•
overflow/underflow FIFO error in the ControlNet ASIC
•
the personal computer is unable to unload all the received
data
•
overflow error in the ControlNet Traffic Analyzer internal
buffer
Each of these situations is described below.
Overflow/Underflow FIFO
Error in the ControlNet ASIC You see the following warning when this condition occurs:
To troubleshoot the warning condition: See page
overflow/underflow FIFO error in the ControlNet ASIC 8-1
the personal computer is not able to unload all the received data 8-2
overflow error in the ControlNet Traffic Analyzer internal buffer
8-5