Rockwell Automation 9220-WINTA ControlNet Traffic Analyzer Reference Manual - Manual (Page 53)

Publication 9220-052C-EN-P - August 2002
Display Information 5-3
MAC Frames
MAC Frame data is displayed in hexadecimal, plain information with
no separation between each other. The MAC Frame data format is
shown below.
Between two LPackets, the CNA10 ASIC adds two bytes, which are
shown only in the hexadecimal display. Use the following table of
CNA10 ASIC tag index and description to interpret these two bytes.
Please note that bad MAC Frames are always displayed in the MAC
Frame format. An example is shown below with the LPacket tag index
underlined.
LPackets
Data is displayed in hexadecimal but the different LPackets are
separated from one another. A small arrow on the left side of the text
indicates a new LPacket is starting. The LPacket data format is shown
below.
CNA10 Tag Index Description
sm, 0xF8 LPacket from the NAP port
sm, 0xF9 Scheduled LPacket from the wire
sm, 0xFA Unscheduled LPacket from the wire
sm, 0xFB Moderator LPacket from the wire
Note: sm = Source MAC ID