Allen-Bradley SLC 500 Quick Start Manual page 39

Status field:
Commands sent
received
Replies sent
received
sent with error
received with error
timed out
Ethernet In Octets
Out Octets
In Packets
Out Packets
alignment errors
FCS errors
carrier sense errors
excessive collisions
excessive deferrals
MAC receive errors
MAC transmit errors
single collisions
multiple collisions
deferred transmission
late collisions
The diagnostic counter data displayed is stored in the diagnostic file
defined on the Ethernet channel 1 configuration screen.
Bytes: Displays the number of:
0-3 Commands sent by the channel.
4-7 Commands received by the channel.
8-11 Replies sent by the channel.
12-15 Replies received by the channel.
16-19 Replies containing errors sent by the channel.
20-23 Replies containing errors received by the channel.
24-27 Replies not received within the specified timeout period.
28-31 Octets received on the channel.
32-35 Octets sent on the channel.
36-39 Packets received on the channel, including broadcast packets.
40-43 Packets sent on the channel, including broadcast packets.
44-47 Frames received on the channel that are not an integral number of octets in length.
48-51 Frames received on the channel that do not pass the FCS check.
52-55 Times that the carrier sense condition was lost or never asserted while trying to transmit a
frame.
56-59 Frames for which a transmission fails due to excessive collisions.
60-63 Frames for which transmission is deferred for an excessive period of time.
64-67 Frames for which reception on an interface fails due to internal MAC sublayer receive error.
68-71 Frames for which reception on an interface fails due to internal MAC sublayer transmit error.
72-75 Successfully transmitted frames for which transmission was delayed because of collision.
76-79 Successfully transmitted frames for which transmission was delayed more than once
because of collision.
80-83 Frames for which the first transmission attempt is delayed because the medium is busy.
84-87 Times that a collision is detected later than 512 bit-times into the transmission of a packet.
Communicating on the Ethernet Network 4–9
Publication 1747-10.4