Rockwell Automation 1785-ENET USER MANUAL PLC-5 ETHERNET INTERFACE - Manual (Page 34)

1785-6.5.19 November 1998
4-4 Communicating via the Interface Module
Monitoring Ethernet Status Data Monitor the status of communication through the PLC-5 Ethernet
interface module by accessing the Ethernet Channel 3A status screen.
The diagnostic counter data displayed is stored in the diagnostics file
you defined on the Ethernet Channel 3A configuration screen (see
page 3-3).
Be sure you have assigned a diagnostics file before
you try to monitor channel 3A. See page 3-4.
Status field: Bytes: Displays the number of:
Commands sent 0-3 Commands sent by the channel
received 4-7 Commands received by the channel
Replies sent 8-11 Replies sent by the channel
received 12-15 Replies received by the channel
sent with error 16-19 Replies containing errors sent by the channel
received with error 20-23 Replies containing errors received by the channel
timed out 24-27 Replies not received within the specified timeout period
Ethernet in octets 28-31 Octets received on the channel
out octets 32-35 Octets sent on the channel
in packets 36-39 Packets received on the channel, including broadcast packets
out packets 40-43 Packets sent on the channel, including broadcast packets
alignment errors 44-47 Frames received on the channel that are not an integral number of octets
in length
FCS errors 48-51 Frames received on the channel that do not pass the FCS check
carrier sense errors 52-55 Times that the carrier sense condition was lost or never asserted while
trying to transmit a frame
excessive collisions 56-59 Frames for which a transmission fails due to excessive collisions
excessive deferrals 60-63 Frames for which a transmission is deferred for an excessive period of
time
MAC receive errors 64-67 Frames for which reception on an interface fails due to internal MAC
sublayer receive error
MAC transmit errors 68-71 Frames for which reception on an interface fails due to internal MAC
sublayer transmission error
single collisions 72-75 Successfully transmitted frames for which transmission was delayed
because of collision
multiple collisions 76-79 Successfully transmitted frames for which transmission was delayed more
than once because of collision
deferred transmissions 80-83 Frames for which the first transmission attempt is delayed because the
medium is busy
late collisions 84-87 Times that a collision is detected later than 512 bit-times into the
transmission of a packet