Rockwell Automation 1785-ENET PLC-5 Ethernet Interface Module Installation Instructions - Manual (Page 27)

PLC-5 Ethernet Interface Module 27
Publication 1785-IN019B-EN-P - January 2007
Monitor Ethernet Status Data
Monitor communication status through the module by accessing the Ethernet Channel 3A
status dialog.
Ethernet Status Data
Use the Message Instruction
The message (MSG) instruction transfers up to 1000 elements of data; the size of each
element depends on the data table section that you specify and the type of message command
that you use. One binary element contains one 16-bit word, for example, and one
floating-point element contains two 16-bit words.
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