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vacon • 160
EtherNet/IP
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Instance Attribute “Media Counters”
The attribute is a collection of counters related to the Ethernet physical interface.
Instance Attribute “Interface Type”
The attribute indicates the type of the Ethernet interface, i.e. twisted-pair cable, optical fiber,
device-internal and so on. Value "twisted-pair cable" (2) is always returned.
Instance Attribute “Interface State”
The attribute indicates the current state of the Ethernet interface, i.e. operational, disabled etc.
Table 127. Media counters
Field name
Data type
Description
Alignment Errors
UDINT
Frames received that are not an integral number of
octets in length.
FCS Errors
UDINT
Frames received that do not pass the FCS check.
Single Collisions
UDINT
Successfully transmitted frames which experienced
exactly one collision.
Multiple Collisions
UDINT
Successfully transmitted frames which experienced
more than one collision.
SQE Test Errors
UDINT
The number of times SQE test error message is
generated.
Deferred Transmis-
sions
UDINT
Frames for which the first transmission attempt is
delayed because the medium is busy.
Late Collisions
UDINT
Number of times a collision is detected later than
512 bit-times into the transmission of a packet.
Excessive Collisions
UDINT
Frames for which transmission fails due to exces-
sive collisions.
MAC Transmit Errors
UDINT
Frames for which transmission fails due to an inter-
nal MAC sub layer transmit error.
Carrier Sense Errors
UDINT
Times that the carrier sense condition was lost or
never asserted when attempting to transmit a
frame.
Frame Too Long
UDINT
Frames received that exceed the maximum permit-
ted enclosure size.
MAC Receive Errors
UDINT
Frames for which reception on an interface fails due
to an internal MAC sub layer receive error.
Table 128. Interface state
Value
Interface state
0
Unknown interface state
1
The interface is enabled and is ready to send
and receive data
2
The interface is disabled
3
The interface is testing
4-255
Reserved
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