9
vacon • 158 EtherNet/IP
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9.2.1.5.1. INSTANCE ATTRIBUTES
Instance Attribute “Interface Speed”
The attribute reveals the currently used speed in the interface. The speed is announced as an
integer number, with the unit Mbps, e.g. 0, 10, 100 etc. The value 0 indicates that the interface speed
is indeterminate.
Instance Attribute “Interface Flags”
The attribute contains status and configuration information about the physical interface.
Instance Attribute “Physical Address”
The attribute reveals the MAC layer address of the physical interface.
Instance
Services
Id Name Description
1 Get_Attributes_All
Returns content of all (implemented)
attributes in the instance
14
d
0E
h
Get_Attribute_Single Used to read single attribute value
16
d
10
h
Set_Attribute_Single Used to write a single attribute value.
76
d
4C
h
Get_and_Clear
Gets then clears the specified attribute
(Interface Counters, Media Counters).
Not instance/class dependent service.
Table 125. Interface flag bit descriptions
Bit(s) Called Definition
0 Link Status One, if link is active
1 Half/Full Duplex One, if full duplex
2-4
Negotiation Sta-
tus
Value Definition
0 Auto-negotiation in progress
1
Auto-negotiation and speed detection
failed. Using default values for speed
and duplex.
2
Auto-negotiation failed but detected
speed. Duplex was defaulted.
3
Successfully negotiated speed and
duplex.
4
Auto-negotiation not attempted. Forced
speed and duplex.
5
Manual Setting
Requires Reset
0 indicates the interface can automatically activate
changes to link parameters (auto-negotiate, duplex
mode, interface speed). 1 indicates the device
requires a Reset service be issued to its Identity
Object in order for the changes to take effect.
6
Local Hardware
Fault
0 indicates the interface detects no local hardware
fault; 1 indicates a local hardware fault is detected.
7-31 Reserved Always zero
Table 124. Ethernet Link Object
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