E6581581
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4.11. Ethernet link (F6 hex)
Class code 0xF6: The Ethernet Link Object maintains link-specific counters and status
information for a Ethernet 802.3 communications interface.
Class Attributes available
Instance Attribute ID Access Name Data type Value
1 Get Revision UINT
3
2 Get Max Instances UINT
2
3 Get Number of Instances UINT
2
6 Get Max ID of class attributes UINT
7
0
7 Get Max ID of instance attribute UINT
10
Instance 1 and 2 Attribute available
Instance Attribute ID Access Name Data type Details
1 Get Interface Speed UDINT Interface speed currently in use
0 : indeterminate (Autobaudrate)
10: 10Mbps
100: 100Mbps
2 Get Interface Flags DWORD Bit 0 : Link Status Indicates whether or not the
Ethernet 802.3 communications interface
is connected to an active network. 0
indicates an inactive link; 1 indicates an
active link.
Bit 1 : Half/Full Duplex Indicates the duplex
mode currently in use.
0 indicates the interface is running half
duplex;
1 indicates full duplex.
Bit 2-4 : Negotiation Status
0 = Auto-negotiation in progress.
1 = Auto-negotiation and speed
detection failed.
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.
Bit 5 : Manual Setting Requires Reset.
0 indicates the interface can activate
changes to link parameters
(auto-negotiate, duplex mode, interface
speed) automatically. 1 indicates the
device requires a Reset service be
issued to its Identity Object in order for
the changes to take effect.
Bit 6: Local Hardware Fault. 0 indicates the
interface detects no local hardware fault; 1
indicates a local hardware fault is
detected. The meaning of this is
product-specific.
Bit 7-31 Reserved Shall be set to zero
3 Get Physical Address ARRAY
of 6
USINTs
MAC layer address
Interface Control STRUCT
of:
Force auto negotiate, duplex half/ full and speed
10/ 100
Control Bits WORD Interface Control Bits
bit0 = Auto-Negotiated Enabled
bit1 = Duplex Full Enabled
1
6 Get/Set
Forced Interface
Speed
UINT Speed at which the interface shall be forced to
operate speed 10 or 100
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