Common Industrial Objects implemented by vacon® 100 family vacon • 35
24-hour support +358 (0)201 212 575 • Email: vacon@vacon.com
7
Instance Attribute "Last Conflict Detected"
This attribute contains information of the last IP address conflict. The content of this attribute can
be resetted by writing zero to this attribute.
The struct member "ACD Activity" tells the state of ACD algorithm when the last conflict was
detected. Possible values are defined in the table below.
The struct member "Remote MAC" tells the MAC address the source of the last IP address conflict.
The struct member "ARP PDU" contains the ARP message (raw copy) received from the source of
the IP address conflict. Content of the ARP message is described in the table below.
Instance Attribute “Encapsulation Inactivity Timeout”
The Encapsulation Inactivity Timeout attribute is used to enable the TCP socket cleanup (closing)
when the defined number of seconds have elapsed with no Encapsulation activity. The default value
is 120 seconds. The TCP keep-alive traffic does not count as Encapsulation activity.
Table 20. ACD Activity values
Value ACD Mode Description
0
No conflict detected
(default)
No conflict has been detected since this attribute was
last cleared.
1 Probe IPV4 address Last conflict detected during IPV4 address probe state
2Ongoing detection
Last conflict detected during OngoingDetection-state
or subsequent DefendWithPolicyB state
3 Semi active probe
Last conflict detected furint SemiActiveProbe-state or
subsequent DefendWithPolicyB-state
Table 21. The ARP PDU in binary format
Field size
(bytes)
Field Description
2 Hardware type (1 for Ethernet HW)
2Protocol type (0x800 for IP)
1 Hardware size (6 for Ethernet HW)
1 Protocol size (4 for IP)
2
Operation code (1 for request or 2 for
response)
6 Sender MAC address
4 Sender IP address
6 Target MAC address
4 Target IP address
To Next Page
Loading...
Need help?
General
