IEC 62351-6-2020 pdf free download

IEC 62351-6-2020 pdf free download.Power systems management and associated information exchange — Data and communication security — Part 6: Security for IEC 61850.
For smpMod=SmpPerPeriod:
expNxtPk = ((n0ASDU/smpRate)/(nominal frequency)) * 2
Expiration of the timer cause a transition to a state that may add an addition delay to the actual declaration that a multicast subscription loss.
The Association Loss timeout shall also be reset to a locally determined value.
7) The supervision information shall be updated based upon the new packet information received. See 6.2.1.4 for processing requirements.
Once the supervision information has been updated, a transition to State 8 shall occur.
8) If subscribed for SV packet is received, the state shall transition to State 3.
The local multicast association loss detection timer shall be started when the state is entered from a state other than state 8. If the timer expires, there shall be a transition to State 11.
9) The supervision information shall be updated based upon the security check failure information received. See Clause 6.2.2.3.3 for processing requirements.
Once the supervision information has been updated, a transition to State 8 shall occur.
10) The supervision information shall be updated based upon the replay detection information. See Clause 6.2.2.3.3 for processing requirements.
Once the supervision information has been updated, a transition to State 8 shall occur.
11)This state is used to determine when a subscription is no longer active. It differs from the packet loss detection in that it is a local issue. Upon detection of lost subscription, the state shall transition to State 12.
If a subscribed for SVmessage is received, the state shall transition to State 3.
12) The application shall be updated such that it is aware that the subscription is no longer valid. The means through which this is performed is a local issue.
After the application is updated, the state shall transition to State 13.
13) The supervision information shall be updated based upon the loss of an active subscription (e.g. LSVS.St shall change state). See Clause 6.2.2.3.3 for processing requirements.IEC 62351-6-2020 pdf free download.