ABB Relion 620 Series, Protocol Manual

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easiest way to detect the duplication is to check the sequence number of the event
records. The sequence numbers remain similar to the duplicated event records.
Extended event record structure
The extended register addresses are 49250 and 49263-49361.
Table 34: Extended event record structure with the maximum of 10 event records
Address Register Values Description
49250 Num of records 1...10 Write: Number of Event
structures
49251 Selection Write: Selection code
49252 Sequence Number 1
Event record 1
49253 Unread records left 1
49254 TimeStamp 1
49255 TimeStamp 1
49256 TimeStamp 1
49257 TimeStamp 1
49258 Event Type 1
49259 Data Object Id 1_1
49260 Data Object Id 2_1
49261 Data Value 1
49262 Data Value 1
49263 Sequence Number 2
Event record 2
49264 Unread records left 2
49265 TimeStamp 2
49266 TimeStamp 2
49267 TimeStamp 2
49268 TimeStamp 2
49269 Event Type 2
49270 Data Object Id 1_2
49271 Data Object Id 2_2
49272 Data Value 2
49273 Data Value 2
49274 Sequence Number 3 Event record 3
: : : :
49285 Sequence Number 4 Event record 4
: : : :
49296 Sequence Number 5 Event record 5
: : : :
49307 Sequence Number 6 Event record 6
: : : :
49318 Sequence Number 7 Event record 7
Table continues on next page
1MRS757645 B
Section 3
Vendor-specific implementation
620 series 55
Communication Protocol Manual