ABB Rellon 620 Series, Руководство по протоколу связи

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1MAC306892-MB C
Section 3
Vendor-specific implementation
RER620 21
Communication Protocol Manual
3.6.14 Event time
• Local
• UTC (default)
The setting selects between the time stamp modes for event reporting.
3.6.15 Overflow mode
• Indication (default)
• Keep newest
The setting defines the handling of the event buffer overflow situation. In the oldest

+indication mode, the protective relay discards the newest events to protect the older ones.
In that mode, the protective relay generates an overflow indication event. The keep newest
mode is added for compatibility for the systems that prefer latest information. In that case,
the oldest events in the buffer are discarded.
3.6.16 OvInd IOA
• Min: 0
• Max: 255/65535/16777215
• Default: 60000
The protective relay generates an overflow indication event with this address if the lost
event is included in any of the interrogation groups. Based on this information, the client
requests for interrogation to get the latest momentary values.
• If OvInd IOA is set to 0, the overflow indication is disabled for the points that are part
of some interrogation groups.
• If OvInd IOA is set to the same value as OvInd NoGI IOA , only one indication event
is generated regardless whether the point is included in the interrogation group or not.
• The maximum value depends on the IOA length setting.
Select the time format which is supported by the client.
Applicable only if Overflow mode is set to "Indication".