DNP3 counter objects (object type 20) are derived from the relay's IEC 61850 object class BCR. For each counter, there is also a frozen counter value available for reading as object type 21.
There are two types of counters in the relay.
- BCR class is an integrated totals type counter, typically used for energy values.
- INC class counters are operational counters, for example, circuit breaker control counters.
The DNP3 Counter, and Frozen Counter event buffer size is 30.