Ref ID : ADR233B/IM/CS
Rev No. : 05
ADR233B
7.3.6 Cyclic Measurements
The device will produce measured values using ASDU 3, ASDU 9 & ASDU244. ASDU3 is
reported with information number 147, ASDU9 is reported with information number 148 and
ASDU244 is reported with function type 127 and information number 0. These three frames are
reported alternately. This can be read from the device using a Class 2 poll. For every query the
current online data is reported.
The device transmits its measurands at 1.2 times the rated value of the analogue value.
7.3.7 Commands
A list of the supported commands is contained in the section 7.2.9 Protocol Mapping (Sr. No.8).
The device will respond to valid Control Command with ASDU1 and a cause of transmission
indicating ‘Positive (COT-20) / Negative (COT-21) acknowledgement’. The device will respond
to commands with invalid FUN/ INF combination with an ASDU 1, with a cause of transmission
indicating ‘negative acknowledgement’.
7.3.8 Disturbance Records
The disturbance records are stored in uncompressed format and can be extracted using the
standard mechanisms described in IEC 60870-5-103.This relay supports up-to 5 records.
7.3.9 Protocol Mapping:
Sr. No. INF Description GI TYP COT FUN
Note: X under GI heading means DI Status is included in General Interrogation response.
Sr. No. INF Description GI TYP COT FUN
2 Semantics of INFORMATION NUMBER : Status Indications in monitor direction
223 Trip LED status X 1 1,7,9,11,12,20,21 124
18 PROT Active X 1 9,11 127
145 Relay Error X 1 9,11 127
1 Semantics of INFORMATION NUMBER : System Functions in monitor direction
0 End of general interrogation - 8 10 255
0 Time synchronization - 6 8 255
2 Reset FCB - 5 3 176
3 Reset CU - 5 4 176
4 Start/Restart - 5 5 176
5 Power on - 5 6 176
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