Logical nodes for generic references............................................. 215
Generic automatic process control GAPC.................................215
Generic process I/O GGIO........................................................ 216
Logical nodes for metering and measurement............................... 228
Metering MMTR.........................................................................228
Measurement MMXU.................................................................233
Harmonic measurement MHAI.................................................. 245
Sequence and imbalance MSQI................................................260
Logical nodes for sensors and monitoring......................................264
Circuit breaker monitoring SCBR.............................................. 264
Tap changer supervision SLTC.................................................269
Operation time counter SOPT................................................... 270
Hot-spot and ageing rate monitoring SPTR...............................272
Logical nodes for switchgear.......................................................... 274
Circuit breaker XCBR................................................................ 274
Switch XSWI..............................................................................277
Logical nodes for further power system equipment........................279
Battery ZBAT.............................................................................279
Logical nodes for power quality events.......................................... 280
Voltage variation QVVR.............................................................280
Voltage unbalance variation QVUB...........................................288
Section 8 Glossary....................................................................... 293
Table of contents
630 series
3
Communication Protocol Manual