GE Multilin MIB, Инструкция по эксплуатации

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GEK-106426B MIB High Impedance Bus Differntial Relay A-13
APPENDIX A A.5 EVENTS
A
A.5EVENTS
Events reading operation consists of four steps:
1. Read the number of events recorded since the last event deletion. This number is stored in the memory position
labeled “All events”. See following table to find out this address for each MIB module.
2. Send an Open Events command (in a similar way as for operation selection). The code to open events is 13H.
3. Read the events. The event buffer starting address and length are defined in the memory map of each module.
See attached table for a reference.
4. Close Events window. This operation is similar to command confirmation. The code to close events is 14H. In
the same operation it is possible to delete some of the events. The number of events to delete must be specified
in the 4
th
register sent in the frame (if no event has to be deleted, send this 4
th
register with value zero, 0000H).
Deleting events is a good way to confirm that an event is not read twice.
The size of each stored event will be different depending on the module type, and the memory addresses of registers and
buffers may also vary with the firmware version as detailed in the following table. The addresses shown are only
orientative as they can change with module and firmware version. Check the actual memory map of every module with
EnerVista MII Setup program to ensure that the addresses used are the correct ones.
MODULE MIB
Firmware version 1.00
“All Events” 046E
“All Events buffer” 04A4
Length of event buffer 768
Event size (bytes) 32
Max. number of events 24