9-10 Database Date Code 20010518
SEL-2020 Instruction Manual
event reports are received. This allows the database to maintain the type and location of the
initial fault.
Table 9.5: Local Data Region
Starting
Address
Data Item Label
Data
Type
Notes
0800h PORT_STATUS int Read-only. See Port Status Register
subsection following this table.
0801h ALT_PORT int Port number this port is in transparent
communications with; 255 if not
transparently connected; read-only.
0802h NUM_MESGS int #Messages Received. Reset when port reset,
port inactive, or count exceeds 32767; read-
only.
0803h BAD_MESGS int #Bad Messages Received. Reset when
previous item reset; read-only.
0804h ARCHIVE_CNTRS int[3] Number of records in each archive region;
read-only.
0807h ELEMENTS char[18] Read-only. See Local Elements subsection
following this table.
0819h SBO_REGS char[4] Must write AAh then 55h to this register
within 1 second to pulse SEL
OGIC Control
Equations bit (SB01 through SB04 Table
9.7).
081Dh COMMAND_REG char Number (1 through 8) of command bit
(CMDx) to set; write-only.
081Eh CLR_ARCH_REG int Write FE01h, FD02h, or FC03h to clear
record in archive regions 1-3, respectively.
CAUTION
!
Frequent archive record clearing may exceed EEPROM
capabilities. See the discussion in the Archive Data
Region subsection of Section 9: Database.
081Fh FID char[80] FID string of attached SEL IED.
086Fh PORTID char[41] Port ID setting.
0898h EVENT_COUNT char Number of unread event reports. See
20EVENT Features subsection in Section 8:
Message Strings for more information.
0899h FAULT_LOC float Most recent fault location. Applies only
when User-Defined Commands (SET U)
include CMDn = 20EVENT or CMDn =
20EVENTQ.
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