Date Code 20010518 Commands 5-13
SEL-2020 Instruction Manual
Add the BL parameter to the MAP command to receive bit label information if it is available.
The following example illustrates the BL parameter:
*>>MAP 2:TARGET BL<ENTER>
*>>MAP 2:TARGET BL<ENTER>*>>MAP 2:TARGET BL<ENTER>
*>>MAP 2:TARGET BL<ENTER>
Port 2, Data Region TARGET Map
Data Item Starting Address Type Bit Labels
_YEAR 4800h int
DAY_OF_YEAR 4801h int
TIME(ms) 4802h int[2]
TARGET 4804h char[9]
4804h INST A B C Q N RS LO
4805h 51P 50L 50H 51QP 50Q 51NP 50NL 50NH
4806h 51T 50LT 50C 51QT 50QT 51NT 50NLT 27
4807h 79RS 79CY 79LO 79SH 52AT 52BT IN6 IN5
4808h PDEM QDEM NDEM TF CF TCMA ST TRIP
4809h A B C D E F G H
480Ah J KT L V W X Y ZT
480Bh * * IN6 IN5 IN4 IN3 IN2 IN1
480Ch * TRIP CLOSE A1 A2 A3 A4 ALRM
*>>
The bit labels are listed in most-significant to least-significant bit order, the same as in SEL
relays. Bit labels are available in the GLOBAL, LOCAL, and TARGET (if not in archive)
regions.
MEM (Access Level 1)
The MEM command shows the status of all dynamically-allocated memory. This includes RAM,
where the database is stored; EEPROM, where string and SEL
OGIC Control Equation settings are
stored; and non-volatile Flash, where archive data are stored. The report indicates the number of
bytes of dynamic memory, the number of free (unused) bytes, the number of free blocks
(contiguous segments of unused memory), and the size of the largest free block. The following
screen shows a typical MEM report.
*>>MEM <ENTER>
*>>MEM <ENTER>*>>MEM <ENTER>
*>>MEM <ENTER>
Memory Total Bytes Blocks Largest block
type bytes free free available
RAM 334618 155490 2 151890
EEPROM 18308 14018 20 11516
FLASH 2097152 1081344 584 146176
*>>
You can use the free bytes and largest available block to determine if you are running out of
memory. The number of free blocks indicates how badly the memory is fragmented. The more
free blocks there are, the less efficiently the SEL-2020 can use the available free memory.
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