Schweitzer Engineering Laboratories SEL-2020 - Page 57

Date Code 20010518 General Description 2-19
SEL-2020 Instruction Manual
c) Verify the various metering quantities that are being collected and stored in the
SEL-2020 by issuing the command string MAP 1:METER or MAP 1:D1. The
SEL-2020 responds with a map of the specific data region, including a listing of the data
item names, the starting address for each data item, and the type of data stored at each
address.
*>>MAP 1:METER<ENTER>
MAP 1:METER<ENTER>MAP 1:METER<ENTER>
MAP 1:METER<ENTER>
Port 1, Data Region METER Map
Data Item Starting Address Type
_YEAR 2000h int
DAY_OF_YEAR 2001h int
TIME(ms) 2002h int[2]
IA(A) 2004h float[2]
IB(A) 2008h float[2]
IC(A) 200Ch float[2]
VA(V) 2010h float[2]
VB(V) 2014h float[2]
VC(V) 2018h float[2]
IAB(A) 201Ch float[2]
IBC(A) 2020h float[2]
ICA(A) 2024h float[2]
VAB(V) 2028h float[2]
VBC(V) 202Ch float[2]
VCA(V) 2030h float[2]
PA(MW) 2034h float
QA(MVAR) 2036h float
PB(MW) 2038h float
QB(MVAR) 203Ah float
PC(MW) 203Ch float
QC(MVAR) 203Eh float
P(MW) 2040h float
Q(MVAR) 2042h float
I0(A) 2044h float[2]
I1(A) 2048h float[2]
I2(A) 204Ch float[2]
V0(A) 2050h float[2]
V1(A) 2054h float[2]
V2(A) 2058h float[2]
*>>
Notice in this case that all of the currents and voltages contain two floating-point numbers,
one for magnitude, the other for phase angle. The magnitudes and phase angles are
calculated from Fast Meter sample data. ASCII data includes only voltage and current
magnitude.
d) View the data stored in the Port 1 METER data region by issuing the command string
VIEW 1:METER or VIEW 1:D1. The SEL-2020 responds with a data “dump”
showing the data stored in the data region at the time of the request with the respective
data item labels. In this example, the data in this data region are updated once each
second.