4-36 “Job Done” Examples - (Example 3) Date Code 20010518
SEL-2020 Instruction Manual
(MAP1:METER continued from previous page)
I2(A) 204Ch float[2]
V0(V) 2050h float[2]
V1(V) 2054h float[2]
V2(V) 2058h float[2]
*>>
Examine collected meter data using the VIEW command.
You should see a screen similar to the following:
*>>VIEW 1:METER <ENTER>
VIEW 1:METER <ENTER>VIEW 1:METER <ENTER>
VIEW 1:METER <ENTER>
Port 1, Data Region METER Data
_YEAR = 1995 DAY_OF_YEAR = 1 (01/01) TIME = 01:59:37.859
IA(A) = 2374.623, 102.078 IB(A) = 2353.747, -17.810
IC(A) = 2369.258, -137.949 VA(V) = 11278.516, 103.606
VB(V) = 11289.020, -16.545 VC(V) = 11270.235, -136.424
IAB(A) = 4092.593, 131.987 IBC(A) = 4093.101, 12.229
ICA(A) = 4107.771, -107.898 VAB(V) = 19558.934, 133.546
VBC(V) = 19524.914, 13.488 VCA(V) = 19524.873, -106.397
PA(MW) = 26.773 QA(MVAR) = 0.714 PB(MW) = 26.565
QB(MVAR) = 0.587 PC(MW) = 26.693 QC(MVAR) = 0.711
P(MW) = 80.030 Q(MVAR) = 2.012 I0(A) = 7.170, 135.000
I1(A) = 2365.875, 102.106 I2(A) = 5.750, 40.418
V0(V) = 7.299, -80.537 V1(V) = 11279.251, 103.546
V2(V) = 13.106, 163.608
*>>
3. Verify that the SEL-2020 will respond to the user-defined “GETDAT” command with the
proper meter data from all seven ports. Use a terminal to send the GETDAT messages to
Port 11 on the SEL-2020.
*>>GETDAT<ENTER>
GETDAT<ENTER>GETDAT<ENTER>
GETDAT<ENTER>
*>>593.91,12013.22,598.34,12111.33,587.96,12131.22,597.65,12045.34,601.43,12011.34,596.12,12102.33,5
95.11,12045.52
*>>
In the screen above, the GETDAT response is a message consisting of an ASCII string of 14
numbers. The first number is the A-phase Amps for Port 1, the second the A-phase Volts for
Port 1. Similarly, there are six more pairs of readings for the other six relays.
Now, you must program the RTU to send the GETDAT command whenever it wants an
update of the meter information and to interpret the comma-delimited data stream it receives
in response. This example shows the user-defined command and the response string as
ASCII messages. You may also define binary user-defined commands. See Section 8:
Message Strings for more detailed information about requesting other data formats.
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