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Marathon Electric (a division of RBC Manufacturing Corp.) reserves the right to change specications and this manual without notice.
Revised 06/2011
OUTBOUND MESSAGES FROM DVR
®
2000E+
GENERATOR AVERAGE VOLTAGE AND CURRENT (GENERATOR OUTPUT) – This message contains average
generator line voltage and phase current at the generator output after possible step-up from potential and current
transformers.
Message ID (0xFF19) – Generator Average Voltage and Current (Generator Output)
Source: DVR
®
2000E+
Message Group: Metering
PDU Format: 255 (PDU2)
PDU Specific: 25
BYTE 0 BYTE 1 BYTE 2 BYTE 3 BYTE 4 BYTE 5 BYTE 6 BYTE 7
Avg RMS
Current
(LSB)
Avg RMS
Current
(MSB)
Avg RMS
Voltage
(LSB)
Avg RMS
Voltage
(MSB)
PT Ratio
Scalar
(LSB)
PT Ratio
Scalar
(MSB)
PT Ratio
Exp
Unused
0x?? 0x?? 0x?? 0x?? 0xFF 0x?? 0x?? 0xFF
Byte 0 Average RMS Current (LSB) – this is the Least Significant Byte of the average
three-phase root-mean-square current. (1 bit = 1 Arms)
Byte 1 Average RMS Current (MSB) – this is the Most Significant Byte of the average
three-phase root-mean-square current (1 bit = 1 Arms)
Byte 2 Average Line-to-Line RMS Voltage (LSB) – this is the Least Significant Byte of the
average of all three line-to-line voltages. (see Voltage Units in message 0xFF1B for
scaling)
Byte 3 Average Line-to-Line RMS Voltage (MSB) – this is the Most Significant Byte of the
average of all three line-to-line voltages. (see Voltage Units in message 0xFF1B for
scaling)
Byte 4-6 PT Ratio – these three bytes comprise the potential transformer ratio as a fixed-point
number. The PT ratio is calculated as: Scalar*2^(-Exp) where Scalar is a 16-bit
word with LSB and MSB given by bytes 4 and 5 and the exponent is given by byte
6. See Message 0xFF39 For a similar representation of the CT Ratio
Byte 7 Unused
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