GE EPM 6000 Multi-function Power Metering System instruction manual DNP Point Map Notes

CHAPTER 5: COMMUNICATIONS

5.2.2DNP Point Map Notes

1.Responds to Function 5 (direct operate), Qualifier Code 7 or 8, Control Code 3, Count 0, On 1 ms, Off 0 ms ONLY.

2.Responds to Function 6 (direct operate - no acknowledge), Qualifier Code 7, Control Code 3, Count 0, On 1 ms, Off 0 ms ONLY.

3.The multiplier = 10(n–d), where n and d are derived from the energy format. n = 0, 3, or 6 per energy format scale and d = number of decimal places.

4.Example: If energy format = 7.2 K and watt-hours counter = 1234567, with n=3 (k- scale) and d = 2 (2 digits after decimal point), then multiplier = 10(3–2)= 10, so the energy is 1234567 × 10 Wh, or 12345.67 kWh.

5.Values greater than 150 V secondary read 32767.

6.Values greater than 300 V secondary read 32767.

7.Values greater than 10 A secondary read 32767. For the 1 A model, the multiplier is (2/ 32768) and values above 2 A secondary read 32767.

8.CT ratio = (numerator × multiplier) / denominator.

9.PT ratio = (numerator × multiplier) / denominator.

10.Clear via Function 2 (write), Qualifier Code 0.

5–12 EPM 6000 MULTI-FUNCTION POWER METERING SYSTEM – USER GUIDE