ADE7758 Problem with Watt Gain Calibration

Hello Everyone,

I am facing problem while calibrating watt. My VRMS = 225.91 and IRMS = 0.332. The problems occur with WattHr and VAHr ragisters. The values are as followed

AWATTHR = 64685  & AVAHR = 46

BWATTHR = 63976 & BVAHR = 1602

CWATTHR = 1565 & CVAHR = 1602

Next is the steps i am using for calibrating

1. Clearing Watt Gain, VAR Gain and VA Gain

2. Selecting phase in MMODE reg

3. Writing LCYCMODE = 0xBF

4. Writing LINECYC = 0x800

5. Setting LENEGRY Bit

6. Reset interrupt status register

7. Reading AWATTHR,BWATTHR,CWATTHR and AVAHR, BVAHR, CVAHR.

8. My accumulation time is 6.8s

9. Using formul 60. My watthr ecpected is 510.0085

What do i need to do further?? Please check the AWATTHR,BWATTHR,CWATTHR,AVAHR,BVAHR & CVAHR register values. Is the values are correct.?? Check the steps for any errors.

Help me to calculate energy.

Regards