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ADE7816 Line Cycle accumulation and Active/Reactive Energy

Question asked by ajit5wadekar on Sep 24, 2015
Latest reply on Oct 6, 2015 by dlath

Hi,

 

I am trying to use Line Cycle Accumulation Mode for Active/Reactive Energy Calibration and Establishing Wh/LSB constant.

Here I have followed these steps:

 

1) LOCK the ADE7816 in SPI Model (I have verified communication).

2) Initialize basic register as per datasheet. (Page16)

3) Current Channel Gain Matching Registers Set

4) Initialize Line Cycle Accumulation Mode (i.e. Address=0xE702  Data=0x0B ; Address=0xE60C  Data=0x1773)

     a) I have Initialized RSTREAD : 0, ZX_SEL : 1, LVAR : 1, LWATT : 1 in LCYCMODE registers.

     b) Then I have added value 0x1773 in  LINECYC register, this approx. 1 minute time duration.
5) And then started the DSP

 

Once this is done I check STATUS0 register for LENERGY Flag. Initially i.e. during boot I get a proper time duration of 1 minute and I was able to read the xWATTHR and xVARHR registers. Once read these register have values of zero and the value remains zero until next reboot/reset.Also the LENERGY Flag remains high even if it is Initialized to zero.

 

Here do I need to do software reset every time I read the xWATTHR and xVARHR register?

 

Regards,

Ajit Wadekar

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