I have been working with atm90e26 interfaced with arduino the factors for voltage,current,power are calibrated and all values I am getting accurate the measured values are compared with standard meter and everything seems fine but,the energy registers give values zero and no cf pulse output also I doubt if my circuit is improper(because all I have followed from application note. And I am doing CT based energy measurement) because all values except energy are proper.
The PL_constant high and low is also made zero so that some accumulation if energy takes place but,at that time ic's o/p's fixed constant 3-4 different values all the time for all energy related registers,
Can someone help me in this regard as why is this happening?
I replaced the IC still same problem.
I have placed isolation IC and checked but, no improvement.