how to read actice power and apparent power value on ADE7763

The energy registers are signed  16775234  = FFF842 hex (-1982) this is a negative value your inputs are 180 deg out of phase. Swap the current channel leads from the discovery2.

Dave

tks for replying, i'm really appreciated

I did as u said and then i got the result as below : 

input = 500mV (both channel 1 and 2) --> P = 12363, S = 20747

is it normal value? 

as i read in datasheet, maximum ActivePower value is 838861(0xCCCCD), and 708693(0xAD055) with ApparentPower.

tks for your replying.

im applying 500mV Peak and got  P = 12363, S = 20747

what i have to do now?

i have the same issue with ThuDuc, can u tell me where am i wrong?

Can you measure with a multimeter the adc inputs of the ADE7763 at the part. 

With 500mvpk you should get 353.5mVRMS 

Are you adding a phase shift between V and I? 

Can you measure from Vip to gnd and V1n to gnd measure the dc value with you ac signal present.

Dave

1.with 500mVpk, i used multimeter to measure the adc inputs of the ADE7763 then i got 0.353Vrms both channel 1 and 2.

2.phase shift between V and i is 0.

3. multimeter DC range : V1p-gnd= 136mV, V1n-gnd= 138mV.

multimeter AC range : V1p-gnd= 0.353V, V1n-gnd= 0.002V 

Hope to hear from you soon.

3. multimeter DC range : V1p-gnd= 136mV, V1n-gnd= 138mV.

This dc offset may be causing a problem. You can try capacitively coupling the signal from the discovery board or get a source with no dc offset. 

Dave

i have tried  capacitively coupling the signal from the discovery board but nothing changes, P and S still the same as before capacitively coupling the signal.
for some reason, i dont have others AC generator except Analog Discovery 2.
do u have any others idea?? i have no idea now :(((

can i ask? What is the value of the LINECYC register when the active power and apparent power reaches 838861, 708693.
as i know the more LINECYC the more active, apparent power i will get.
for example , i set LINECYC register is 100(~1second) i got P = 18038, S = 20756
LINECYC register is 1000(~10second) i got P = 175657, S = 202059.

Based on the numbers you have 

838861/(175657/1000) = 4775.56 lincycles 

the power factor of the values shown is 175657/202059 = 0.869

but for your target 838861/708693 = 1.1836   ??? above one.

if you invert the values 708693/838861  = 0.84482 

for active to get to 708693/(175657/1000) = 4,034.52 cycles

Dave

i mean on datasheet was wrote that ActivePower max value is 838861(0xCCCCD), and 708693(0xAD055) with Apparent Power.
i want to ask to get those values how many LINECYC have been set?

" ActivePower max value is 838861(0xCCCCD), and 708693(0xAD055) with Apparent Power." 

These are powers not energies these values represent the average power with full-scale inputs.

This number is accumulated each sample into the energy accumulation register.  So you can't get this number using line cycle accumulation. 

Active power can be read using the waveform register configured using the MODE register. Reactive and VA powers are not available to the user only the accumulated energy values

" ActivePower max value is 838861(0xCCCCD), and 708693(0xAD055) with Apparent Power." 

These are powers not energies these values represent the average power with full-scale inputs.

This number is accumulated each sample into the energy accumulation register.  So you can't get this number using line cycle accumulation. 

Active power can be read using the waveform register configured using the MODE register. Reactive and VA powers are not available to the user only the accumulated energy values