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//energy
function read_active_power()
h=open_serial(1,2,9600)
//for x=1:5
arr=[ascii(01) ascii(03) ascii(15) ascii(78) ascii(00) ascii(02) ascii(167) ascii(08)];
asc1=ascii(01) + ascii(03) + ascii(15) + ascii(78) + ascii(00) + ascii(02) + ascii(167) + ascii(08);
write_serial(1,asc1,8);
buf=read_serial(1,11)
sleep(1000)
//end
b1=0;b2=0;b3=0;b4=0;
myresult=ascii(buf)
a1=myresult(5); if(a1<16) then b1=1; end; a1=dec2hex(a1); if(b1) then a1= '0'+string(a1); end;
a2=myresult(6);if(a2<16) then b2=1; end; a2=(dec2hex(a2)); if(b2) then a2= '0'+string(a2); end;
a3=myresult(7);if(a3<16) then b3=1; end; a3=(dec2hex(a3)); if(b3) then a3= '0'+string(a3); end;
a4=myresult(8);if(a4<16) then b4=1; end; a4=(dec2hex(a4)); if(b4) then a4= '0'+string(a4); end;
a5=[a3,a4,a1,a2];
a6=strcat(a5)
//a6=a2+256*a1+256*256*a4+256*256*256*a3
//a7=hex2dec(a6)
//disp(a5)
p=ieeesingle2num(a6)
disp("Active Power(in W)=")
disp(p)
//end
close_serial(1)
endfunction
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