@beto
thanks again
i did it as you said
now the response is:

0=ÿ
1=B
2=C
3=D
4=E
5=F
6=G
7=H
8=I
9=J
10=K
11=L
12=M
13=N
14=P
15=R
16=S
17=T
18=U
19=V
20=

i can see first address but not correct value