How to get data from CM12AU by PC?

[=?gb2312?q?Hem?= <nkjbin@xxxxxxx>]

I have these modules: MS13E, TM12, CM12, LM12 , 
and they work together perfectly. But now I want to 
know what did the CM12AU module send when the MS13E 
(motion detector) module detected some motion, how 
can I do that? I set the MS13E's address as 'c2'.

X10 protocol says that interface will send a '0x5a' 
before it begin sending datas, I should answer
a  '0xc3' to it and then it will upload datas.
But after I sent '0xc3', I can only receive data 
such as '0x5a, 0x02, 0x5a, 0x03' etc. However, I
should receive '0x5a, 0x03, 0x02, 0x2E, 0x22'.
I can't get it even I use interrupt mode.

What's wrong with it? Who can give me a hand? 
Thanks a lot!

Sincerely,
Hem 

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