Thanks Juergen for your advice.
I used Pinnacle 52 as a simulator and debugger.
I move XRL to ORL and ANL but result didn't change.
In my code I use a part of code from AT89S8252 Primer (p.3), but there aren’t examples in this article how to load DPTR1, use DP1L and DP1H.
I have another problem: how to write DPTR1's LSB use only DP1L?

Can anybody council me where I can read about my problem?

Thanks to all.