Stanford Research SR810 lock-in does not respond RS-232

I am trying use RS-232 connection interface for communicate with Labview and  Stanford Research SR810.

The error:

Error -1073807346 occurred at VISA Write in Stanford Research 830.lvlib:Query Standard Event Status.vi->Stanford Research 830.lvlib:Error Query.vi->Stanford Research 830.lvlib:Configure Input Signal.vi->Stanford Research 830 Acquire Measurement - ulvac.vi

Can you help me?