BTW Here is the XML export from NI I/O Trace utility of one pass through the loop:
<call type=”NI-488.2″ description=”iblines” process=”0x000017F4″ thread=”0x00006D90″>
<status type=”success” code=”0x00000164″ name=”CMPL REM CIC LACS”>Operation completed successfully.</status>
<input time=”13:19:37.6771″>
<parameter name=”Board Name”>GPIB0</parameter>
<parameter name=”ud”>31000</parameter>
<parameter name=”&controlLines”>0x5036FBE4</parameter>
</input>
<output time=”13:19:37.6771″>
<parameter name=”iberr”>0</parameter>
<parameter name=”ibcntl”>0 (0x0)</parameter>
<parameter name=”controlLines”>-1</parameter>
</output>
</call>
<call type=”NI-488.2″ description=”ibwait” process=”0x000017F4″ thread=”0x00006D90″>
<status type=”success” code=”0x00000164″ name=”CMPL REM CIC LACS”>Operation completed successfully.</status>
<input time=”13:19:37.6771″>
<parameter name=”Brd/Dev Name”>GPIB0</parameter>
<parameter name=”ud”>31000</parameter>
<parameter name=”mask”>0x0000</parameter>
</input>
<output time=”13:19:37.6781″>
<parameter name=”iberr”>0</parameter>
<parameter name=”ibcntl”>0 (0x0)</parameter>
</output>
</call>
<call type=”NI-488.2″ description=”ThreadIbsta” process=”0x000017F4″ thread=”0x00006D90″>
<status type=”success” code=”0x00000164″ name=”CMPL REM CIC LACS”>Operation completed successfully.</status>
<input time=”13:19:37.6781″ />
<output time=”13:19:37.6781″>
<parameter name=”iberr”>0</parameter>
<parameter name=”ibcntl”>0 (0x0)</parameter>
<parameter name=”Thread ibsta”>0x0164</parameter>
</output>
</call>
