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How to capture error code&65311&65311&65311

Question asked by Lee.Sun on Jan 7, 2009
Latest reply on Jan 8, 2009 by odanzy
hi all,
Recently, I am programming on the control of RF via LAN(VISA COM).
My program is the work of most of the time. But, sometime, she break.
the error code is :
E_VISA_TMO 0x80040015 -2147221483 "The operation terminated due to a timeout."

But I do not know when the operation timeout , and why?
I want to catch the error, and how to catch it in programming?
Or can I increase timeout? and how to increate it?