Hello,
now, I am seeing correctly the two columns because I have opened it with Notepad instead of Internet Explorer.
Well, I think your answer resides on the LV Help, precisely in the AI Read help.
read/search position defines where you want to read from the acquisition buffer. For conditional retrievals, read/search position specifies where to begin the search in the acquisition buffer. The VI adds read offset scans to the mark specified by position to determine the starting point for the read. You express read offset in scans. The read offset parameter can be negative. The default setting and input is 0.
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position indicates which input buffer reference mark is the read reference point. This reference can be the read mark, the beginning of the buffer, or the most recently acquired data (end of data). Initially, the read mark points to the beginning of the acquisition buffer. As you retrieve data from the buffer using this VI, LabVIEW increments the read mark to point to the next block of data to be read.
| 0 |
Do not change the position setting (default input). |
| 1 |
Relative to the read mark (default setting). |
| 2 |
Relative to the start of buffer. |
| 3 |
Relative to the end of data. |
| 4 |
Relative to the trigger point. This mode is valid only when the buffer completes. | |
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read offset—The VI adds read offset scans to the mark specified by position to determine the starting point for the read. Refer to the description of the AI Buffer Read VI for more information.
What happens if you don't cable any input to read/search position input parameter ( relative to read mark and 0 )? I think you shouldn't have any problems and it is the normal usage.
regards,
crisR
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