Posts Tagged ‘access’

Use Microsoft Office for Your Next Automation Project

Sunday, August 29th, 2010

Microsoft Office

Automate with Office

If a software development platform can call a DLL, it can be used to control the Expert I/O 1000. Microsoft Office with Visual Basic for Applications (VBA) is no exception.

For most people, Office would be the last tool they would consider for PC based automation, but in some cases it might be the best. For example, you could easily log data to an Excel spreadsheet or Access database as you collect it and once it’s in these applications, it’s simple to manipulate, plot and report the data.

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Understanding Expert I/O 1000 Access Times

Friday, August 14th, 2009

Expert I/O Timing

Expert I/O Timing

I often get questions about the Expert I/O 1000’s access time characteristics. The short answer is that you can change outputs at a rate of 100Hz and you can read inputs at 50Hz. However, the complete answer is more complicated.

When dealing with MS Windows on a PC, it’s not possible to get absolute realtime results. You will always have some variability in timing. However, Dajac’s USB implementation directly associates the timing to guaranteed values in the USB specification. Therefore, we know the guaranteed worst case access times at the USB level. (more…)

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