Hi Will
I have just reciently written a LV5.1 program that waits for data from a Mitutoyo digital readout and displays it in consecutive
cells in an Excel 97 spreadsheet.
I have not used the MUX-10 but the adapter we used was the new IT-007R for connecting single devices to the PC's serial port. We
are eventually going to collect data of 2-axis's with 2 x IT-007R and two spare serial ports on the PC (The cost of 2 extra serial
ports is very cheap).
To access the serial port I used the VISA drivers.
With my program I interactively collect data and pass it to Excel. In your case, if you want to import to Matlab, I would save it
as a text tab delimited format using the array to spreadsheet function which can be imported. Another option, if you like using
Matlab scripts for number processing and have LV5.x, is the use the Matlab script node, which lets you execute Matlab code while
staying in LV. LV itself is has potent math capablities as an option.
I am attaching the code for my program, noting that it is LV5.1 for win95 and talks only to IT-007R's and uses COM2, but it
provides an example of communications using VISA's serial capabilities.
Hope this helps.
Tim
slade_w@my-deja.com wrote:
> Hello All, Being a LabVIEW and DAQ newbie, I am seeking as much advice as
> possible for my student project.
>
> I am attempting to receive positional data from 3 Mitutoyo Digimatic linear
> scales with digital readouts (DRO). The scales & DRO are common to most
> manual machine tools, i.e. lathes, milling machines, etc.
>
> The DROs translate the square-wave quadrature signals into a string of
> thirteen 4-bit numbers for each position. Apparently the multiplexer (model
> MUX-10 handles 3-input axes) further translates this into RS232-C data.
>
> My application would look at roughly 12 static (X,Y,Z) positions on the 3
> scales. The operator would push a button (keyboard, footswitch, or similar),
> and the position of the 3 axes would be logged as one position in space. The
> V.I. would prompt the operator for the next general position, and may also
> keep a running tally of the points collected.
>
> Questions: 1) I believe LabVIEW supports RS232 input, where do I access the
> relevant sub-VI or driver? (RTFM, right?). Also is the "C" appended to RS232-
> of any consequence?
>
> 2) Does anyone have exprience with the MUX-10 or similar devices. Are there
> cheaper off-the-shelf alternatives? (<$700)
>
> 3) Once the data is collected, where can one do the real number crunching?
> I'm looking to solve distance formulas and 3 equations for 3 unknowns, etc. I
> understand that the data can be sent to spreadsheets, but can it be exported
> to Matlab or Mathcad or...?
>
> Again, any advice is appreciated, I'm a babe in the woods here!
> Auf Deutsch oder English, wenn du willst....
> Thanks,
> Will Slade
> Student, Univ. of Minnesota, Mech. Eng.
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
