Inability to Write/Read Using VISA to Control a Model 44 Harvard Apparatus Syringe Pump

[Jess23]

Thanks!  I figured out the return characters.  I was using \n.  Using \r the Read Write works well.

On another note..

Has anyone used Harvard drivers with a (really) old version of LabView?  I have LabView 7.1.  The Harvard drivers on the website are for versions 8.0 and up.  I have some old Harvard drivers, however I havent been able to get them to work.  It appears they are having trouble with the DAQ interface (which is also ancient in my system).  I get the error: "Enque Element in DAQ interface.vi"  When I try to write simple code to through the PhD read set parameters.  

I have a bunch of old software and equipment that I'm trying to get back up and running, but all the people that set up this system have left.  Sorry- I don't know where I got the Harvard drivers that I have.  Also, they are not in the inst.lib folder of LabView, so I think they are more like separate VIs than the plug and play that NI has now for the Harvard pumps. 

Thanks for listening!

[Albert.Geven]

Why should yuo use daq. Use VISA that is available in 7 so don't bother the DAQ.

You did not by accident use the daq wizard is it?

the problem with visa: there is not a good wizard, there was an example but too many different instruments make that also too difficult for a beginner and too clumsy for a professional.

So try to redraw what you see in 8 or ask a "save for previous" on the website.