Overflow of memory with Yokogawa WT-110

[William Strijks]

Hi there,

After 240 sample we don't recieve any data from the Yokogawa powermeter WT-110.

At the YKWT200 Initialize.vi we get the following message: -1073807300
(Warning -1073807300 occurred at an unidentified location. Possible reasons: VISA: (Hex 0xBFFF003C) Insufficient system resources to perform necessary memory allocation.)

What do we wrong?


Software: Labview 6.1
Hardware: Yokogawa Powermeter WT110 connected over RS-232




TIA William

[Dennis_Knutson]

I don't understand what you're doing with that top set of VI with initialize serial port, the empty write, read, and VISA close. That shouldn't be there at all. You're causing a VISA Open and Close with every iteration. Your data flow for the instrument setups and reads should also be modified. Put the init and instrument setups outside the loop. There's no reason to do that every iteration of the loop either. You should also connect error in/error out of your instrument reads. No reason to try to do the reads in parallel since you can only send one request over the serial port at a time anyway. I can't save your VI as 6.1 right now so I attached a picture of what I think it should be modified.

[kargo]

Hey Dennis,

I noticed that you use the WT220 drivers in your VI for working with the WT110.  I'm using a WT210 and WT110 (since I don't have another 210) for my project.  But the WT110 has trouble initializing.  The WT210 works fine and I even installed the drivers for the WT110--but it still doesn't work.  I'm working in labview 2010.  Any thoughts?

I don't have a screenshot of it since my LabView is on a different computer with no internet.  But it's just a standard Initialize, Get Normal Measurement, Close.  But the WT110 gets stuck at the "Initialize" and times out.

Thanks,

Karen