??? in VISA CONFIGURE SERIAL PORT->__.vi

[Tony Kateryniuk]

I have developed some labview software in LV 6.0.2 to control a series of servo motors that respond to ASCII stringes sent to them over a RS-232 network. For trouble shooting purposes I created a little vi that writes selected strings to the network, all worked well in the Lab (on a new and powerfull PC) but when I took it out to integrate it on the (old PC, P133) it now returns the error in the header of this question. The Visa Run-time, and the serpdrv issues have seemingly been dealt with. As well the servo motor proprietary software for control works well thru the same port on the PC that I am trying to use with Labview confirming proper hardware installation.

-Any Suggestions?

[Rob Cole]

Due to the many different VISA drivers out there, I abandoned VISA for talking to serial ports a while ago. I might suggest that you try the serial compatibility VIs and see how they do. I know from experience that if HP VISA was once loaded on the machine, then LabVIEW VISA drivers will not see the serial ports, even if you load NI VISA after the HP VISA (thus messing up anything the HP VISA was talking to). Manually editting the registry is required to get rid of all traces of the HP VISA, then load the NI VISA.

Anyway, also check the serial ports on both machines to ensure that they are using the same I/O address and IRQ.

Have fun getting it working.

Rob

[Tony Kateryniuk]

Rob, at the suggestion of NI Application Engineer's I have loaded 6i on the shop floor PC, After doing this the VI started to work, confusing? Thanx for your help