Visa "restart".

Hello

I wrote a RESP VI an EXE for PowerSupply PL303.-p control. It is connected to the host through the USB acts as a serial an interface, that's why I use VISA for read and write operations. I work with LabView 2010 professional development system, Windows 7.

Normally the VI works as follows:

-l' power is turned on, then the VI is launched

-the VI detects the device and it controls

-l' user turns off the device, the VI brings an error and stops. It must be closed.

-to 'reconnect' the unit, the user must turn on the device, restart the VI and continue the work after the VI has located the device.

The user ask me if it is possible to switch turned off-turned on the device while the VI is still running and reconnect the device without stop the VI.

I tried to simulate this location through terminal VISA of up here again, I have to close the terminal (current VISA session) and open a new one.

Is it possible to close a session VISA deactivation (e.g. breakdown) and restart a new?

Someone trying to do such a thing, or it is not possible in principle?

Best regartds and thanks in advance

First of all, you should take a look at the Guide of Style of LabVIEW. To be frank, your code is a mess. Son is going everywhere, elbows, stuff above the other elements and the local variables used throughout. This is just to name a few items that can be cleaned. Secondly, why do you have two entries for the name of the resource? You use actually two different devices? This code is a state machine as I suggested. In addition, using serial communication? You had already mentioned USB. If you only use USB there is no reason to call the init series.

Here's something more in line with what I was talking about.

You can also watch the State JKI machine for a more robust state machine framewaork.

Tags: NI Software

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