GPIB not responding after running fine in vb6 app.

[Ibmer]

Hello, I am writing a program using vb6 and gpib interfacing an hp4142 voltage source/monitor and a keithly 707 matrix. The Program runs fine for a while and then ibspy shows EDVR(0) on all the commands. It is almost like the board is timing out. I access the instruments using ibdev.

[DiegoF]

Hi,

EDRV refers to a low-level driver error. Usually the driver cannot get a hold of some system resource. A system call failed. The OS-specific error code is placed in ibcnt.

GPIB Error Codes and Common Solutions (Part 1)

Also, make sure to call ibonl (ud,0) to close any open handles that are not used.

Hope this helps.

DiegoF
National Instruments.