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We appreciate your patience as we improve our online experience.
10-08-2014 12:16 PM - edited 10-08-2014 12:23 PM
Hi
Iam using NI PXIe 8135 RT controller.This error has been popping up everytime.
Property Node (arg 1) in VISA Configure Serial Port (Instr).vi
Error -1073807246
Possible reason(s):
VISA: (Hex 0xBFFF0072) The resource is valid, but VISA cannot currently access it.
We made a new real time project and ran a sample program of basic serial write and read. The visa configure serial port function is outputting this error in error out indicator. We are sure other services(putty, hyperterminal, com port toolkit) are not accessing the controller comport.We are stuck at this error for quite few days.
Regards
EKANTH
10-08-2014 12:36 PM - edited 10-08-2014 12:41 PM
Hi - under which target is your VI that is addressing the Serial port? It sounds like you're attempting to use the Serial port on the PXIe 8135 RT, but you mention putty, hyperterminal, etc which are windows programs. Try the following:
Also make sure you don't have any RTEXEs already running on the PXIe-8135 RT. Aborting an RTEXE that has the VISA resource open could stop the RTEXE but not release the COM port.
07-18-2017 07:02 AM
Hello all,
same problem here with NI USB-6343;
Error opening resource:
ASRL30::INSTR
VISA: (Hex 0xBFFF0072) The resource is valid, but VISA cannot currently access it.
Works with laptop but not with this IEI touch panel pc.
07-19-2017 12:45 PM
In your NI-Max window, the device is actually listed two devices down from where you have highlighted. Why not use that?
07-20-2017 01:58 AM
There are multiple USB devices which are connected to pc via MOXA uPort 407 and TestStand is running several vi's in sequence testing 15 targets. After testing targets with two vi's COM30 cannot be accessed with this pc but with HP Elitebook 840 it's accessible.