Error -1074395995 on Functions IMAQ ReadFile VI and IMAQ Write File 2

Updated Apr 5, 2023

Reported In

Hardware

  • myRIO Student Embedded Device

Software

  • LabVIEW Real-Time Module

Operating System

  • NI Linux Real-Time

Issue Details

I developed a LabVIEW VI that reads an image from a file and then implements an image processing algorithm. The VI works fine on my Windows PC. However, when I copied it on myRIO or Real Time target, the IMAQ Read/IMAQ Write File 2 File outputs error (-1074395995) and the VI doesn't run correctly.

Error -1074395995 occurred at an unidentified location
Possible reason(s):
File not found.



Why am I getting this error? 

Solution

File paths and structure vary somewhat depending on the target operating system.

On NI Linux Real-Time targets, the root file path is / and forward slashes serve as delimiters between directories. NI Linux Real-Time targets do not have a C drive. However, for convenience, the directories /c and /c/ni-rt exist, and /c/ni-rt/startup redirects to /home/lvuser/natinst/bin which is the recommended path for startup applications on NI Linux Real-Time targets.
Therefore, your IMAQ Read File/IMAQ-Write-File-2 should have a path similar to the below:
/home/lvuser/xxx.jpg

This document discusses recommended LabVIEW coding practices for designating file paths so that an application can be moved seamlessly from target to target.

Related Links

Unable to Access the Remote File Browser on my cRIO

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