The File Extensions Database


.ACH File Extension

  • Developer by: Rockwell Automation, Inc.
  • Category: Various data Files

What is an .ACH file?

.ACH is RSLogix 5 project

The ach file extension is associated with the RSLogix 5, a software for Microsoft Windows operating system that alllows users to create programs for programmable controllers.

The ach file stores programming project.


How to open:

Use RSLogix 5 to open *.ach project files.

How to convert:

Compatible tools may be able to export *.ach files to other formats.

How to solve problems with ACH files

  • Associate the ACH file extension with the correct application. On :
    Windows: Right click on any ACH file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.ACH files". Mac: Right click (or Ctrl-click) the ACH file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .ACH is RSLogix 5 project. Because only the current version supports the latest ACH file format. Search, therefore, e.g. on the Rockwell Automation, Inc. manufacturer website after an available .ACH is RSLogix 5 project update.
  • To make sure that your ACH file is not corrupted or virus-infected, get the file again and scan it with antivirus software.