← Verified Knowledge Base Source checked

GX WORKS3 • FX5U / GX WORKS3

How do I avoid losing FX5U device comments?

Treat comments and labels as project data: include them in the applicable read/write operation and keep the dated GX Works3 project backup with the machine documentation.

Practical explanation

A ladder without meaningful comments is much harder to troubleshoot safely.

Not every online controller contains every piece of offline engineering information, so the master project remains important.

Check in this order

  1. 1Read available comments with the program backup.
  2. 2Use functional descriptions such as 'Clamp extend command'.
  3. 3Store the verified master project with revision history.

Last reviewed: 2 October 2026

Official source: GX Works3 Operating Manual

Related verified answers

How do I connect GX Works3 directly to an FX5U by Ethernet?How do I connect GX Works3 to an FX5U through a network switch?Should I read the PLC program before making an FX5U change?

Still need help with your machine?

Ask a real question in the community and include the PLC model, software version, error and what you already checked.

Ask the community