You will not find a legitimate, free download for CX Programmer 9.72 on Omron’s public website. Omron has moved to a "MyOmron" portal and now distributes CX-One (which includes CX Programmer) as a paid, licensed product.
Prior versions were heavily reliant on direct addressing (e.g., CIO 0.00 ). Version 9.72 improved the handling of Global and Local variables, making it much easier to write readable code that resembles the IEC 61131-3 standard. This is essential if you are transitioning to Structured Text programming.
You can request a 30-day trial or full version through the Omron Software Download Request Form . After submitting the form, you will receive a download link and a temporary license key via email.
You will find dozens of sketchy websites offering a “free CX-Programmer 9.72 full crack download.” Do not use them.