While the software is not publicly listed, Schneider Electric’s industrial support division sometimes retains archives for critical cases. If you have a valid support contract or are willing to pay a support fee, opening a ticket specifically requesting the legacy PL7-2 installation files may yield results. They may provide it under the condition that "no technical support is offered" for the software.
: PL7-2 is not available for free download from official Schneider Electric portals. It is considered a legacy/obsolete product that typically requires purchase through authorized distributors with proof of ownership. Telemecanique Pl7 2 Software Download
If your PLC is a TSX 37, you can use PL7 Pro (version 4.5 or 4.6). PL7 Pro runs on Windows XP/7 and is slightly easier to find. It can open most PL7-2 projects after a conversion step. While the software is not publicly listed, Schneider
software is a legacy DOS-based programming environment used for industrial automation. It was primarily designed to program and debug TSX Series 7 programmable logic controllers (PLCs), specifically the TSX 17-20 micro-PLC and early TSX 27/47 models. : PL7-2 is not available for free download