The history of MEDOC is a fascinating piece of industrial automation trivia. In its early days entering the global market, Mitsubishi Electric's programming software was strictly Japanese. To quickly provide a multi-language solution for international customers, Mitsubishi partnered with a Swedish company called Beijer Electronics. Beijer developed a powerful, flexible, and reliable programming environment, which Mitsubishi then licensed and distributed for free outside of Japan.
This is the 16-bit Windows-based successor to the DOS Medoc. It is often confused with its predecessor. To make it clearer, MELSEC MEDOC Plus is a newer, for MELSEC series PLCs, offering a more modern graphical interface. Users often ask for "Melsec Medoc plus 2.31a," which is a specific version of this Windows-based program. For this guide, we will primarily focus on the coveted 32-bit MEDOC 2.4 / 2.41 , as it represents the pinnacle of the classic, fast, keyboard-driven Medoc experience that so many engineers prefer.
Instead of struggling with a DOS utility, the superior approach is to use modern Windows-compatible software suites that explicitly support legacy file migration. 1. MELSOFT GX Developer melsec medoc 24 download better
Looking for a Melsec Medoc 2.4 Download? There’s a Better Way
This is the current industry-standard software for programming MELSEC FX, Q, and L series PLCs. While it cannot directly open MEDOC files, it can open projects saved by GX Developer. Therefore, the recommended migration path is: MEDOC → (Import) → GX Developer → (Save/Open) → GX Works2 The history of MEDOC is a fascinating piece
For a discontinued software, community-driven sources are your best bet. The following platforms have decades of discussion and shared resources:
It is a 16-bit DOS application, which won't run natively on 64-bit Windows. To make it clearer, MELSEC MEDOC Plus is
(Note: For the "Key Disk" prompt during installation or startup, you usually just need to point it to the folder where the key file resides in your mounted directory. No physical floppy required!)
, a legendary (and now very old) DOS-based programming software for Mitsubishi Electric PLCs , like the FX and A series.
Set up your dosbox.conf file to auto-mount your C:\MEDOC folder as the virtual C: drive.
While modern Mitsubishi software is more powerful, MEDOC 2.4 remains popular for several reasons: It runs on incredibly low system resources.