Melsec Medoc 24 Download Repack Better

A user named KuroKage on a Japanese BBS discovered that MEDOC 24’s executable contained a hardcoded baud rate divisor. By patching bytes at offset 0x3A7F (from 0x03 for 9600 to 0x01 for 19200), the PLC could be tricked into double-speed communication. Result: Download time for a 4K program dropped from 4 minutes to 1:50.

MEDOC 2.4 was the peak of the software's development before Mitsubishi transitioned to Windows-based environments. It is preferred for: melsec medoc 24 download better

Note: MEDOC 24 cannot be “sped up” internally beyond 9600 baud – that is the PLC’s hardware limit. A user named KuroKage on a Japanese BBS

(like DOSBox) or a virtual machine running Windows 95/98. Without these, the software often fails to access the PC's COM ports, making it impossible to "talk" to the PLC. Conclusion MEDOC 2

| Tool | Target PLCs | Download Speed | Reliability | |------|-------------|----------------|--------------| | (via FX Configurator mode) | F, F1, F2 (limited) | 19200 baud | High (USB native) | | WindLDR (for F-series via third-party) | F, F1, FX0 | 9600 baud | Medium | | MEDOC to CSV → GX Works 2 conversion | Any | N/A (offline) | Highest |

The most common cause of a failed download is a mismatch in communication settings.