MEDOC is often better at handling the specific timing required by older RS-232/RS-422 serial converters.
Supports basic and applied instructions for the FX and A-series.
Do you have the or a USB-to-Serial adapter ready to test the connection?
Since MEDOC is a DOS-based application, it will not run natively on Windows 10 or 11 (64-bit). To get it working, you have two main options:
It can run on incredibly old hardware, making it a "fail-safe" for onsite maintenance. Finding a Safe Download
Communities like PLCTalk or MrPLC are excellent resources. While they don't host illegal files, members can often guide you to the specific Mitsubishi regional site that still hosts the legacy installer. How to Run MEDOC 24 on Modern Windows
MELSEC MEDOC (often referred to as MEDOC) was the industry standard for Mitsubishi PLC programming before the transition to Windows-based environments like GX Developer or GX Works. It is a robust, keyboard-driven interface that allows for ladder logic programming, monitoring, and diagnostics.
Even though Mitsubishi has modernized its software suite, MEDOC remains essential for: